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Journal articles on the topic 'Decadale trends'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Nissanka, Nuwanthi, Erandathie Lokupitiya, and Shiromani Jayawardena. "Trends in climate change observed under tropical wet and tropical montane climates; A case study from Sri Lanka." MAUSAM 74, no. 3 (2023): 579–92. http://dx.doi.org/10.54302/mausam.v74i3.5993.

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Climate change-related changes in temperature and precipitation trends must be investigated at local, regional and global levels. Temperature and precipitation trends in two selected regions having tropical wet and tropical montane climates (i.e., Colombo and Nuwara Eliya respectively) in Sri Lanka were studied for a 30 year period from 1989 to 2019, to evaluate the temporal dynamics of climate change. Precipitation trends were analyzed on annual, monthly, and seasonal scales, while the trends in mean, minimum, and maximum temperatures were examined on annual and monthly scales. Decadal time s

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2

Johnson, Gregory C., John M. Lyman, and Sarah G. Purkey. "Informing Deep Argo Array Design Using Argo and Full-Depth Hydrographic Section Data." Journal of Atmospheric and Oceanic Technology 32, no. 11 (2015): 2187–98. http://dx.doi.org/10.1175/jtech-d-15-0139.1.

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AbstractData from full-depth closely sampled hydrographic sections and Argo floats are analyzed to inform the design of a future Deep Argo array. Here standard errors of local decadal temperature trends and global decadal trends of ocean heat content and thermosteric sea level anomalies integrated from 2000 to 6000 dbar are estimated for a hypothetical 5° latitude × 5° longitude × 15-day cycle Deep Argo array. These estimates are made using temperature variances from closely spaced full-depth CTD profiles taken during hydrographic sections. The temperature data along each section are high pass

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3

SUDEVAN, S., N. T. NIYAS, K. SANTHOSH, and RAMESH CHAND. "Study on hourly temperature features over Mumbai, Thiruvananthapuram and Minicoy during 1969-2012." MAUSAM 67, no. 3 (2021): 633–50. http://dx.doi.org/10.54302/mausam.v67i3.1382.

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Amongst all the climatic elements, temperature plays a major role in detecting and analyzing climatic change and its impact. The variability in resident time of the surface temperature is studied to investigate whether any change in temperature has taken place. Analysis of the results is presented for Mumbai, a mega city with large change in land-use pattern, Thiruvananthapuram, a semi-urban city with moderate changes in land-use pattern and Minicoy, an Island city without much change in land-use pattern. These three places representing varying geographical locations and climatic conditions ar

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4

Al-Taisan, Wafa’a A. "A Remote Sensing Approach for Displaying the Changes in the Vegetation Cover at Az Zakhnuniyah Island at Arabian Gulf, Saudi Arabia." Scientifica 2022 (March 17, 2022): 1–14. http://dx.doi.org/10.1155/2022/2907921.

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In the terrestrial ecosystem, vegetation is the important component of exchanging of water and energy in biogeochemical and climate cycle. A study was conducted to detect the vegetation cover change at Az Zakhnuniyah island by using remote sensing techniques. It includes vegetation analysis using normalized difference vegetation index (NDVI) while comparing with climatological data including temperature, humidity, and precipitation. A clear trend was seen in climatological parameters where temperature and humidity were rising decade by decade although NDVI did not show. In addition, increasing

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5

Yela, Margarita, Manuel Gil-Ojeda, Mónica Navarro-Comas, et al. "Hemispheric asymmetry in stratospheric NO<sub>2</sub> trends." Atmospheric Chemistry and Physics 17, no. 21 (2017): 13373–89. http://dx.doi.org/10.5194/acp-17-13373-2017.

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Abstract. Over 20 years of stratospheric NO2 vertical column density (VCD) data from ground-based zenith DOAS spectrometers were used for trend analysis, specifically, via multiple linear regression. Spectrometers from the Network for the Detection of Atmospheric Composition Change (NDACC) cover the subtropical latitudes in the Northern Hemisphere (Izaña, 28° N), the southern Subantarctic (Ushuaia, 55° S) and Antarctica (Marambio, 64° S, and Belgrano, 78° S). The results show that for the period 1993–2014, a mean positive decadal trend of +8.7 % was found in the subtropical Northern Hemisphere

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6

Omopekunola, Moses Oluoke, Abel Jacob, Ahmed Abubakar, and Augustina Achimugu. "An Assessment of Rainfall Variability and Trends in Wukari, Nigeria from 1981 to 2021." African Multidisciplinary Journal of Sciences and Artificial Intelligence 2, no. 2 (2025): 280–97. https://doi.org/10.58578/amjsai.v2i2.5402.

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This study assessed the trends and variability of rainfall in Wukari, Nigeria, from 1981 to 2021, using the ECMWF ERA5 reanalysis data sets. Rainfall trends and variations over the study period were analyzed using Mann Kendal trend test and the Theil Sen slope estimator. The assessment of monthly rainfall variation for the rainy months (May-October) showed an increasing trend for August, September, and October, with August having the highest increasing trend of magnitude 0.051 mmmonth-1. The result also showed an encroachment of the dry spell towards the rainy season and vice versa. This will

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7

Li, Gen, Baohua Ren, Jianqiu Zheng, and Chengyun Yang. "Trend Singular Value Decomposition Analysis and Its Application to the Global Ocean Surface Latent Heat Flux and SST Anomalies." Journal of Climate 24, no. 12 (2011): 2931–48. http://dx.doi.org/10.1175/2010jcli3743.1.

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Abstract Given the complexity of trends in the actual climate system, distinguishing between different trends and different trend modes is important for climate research. This study introduces a new method called “trend singular value decomposition (TSVD) analysis,” which is designed for systematically extracting coupled trend modes, albeit small, by performing an eigenanalysis of the inverse-rank covariance matrix between two fields. Applications to simple time series models and annual mean surface latent heat flux (LHF) and SST data for 1958–2006 are presented and discussed. Results show tha

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Bernhard, Germar, and Scott Stierle. "Trends of UV Radiation in Antarctica." Atmosphere 11, no. 8 (2020): 795. http://dx.doi.org/10.3390/atmos11080795.

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The success of the Montreal Protocol in curbing increases in harmful solar ultraviolet (UV) radiation at the Earth’s surface has recently been demonstrated. This study also provided evidence that the UV Index (UVI) measured by SUV-100 spectroradiometers at three Antarctic sites (South Pole, Arrival Heights, and Palmer Station) is now decreasing. For example, a significant (95% confidence level) downward trend of −5.5% per decade was reported at Arrival Heights for summer (December through February). However, it was also noted that these measurements are potentially affected by long-term drifts

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9

Worden, H. M., M. N. Deeter, C. Frankenberg, et al. "Decadal record of satellite carbon monoxide observations." Atmospheric Chemistry and Physics Discussions 12, no. 9 (2012): 25703–41. http://dx.doi.org/10.5194/acpd-12-25703-2012.

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Abstract. Atmospheric carbon monoxide (CO) distributions are controlled by anthropogenic emissions, biomass burning, transport and oxidation by reaction with the hydroxyl radical (OH). Quantifying trends in CO is therefore important for understanding changes related to all of these contributions. Here we present a comprehensive record of satellite observations from 2000 through 2011 of total column CO using the available measurements from nadir-viewing thermal infrared instruments: MOPITT, AIRS, TES and IASI. We examine trends for CO in the Northern and Southern Hemispheres along with regional

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10

Worden, H. M., M. N. Deeter, C. Frankenberg, et al. "Decadal record of satellite carbon monoxide observations." Atmospheric Chemistry and Physics 13, no. 2 (2013): 837–50. http://dx.doi.org/10.5194/acp-13-837-2013.

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Abstract. Atmospheric carbon monoxide (CO) distributions are controlled by anthropogenic emissions, biomass burning, transport and oxidation by reaction with the hydroxyl radical (OH). Quantifying trends in CO is therefore important for understanding changes related to all of these contributions. Here we present a comprehensive record of satellite observations from 2000 through 2011 of total column CO using the available measurements from nadir-viewing thermal infrared instruments: MOPITT, AIRS, TES and IASI. We examine trends for CO in the Northern and Southern Hemispheres along with regional

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11

DelSole, Timothy, Michael K. Tippett, and Jagadish Shukla. "A Significant Component of Unforced Multidecadal Variability in the Recent Acceleration of Global Warming." Journal of Climate 24, no. 3 (2011): 909–26. http://dx.doi.org/10.1175/2010jcli3659.1.

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Abstract The problem of separating variations due to natural and anthropogenic forcing from those due to unforced internal dynamics during the twentieth century is addressed using state-of-the-art climate simulations and observations. An unforced internal component that varies on multidecadal time scales is identified by a new statistical method that maximizes integral time scale. This component, called the internal multidecadal pattern (IMP), is stochastic and hence does not contribute to trends on long time scales; however, it can contribute significantly to short-term trends. Observational

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12

Hannaford, J., G. Buys, K. Stahl, and L. M. Tallaksen. "The influence of decadal-scale variability on trends in long European streamflow records." Hydrology and Earth System Sciences 17, no. 7 (2013): 2717–33. http://dx.doi.org/10.5194/hess-17-2717-2013.

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Abstract. This study seeks to provide a long-term context for the growing number of trend analyses which have been applied to river flows in Europe. Most studies apply trend tests to fixed periods, in relatively short (generally 1960s–present) records. This study adopts an alternative "multi-temporal" approach, whereby trends are fitted to every possible combination of start and end years in a record. The method is applied to 132 catchments with long (1932–2004) hydrometric records from northern and central Europe, which were chosen as they are minimally anthropogenically influenced and have g

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Hannaford, J., G. Buys, K. Stahl, and L. M. Tallaksen. "The influence of decadal-scale variability on trends in long European streamflow records." Hydrology and Earth System Sciences Discussions 10, no. 2 (2013): 1859–96. http://dx.doi.org/10.5194/hessd-10-1859-2013.

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Abstract. This study seeks to provide a long-term context for the growing number of trend analyses which have been applied to river flows in Europe. Most studies apply trend tests to fixed periods, in relatively short (generally 1960s–present) records. This study adopts an alternative "multi-temporal" approach, whereby trends are fitted to every possible combination of start and end years in a record. The method is applied to 132 catchments with long (1932–2004) hydrometric records from northern and central Europe, which were chosen as they are minimally anthropogenically influenced and have g

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14

Karno, Kumar Mondal, A. E. Akhter Md., and Nazrul Islam Md. "TRENDS OF TEMPERATURE AT HIGH- AND LOW-DENSELY POPULATED DIVISIONS IN BANGLADESH." TRENDS OF TEMPERATURE AT HIGH- AND LOW-DENSELY POPULATED DIVISIONS IN BANGLADESH 3, no. 1 (2018): 1–8. https://doi.org/10.5281/zenodo.4485202.

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The present study is carried out to determine the trends in changes in temperature at Dhaka and Khulna divisions in Bangladesh using non parametric Mann-Kendall test for the period 1960-2015. Temperature is considered as one of the most important climatic variables in terms of climate change. Results show increasing trends in all monsoon seasons (pre-monsoon, monsoon and post monsoon season) for both divisions. Highest increasing rate is found in post monsoon season at Dhaka division with Sen’s slope estimate 0.27 ºC/decade which is statistically significant at 99% level. Winter sea

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15

Bourassa, A. E., D. A. Degenstein, W. J. Randel, et al. "Trends in stratospheric ozone derived from merged SAGE II and Odin-OSIRIS satellite observations." Atmospheric Chemistry and Physics Discussions 14, no. 6 (2014): 7113–40. http://dx.doi.org/10.5194/acpd-14-7113-2014.

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Abstract. Stratospheric ozone profile measurements from the Stratospheric Aerosol and Gas Experiment (SAGE) II satellite instrument (1984–2005) are combined with those from the Optical Spectrograph and InfraRed Imager System (OSIRIS) instrument on the Odin satellite (2001–Present) to quantify interannual variability and decadal trends in stratospheric ozone between 60° S and 60° N. These data are merged into a multi-instrument, long-term stratospheric ozone record (1984–present) by analyzing the measurements during the overlap period of 2002–2005 when both satellite instruments were operationa

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Bourassa, A. E., D. A. Degenstein, W. J. Randel, et al. "Trends in stratospheric ozone derived from merged SAGE II and Odin-OSIRIS satellite observations." Atmospheric Chemistry and Physics 14, no. 13 (2014): 6983–94. http://dx.doi.org/10.5194/acp-14-6983-2014.

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Abstract. Stratospheric ozone profile measurements from the Stratospheric Aerosol and Gas Experiment~(SAGE) II satellite instrument (1984–2005) are combined with those from the Optical Spectrograph and InfraRed Imager System (OSIRIS) instrument on the Odin satellite (2001–Present) to quantify interannual variability and decadal trends in stratospheric ozone between 60° S and 60° N. These data are merged into a multi-instrument, long-term stratospheric ozone record (1984–present) by analyzing the measurements during the overlap period of 2002–2005 when both satellite instruments were operationa

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17

Bootsma, A., D. W. McKenney, D. Anderson, and P. Papadopol. "A re-evaluation of crop heat units in the maritime provinces of Canada." Canadian Journal of Plant Science 87, no. 2 (2007): 281–87. http://dx.doi.org/10.4141/p06-140.

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Crop heat units (CHU) are commonly used to rate suitability of corn (Zea mays L.) hybrids and soybean [Glycine max (L.) Merrill] varieties for production in various regions of Canada. The CHU map presently in use for the Maritime provinces is based on climate data from the period 1956 to 1985. This paper presents an updated CHU map for the region using the latest available climate normals (1971 to 2000) and up-to-date interpolation and mapping procedures. Decadal time trends of CHU and water deficits are also examined for seven selected climate stations in the region. Average CHU ratings often

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18

Gebhardt, C., A. Rozanov, R. Hommel, et al. "Stratospheric ozone trends and variability as seen by SCIAMACHY from 2002 to 2012." Atmospheric Chemistry and Physics 14, no. 2 (2014): 831–46. http://dx.doi.org/10.5194/acp-14-831-2014.

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Abstract. Vertical profiles of the rate of linear change (trend) in the altitude range 15–50 km are determined from decadal O3 time series obtained from SCIAMACHY1/ENVISAT2 measurements in limb-viewing geometry. The trends are calculated by using a multivariate linear regression. Seasonal variations, the quasi-biennial oscillation, signatures of the solar cycle and the El Niño–Southern Oscillation are accounted for in the regression. The time range of trend calculation is August 2002–April 2012. A focus for analysis are the zonal bands of 20° N–20° S (tropics), 60–50° N, and 50–60° S (midlatit

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19

RAJI PUSHPALATHA, GOVINDAN KUTTY, and BYJU GANGADHARAN. "Sensitivity analysis of WOFOST for yield simulation of cassava over the major growing areas of India." Journal of Agrometeorology 23, no. 4 (2021): 375–80. http://dx.doi.org/10.54386/jam.v23i4.140.

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A study was conducted to assess the meteorological sensitivity of the WOFOST crop model in simulating the yield of cassava. The sensitivity was designed by changing the present meteorological data by ±1 to ±5 %. The results has shown the minimum temperature influencing the yield of cassava (variation: 4.94 to -7.65 %) followed by the maximum temperature (yield variation: 6.39 to -6.03 %) and solar radiation (yield variation: -2.41 to 2.07 %). The trends of these meteorological variables have been further analyzed over the major cassava growing regions in India to link its variations with cassa

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20

Ahamad, Fatimah, Paul T. Griffiths, Mohd Talib Latif, Liew Juneng, and Chung Jing Xiang. "Ozone Trends from Two Decades of Ground Level Observation in Malaysia." Atmosphere 11, no. 7 (2020): 755. http://dx.doi.org/10.3390/atmos11070755.

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We examine the change in surface ozone and its precursor behavior over 20 years at four locations in western Peninsular Malaysia which have undergone urban-commercial development. Trend and correlation analyses were carried out on ozone and oxides of nitrogen observation data over the periods of 1997–2016 as well as the decadal intervals of 1997–2006 and 2007–2016. Diurnal variation composites for decadal intervals were also plotted. Significant increasing ozone concentrations were observed at all locations for the 20-year period, with a range between 0.09 and 0.21 ppb yr−1. The most urbanized

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21

Mahmud, Khalid, Susmita Saha, Tanvir Ahmad, and Ummay Saima Satu. "Historical trends and variability of temperature extremes in two climate vulnerable regions of Bangladesh." Journal of the Bangladesh Agricultural University 16, no. 2 (2018): 283–92. http://dx.doi.org/10.3329/jbau.v16i2.37984.

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Research on temperature extremes deserves more importance because it reacts sensitively to climate change. As elsewhere across the world, Bangladesh has already become a victim of temperature extremes. Hence, this study was conducted to assess the trends and variability of 11 temperature-related extreme indices based on daily maximum (TX) and daily minimum (TN) temperature recorded at Rajshahi and Barisal over the period 1976–2015. The indices were calculated on annual basis and their average annual and decadal trends were evaluated by non-parametric Mann-Kendall test and Sen’s slope estimate.

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22

Hernández Ayala, José J., and Rafael Méndez-Tejeda. "Increasing frequency in off-season tropical cyclones and its relation to climate variability and change." Weather and Climate Dynamics 1, no. 2 (2020): 745–57. http://dx.doi.org/10.5194/wcd-1-745-2020.

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Abstract. This article analyzes the relationship between off-season tropical cyclone (TC) frequency and climate variability and change for the Pacific Ocean and Atlantic Ocean basins. TC track data were used to extract the off-season storms for the 1900–2019 period. TC counts were aggregated by decade, and the number of storms for the first 6 decades (presatellite era) was adjusted. Mann–Kendall nonparametric tests were used to identify trends in decadal TC counts and multiple linear regression (MLR) models were used to test if climatic variability or climate change factors explained the trend

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Bieniek, Peter A., John E. Walsh, Richard L. Thoman, and Uma S. Bhatt. "Using Climate Divisions to Analyze Variations and Trends in Alaska Temperature and Precipitation." Journal of Climate 27, no. 8 (2014): 2800–2818. http://dx.doi.org/10.1175/jcli-d-13-00342.1.

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Abstract By extending the record of Alaskan divisional temperature and precipitation back in time, regional variations and trends of temperature and precipitation over 1920–2012 are documented. The use of the divisional framework highlights the greater spatial coherence of temperature variations relative to precipitation variations. The divisional time series of temperature are characterized by large interannual variability superimposed upon low-frequency variability, as well as by an underlying trend. Low-frequency variability corresponding to the Pacific decadal oscillation (PDO) includes Al

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Wankhede, Sachin Yadavrao, Ramkrushna Gandhiji Idapuganti, Ulhas Vyankatrao Galkate, and Yenumula Gerard Prasad. "Decadal Trend Analysis of Maximum Temperature at Nagpur District of Maharashtra, India." Journal of Scientific Research and Reports 31, no. 4 (2025): 360–78. https://doi.org/10.9734/jsrr/2025/v31i42957.

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An attempt was made for decadal trend analysis of maximum temperature for monthly, seasonal and annual time series over a period of 1985 to 2024 using the Mann-Kendall Test and Sen’s Slope Estimator method at Nagpur district of Maharashtra. The annual trend in maximum temperatures from 1985 to 2024 showed non-significant increase of 0.004°C. Significant increase of maximum temperature was observed during Northeast monsoon season at 90% confidence level, with a rise of 0.025°C. Winter and summer temperatures exhibit minor, non-significant decreases. Among the months, November showed significant

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Royston, Sam, Rory J. Bingham, and Jonathan L. Bamber. "Attributing decadal climate variability in coastal sea-level trends." Ocean Science 18, no. 4 (2022): 1093–107. http://dx.doi.org/10.5194/os-18-1093-2022.

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Abstract. Decadal sea-level variability masks longer-term changes due to natural and anthropogenic drivers in short-duration records and increases uncertainty in trend and acceleration estimates. When making regional coastal management and adaptation decisions, it is important to understand the drivers of these changes to account for periods of reduced or enhanced sea-level change. The variance in decadal sea-level trends about the global mean is quantified and mapped around the global coastlines of the Atlantic, Pacific, and Indian oceans from historical CMIP6 runs and a high-resolution ocean

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Himanshushekhar Chaurasia and Sundaramoorthy Chandrasekaran. "Trends in the Growth and Development in the Cotton Sector." Agricultural Engineering Today 49, no. 2 (2025): 59–60. https://doi.org/10.52151/aet2025492.1844.

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Trends in Fibre Production and Trade The historical trend of India’s cotton production demonstrates remarkable growth, rising from approximately 33.4 lakh bales in 1950-51 to over 320 lakh bales in 2023-24. This increase is attributed to advancements in farming techniques, the adoption of hybrid seeds, and supportive government policies. The most significant growth occurred after the year 2000, following the introduction of Bt cotton. Similarly, productivity has also increased, surpassing 500 kg/ha in the last decade, with a decadal average of around 440 kg/ ha. However, production trends have

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Karabil, Sitar, Eduardo Zorita, and Birgit Hünicke. "Mechanisms of variability in decadal sea-level trends in the Baltic Sea over the 20th century." Earth System Dynamics 8, no. 4 (2017): 1031–46. http://dx.doi.org/10.5194/esd-8-1031-2017.

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Abstract. Coastal sea-level trends in the Baltic Sea display decadal-scale variations around a long-term centennial trend. In this study, we analyse the spatial and temporal characteristics of the decadal trend variations and investigate the links between coastal sea-level trends and atmospheric forcing on a decadal timescale. For this analysis, we use monthly means of sea-level and climatic data sets. The sea-level data set is composed of long tide gauge records and gridded sea surface height (SSH) reconstructions. Climatic data sets are composed of sea-level pressure, air temperature, precip

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Davis, Sean M., Nicholas Davis, Robert W. Portmann, Eric Ray, and Karen Rosenlof. "The role of tropical upwelling in explaining discrepancies between recent modeled and observed lower-stratospheric ozone trends." Atmospheric Chemistry and Physics 23, no. 5 (2023): 3347–61. http://dx.doi.org/10.5194/acp-23-3347-2023.

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Abstract. Several analyses of satellite-based ozone measurements have reported that lower-stratospheric ozone has declined since the late 1990s. In contrast to this, lower-stratospheric ozone was found to be increasing in specified-dynamics (SD) simulations from the Whole Atmosphere Community Climate Model (WACCM-SD) despite the fact that these simulations are expected to represent the real-world dynamics and chemistry relevant to stratospheric ozone changes. This paper seeks to explain this specific model and observational discrepancy and to more generally examine the relationship between tro

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Fotiadi, A., N. Hatzianastassiou, C. Matsoukas, et al. "Analysis of the decrease in the tropical mean outgoing shortwave radiation at the top of atmosphere for the period 1984-2000." Atmospheric Chemistry and Physics 5, no. 6 (2005): 1721–30. http://dx.doi.org/10.5194/acp-5-1721-2005.

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Abstract. A decadal-scale trend in the tropical radiative energy budget has been observed recently by satellites, which however is not reproduced by climate models. In the present study, we have computed the outgoing shortwave radiation (OSR) at the top of atmosphere (TOA) at 2.5° longitude-latitude resolution and on a mean monthly basis for the 17-year period 1984-2000, by using a deterministic solar radiative transfer model and cloud climatological data from the International Satellite Cloud Climatology Project (ISCCP) D2 database. Anomaly time series for the mean monthly pixel-level OSR flu

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Zhang, Yongqiang, Ray Leuning, Francis H. S. Chiew, et al. "Decadal Trends in Evaporation from Global Energy and Water Balances." Journal of Hydrometeorology 13, no. 1 (2012): 379–91. http://dx.doi.org/10.1175/jhm-d-11-012.1.

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Abstract Satellite and gridded meteorological data can be used to estimate evaporation (E) from land surfaces using simple diagnostic models. Two satellite datasets indicate a positive trend (first time derivative) in global available energy from 1983 to 2006, suggesting that positive trends in evaporation may occur in “wet” regions where energy supply limits evaporation. However, decadal trends in evaporation estimated from water balances of 110 wet catchments do not match trends in evaporation estimated using three alternative methods: 1) , a model-tree ensemble approach that uses statistica

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Rivoire, Louis, Marianna Linz, Jessica L. Neu, Pu Lin, and Michelle L. Santee. "Satellite nadir-viewing geometry affects the magnitude and detectability of long-term trends in stratospheric ozone." Atmospheric Chemistry and Physics 25, no. 4 (2025): 2269–89. https://doi.org/10.5194/acp-25-2269-2025.

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Abstract. The continued monitoring of the ozone layer and its long-term evolution leans on comparative studies of merged satellite records. Comparing such records presents unique challenges due to differences in sampling, coverage, and retrieval algorithms between observing platforms, all of which complicate the detection of trends. Here we examine the effects of broad nadir averaging kernels on vertically resolved ozone trends, using one record as an example. We find errors as large as 1 % per decade and displacements in trend profile features by as much as 6 km in altitude due to the vertica

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Bernhard, G. "Trends of solar ultraviolet irradiance at Barrow, Alaska, and the effect of measurement uncertainties on trend detection." Atmospheric Chemistry and Physics Discussions 11, no. 9 (2011): 26617–55. http://dx.doi.org/10.5194/acpd-11-26617-2011.

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Abstract. Spectral ultraviolet (UV) irradiance has been observed near Barrow, Alaska (71° N, 157° W) between 1991 and 2011 with an SUV-100 spectroradiometer. The instrument was historically part of the US. National Science Foundation's UV Monitoring Network and is now a component of NSF's Arctic Observing Network. From these measurements, trends in monthly average irradiance and their uncertainties were calculated. The analysis focuses on two quantities, the UV Index (which is affected by atmospheric ozone concentrations) and irradiance at 345 nm (which is virtually insensitive to ozone). Unce

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Bernhard, G. "Trends of solar ultraviolet irradiance at Barrow, Alaska, and the effect of measurement uncertainties on trend detection." Atmospheric Chemistry and Physics 11, no. 24 (2011): 13029–45. http://dx.doi.org/10.5194/acp-11-13029-2011.

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Abstract. Spectral ultraviolet (UV) irradiance has been observed near Barrow, Alaska (71° N, 157° W) between 1991 and 2011 with an SUV-100 spectroradiometer. The instrument was historically part of the US National Science Foundation's UV Monitoring Network and is now a component of NSF's Arctic Observing Network. From these measurements, trends in monthly average irradiance and their uncertainties were calculated. The analysis focuses on two quantities, the UV Index (which is affected by atmospheric ozone concentrations) and irradiance at 345 nm (which is virtually insensitive to ozone). Uncer

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Solmon, F., V. S. Nair, and M. Mallet. "Increasing Arabian dust activity and the Indian Summer Monsoon." Atmospheric Chemistry and Physics Discussions 15, no. 4 (2015): 4879–907. http://dx.doi.org/10.5194/acpd-15-4879-2015.

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Abstract. Over the past decade, Aerosol Optical Depth (AOD) observations based on satellite and ground measurements have shown a significant increase over Arabia and the Arabian Sea, attributed to an intensification of regional dust activity. Recent studies have also suggested that west Asian dust forcing could induce a positive response of Indian monsoon precipitations on a weekly time scale. Using observations and a regional climate model including interactive slab ocean and dust aerosol schemes, the present study investigates possible climatic links between the increasing June-July-August-S

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Boers, Reinout, Theo Brandsma, and A. Pier Siebesma. "Impact of aerosols and clouds on decadal trends in all-sky solar radiation over the Netherlands (1966–2015)." Atmospheric Chemistry and Physics 17, no. 13 (2017): 8081–100. http://dx.doi.org/10.5194/acp-17-8081-2017.

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Abstract. A 50-year hourly data set of global shortwave radiation, cloudiness and visibility over the Netherlands was used to quantify the contribution of aerosols and clouds to the trend in yearly-averaged all-sky radiation (1.81 ± 1.07 W m−2 decade−1). Yearly-averaged clear-sky and cloud-base radiation data show large year-to-year fluctuations caused by yearly changes in the occurrence of clear and cloudy periods and cannot be used for trend analysis. Therefore, proxy clear-sky and cloud-base radiations were computed. In a proxy analysis hourly radiation data falling within a fractional clou

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Ofordu, C. S., Q. A. Onilude, E. D. Adedoyin, et al. "Decadal Assessment and Distribution of Rainfall Anomaly Index (1991 – 2020) for Benin City, Edo State, Nigeria." Journal of Applied Sciences and Environmental Management 26, no. 10 (2022): 1629–35. http://dx.doi.org/10.4314/jasem.v26i10.2.

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This study was designed to provide valuable insight into the temporal patterns of rainfall in Benin City, Edo State, Nigeria using rainfall data from 1991 – 2020 (30 years) collected from Nigerian Meteorological Agency (NIMET), airport station, Benin City. The data were assessed based on 10 years interval (decade) identified as decadal A (1991-2000), decadal B (2001-2010) and decadal C (2011-2020). The data was analysed descriptively using charts and graphs. Also, Rainfall Anomaly Index (RAI) was determined for each decadal. Findings from the study reveal that rainfall pattern changes signific

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Coldewey-Egbers, Melanie, Diego G. Loyola, Christophe Lerot, and Michel Van Roozendael. "Global, regional and seasonal analysis of total ozone trends derived from the 1995–2020 GTO-ECV climate data record." Atmospheric Chemistry and Physics 22, no. 10 (2022): 6861–78. http://dx.doi.org/10.5194/acp-22-6861-2022.

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Abstract. We present an updated perspective on near-global total ozone trends for the period 1995–2020. We use the GOME-type (Global Ozone Monitoring Experiment) Total Ozone Essential Climate Variable (GTO-ECV) satellite data record which has been extended and generated as part of the European Space Agency's Climate Change Initiative (ESA-CCI) and European Union Copernicus Climate Change Service (EU-C3S) ozone projects. The focus of our work is to examine the regional patterns and seasonal dependency of the ozone trend. In the Southern Hemisphere we found regions that indicate statistically si

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Yin, Y., F. Chevallier, P. Ciais, et al. "Decadal trends in global CO emissions as seen by MOPITT." Atmospheric Chemistry and Physics Discussions 15, no. 10 (2015): 14505–47. http://dx.doi.org/10.5194/acpd-15-14505-2015.

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Abstract. Negative trends of carbon monoxide (CO) concentrations are observed in the recent decade by both surface measurements and satellite retrievals over many regions, but they are not well explained by current emission inventories. Here, we attribute the observed CO concentration decline with an atmospheric inversion that simultaneously optimizes the two main CO sources (surface emissions and atmospheric hydrocarbon oxidations) and the main CO sink (atmospheric hydroxyl radical OH oxidation) by assimilating observations of CO and other chemically related tracers. Satellite CO column retri

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JASWAL, A. K. "Sunshine duration climatology and trends in association with other climatic factors over India for 1970-2006." MAUSAM 60, no. 4 (2021): 437–54. http://dx.doi.org/10.54302/mausam.v60i4.1113.

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Changes in sunshine duration in association with total cloud amount, rainy days and good visibility days over India were examined for 1970-2006. Climatologically, annual total sunshine duration over west Rajasthan and adjoining Gujarat is more than 3100 hours which is ideal for harnessing solar energy over these regions. The trend analysis indicates significant decrease in sunshine duration over the country for all months (except June) and the maximum decrease has taken place in January (-0.44 hour/decade) followed by December (-0.39 hour/decade). Seasonally, decline in sunshine hours is highe

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Hu, Shijian, Xi Lu, Shihan Li, et al. "Multi-decadal trends in the tropical Pacific western boundary currents retrieved from historical hydrological observations." Science China Earth Sciences 64, no. 4 (2021): 600–610. http://dx.doi.org/10.1007/s11430-020-9703-4.

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AbstractAs large-scale ocean circulation is a key regulator in the redistribution of oceanic energy, evaluating the multi-decadal trends in the western Pacific Ocean circulation under global warming is essential for not only understanding the basic physical processes but also predicting future climate change in the western Pacific. Employing the hydrological observations of World Ocean Atlas 2018 (WOA18) from 1955 to 2017, this study calculated the geostrophic currents, volume transport and multi-decadal trends for the North Equatorial Current (NEC), the North Equatorial Countercurrent (NECC),

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Broomé, Sara, Léon Chafik, and Johan Nilsson. "Mechanisms of decadal changes in sea surface height and heat content in the eastern Nordic Seas." Ocean Science 16, no. 3 (2020): 715–28. http://dx.doi.org/10.5194/os-16-715-2020.

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Abstract. The Nordic Seas constitute the main ocean conveyor of heat between the North Atlantic Ocean and the Arctic Ocean. Although the decadal variability in the subpolar North Atlantic has been given significant attention lately, especially regarding the cooling trend since the mid-2000s, less is known about the potential connection downstream in the northern basins. Using sea surface heights from satellite altimetry over the past 25 years (1993–2017), we find significant variability on multiyear to decadal timescales in the Nordic Seas. In particular, the regional trends in sea surface hei

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Guo, Yanjun, Fuzhong Weng, Guofu Wang, and Wenhui Xu. "The Long-Term Trend of Upper-Air Temperature in China Derived from Microwave Sounding Data and Its Comparison with Radiosonde Observations." Journal of Climate 33, no. 18 (2020): 7875–95. http://dx.doi.org/10.1175/jcli-d-19-0742.1.

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AbstractCurrently, the satellite Microwave Sounding Unit (MSU/AMSU) datasets developed from three organizations—Remote Sensing Systems (RSS), the University of Alabama at Huntsville (UAH), and the NOAA Center for Satellite Applications and Research (STAR)—are often used to monitor the global long-term trends of temperatures in the lower troposphere (TLT), midtroposphere (TMT), total troposphere (TTT), troposphere and stratosphere (TTS), and lower stratosphere (TLS). However, the trend in these temperatures over China has not been quantitatively assessed. In this study, the decadal variability

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Vicente-Serrano, Sergio M., Cesar Azorin-Molina, Arturo Sanchez-Lorenzo, et al. "Recent changes and drivers of the atmospheric evaporative demand in the Canary Islands." Hydrology and Earth System Sciences 20, no. 8 (2016): 3393–410. http://dx.doi.org/10.5194/hess-20-3393-2016.

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Abstract. We analysed recent evolution and meteorological drivers of the atmospheric evaporative demand (AED) in the Canary Islands for the period 1961–2013. We employed long and high-quality time series of meteorological variables to analyse current AED changes in this region and found that AED has increased during the investigated period. Overall, the annual ETo, which was estimated by means of the FAO-56 Penman–Monteith equation, increased significantly by 18.2 mm decade−1 on average, with a stronger trend in summer (6.7 mm decade−1). In this study we analysed the contribution of (i) the ae

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Wang, Xuanji, Jeffrey Key, Yinghui Liu, Charles Fowler, James Maslanik, and Mark Tschudi. "Arctic Climate Variability and Trends from Satellite Observations." Advances in Meteorology 2012 (2012): 1–22. http://dx.doi.org/10.1155/2012/505613.

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Arctic climate has been changing rapidly since the 1980s. This work shows distinctly different patterns of change in winter, spring, and summer for cloud fraction and surface temperature. Satellite observations over 1982–2004 have shown that the Arctic has warmed up and become cloudier in spring and summer, but cooled down and become less cloudy in winter. The annual mean surface temperature has increased at a rate of 0.34°C per decade. The decadal rates of cloud fraction trends are −3.4%, 2.3%, and 0.5% in winter, spring, and summer, respectively. Correspondingly, annually averaged surface al

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Solomon, Amy. "Using Initialized Hindcasts to Assess Simulations of 1970–2009 Equatorial Pacific SST, Zonal Wind Stress, and Surface Flux Trends." Journal of Climate 27, no. 19 (2014): 7385–93. http://dx.doi.org/10.1175/jcli-d-13-00709.1.

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Abstract Initialized decadal hindcasts are used to assess simulations of 1970–2009 equatorial Pacific SST, zonal wind stress, and surface flux trends. Initialized hindcasts are useful to assess how well the models simulate observed trends, as well as how simulations of observed trends (due primarily to natural variability) differ from ensemble-mean forecasted trends (due to the response to an increase in external forcing). All models forecast a statistically significant warming trend in both the warm-pool and cold-tongue regions. However, while the warm-pool warming trend is within the observe

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BHATLA, R., A. TRIPATHI, and R. S. SINGH. "Analysis of rainfall pattern and extreme events during southwest monsoon season over Varanasi during 1971-2010." MAUSAM 67, no. 4 (2021): 903–12. http://dx.doi.org/10.54302/mausam.v67i4.1418.

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An attempt has been made to detect the pattern of rainfall and examine the trends and variations of extreme events of rainfall over Varanasi (Uttar Pradesh, India) through seasonal, monthly and decadal analysis during southwest monsoon season (June-September) using the daily rainfall data of 40 years period from 1971-2010. The results show that cumulative rainfall during 1971-2010 is overall decreasing in monsoon season as well as in all the months June, July, August and September. In general, the observed rainfall events in all categories (Non rainy day, 0-2.4 mm; Category I, 2.5-64.4; Catego

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JASWAL, A. K., G. S. PRAKASA RAO, and U. S. DE. "Spatial and temporal characteristics of evaporation trends over India during 1971-2000." MAUSAM 59, no. 2 (2021): 149–58. http://dx.doi.org/10.54302/mausam.v59i2.1223.

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Evaporation and rainfall data for the period 1971-2000 for 58 well distributed stations over India were selected for this study. Trends of these two parameters for the country as a whole and for individual stations for annual (January – December), winter (December, January and February), summer (March – May), monsoon (June – September) and post-monsoon (October, November) period were analysed and tested for significance at 95% level of confidence. The analysis shows that for the country as a whole, the evaporation has significantly decreased in all seasons while there is no significant trend i

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Huang, F. T., H. G. Mayr, J. M. Russell, and M. G. Mlynczak. "Ozone and temperature decadal trends in the stratosphere, mesosphere and lower thermosphere, based on measurements from SABER on TIMED." Annales Geophysicae 32, no. 8 (2014): 935–49. http://dx.doi.org/10.5194/angeo-32-935-2014.

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Abstract. We have derived ozone and temperature trends from years 2002 through 2012, from 20 to 100 km altitude, and 48° S to 48° N latitude, based on measurements from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) satellite. For the first time, trends of ozone and temperature measured at the same times and locations are obtained, and their correlations should provide useful information about the relative importance of photochemistry versus dynamics over the longer term. We are n

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ABU HAMMAD, Ahmad H. "RAINFALL TRENDS AS AN INDICATION TO CLIMATE CHANGE SINCE THE 19TH CENTURY IN THE PALESTINIAN CENTRAL MOUNTAINS: JERUSALEM GOVERNORATE AS A CASE STUDY." Carpathian Journal of Earth and Environmental Sciences 17, no. 1 (2022): 59–68. http://dx.doi.org/10.26471/cjees/2022/017/200.

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Climate change is a worldwide problem that is facing the globe in different aspects. To investigate this phenomenon, research has been conducted to check whether climate change is affecting the western part of Jerusalem Governorate or not. Long-term data on annual, seasonal and monthly rainfall were collected from different sources and analyzed for long-term monthly and annual trends. Results showed significant (p< 0.05) decrease in the annual rainfall, with about 7.3 mm decadal reduction during 1850-2018. The highest and significant decrease in decadal rainfall occurred during 1890-1939 an

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Galí, Martí, Emmanuel Devred, Marcel Babin, and Maurice Levasseur. "Decadal increase in Arctic dimethylsulfide emission." Proceedings of the National Academy of Sciences 116, no. 39 (2019): 19311–17. http://dx.doi.org/10.1073/pnas.1904378116.

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Dimethylsulfide (DMS), a gas produced by marine microbial food webs, promotes aerosol formation in pristine atmospheres, altering cloud radiative forcing and precipitation. Recent studies suggest that DMS controls aerosol formation in the summertime Arctic atmosphere and call for an assessment of pan-Arctic DMS emission (EDMS) in a context of dramatic ecosystem changes. Using a remote sensing algorithm, we show that summertime EDMS from ice-free waters increased at a mean rate of 13.3 ± 6.7 Gg S decade−1 (∼33% decade−1) north of 70°N between 1998 and 2016. This trend, mostly explained by the r

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