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Journal articles on the topic 'Monsoon lows'

Author: Grafiati

Published: 6 September 2023

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1

KUMAR, J. RAJENDRA, and S. K. DASH. "Inter-annual and intra-seasonal variation of some characteristics of monsoon disturbances formed over the Bay." MAUSAM 50, no. 1 (2021): 55–62. http://dx.doi.org/10.54302/mausam.v50i1.1804.

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The characteristics of monsoon disturbances during drought and flood years for the period 1971-96 are studied to find out their inter-annual variations. Variations of some of the characteristics of monsoon disturbances formed over Bay during 1979-88, with respect to different monsoon conditions such as strong, weak and break monsoons, are also studied. The results show that monsoon disturbance days are higher during flood years than during drought years. Drought years are associated with higher chances of low pressure areas to intensity into depressions, less westward movement, more horizontal

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KUMAR, J. RAJENDRA, V. THAPLIYAL, and S. K. DASH. "Decadal and epochal variation of frequency and duration of monsoon disturbances and their secular relationship with rainfall over India." MAUSAM 55, no. 3 (2022): 397–408. http://dx.doi.org/10.54302/mausam.v55i3.1171.

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Decadal and epochal variation of frequency and duration of monsoon disturbances like low pressure areas (lows), depressions and Cyclonic Storms (CS) over Indian region are studied by using 110 years (1890-1999) data. No linearly decreasing/increasing trend is observed during 110 years period in any of their frequencies. However, epochal linearly decreasing/increasing trends are noticed in decadal frequencies or duration of different monsoon disturbances. Decadal frequencies of depressions, CS and depressions are decreasing from 1970-79, till recently ended decade of 1990-99. During recent deca

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3

BHADRAM, C. V. V. "A synoptic study of active and weak southwest monsoon over Andhra Pradesh." MAUSAM 54, no. 2 (2003): 385–92. http://dx.doi.org/10.54302/mausam.v54i2.1523.

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An attempt has been made in this study to identify the synoptic systems that cause active or vigorous monsoon conditions over the three meteorological sub-divisions of Andhra Pradesh using the data for the years 1986 to 2000. Despite significant decrease in the frequency of formation of monsoon depressions in recent years, monsoon performance is noticed to be very good. Monsoon lows and upper air cyclonic-circulations (cycirs) found to be the chief synoptic systems which activate the monsoon over the state. Typical cases of these synoptic situations are discussed.

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JENAMANI, RAJENDRA KUMAR, and S. K. DASH. "A study on the role of synoptic and semi-permanent features of Indian summer monsoon on it’s rainfall variations during different phases of El-Nino." MAUSAM 56, no. 4 (2022): 825–40. http://dx.doi.org/10.54302/mausam.v56i4.1038.

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Characteristics of different synoptic and semi-permanent features of Indian Summer Monsoon Rainfall (ISMR), such as monsoon disturbances (lows and depressions), monsoon trough and Tibetan anticyclone and duration of monsoon, are studied individually for different phases of El-Nino during the period 1960-98 to understand why during some El-Nino single events, ISMR was deficient while during other years, ISMR was on the positive side of normal or normal. This study examines cases of El-Nino double events with deficient and near deficient ISMR in one of the two years and in both the years respect

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RAJAMANI, S. "Energetics of the monsoon circulation over south Asia :Part -I Diabatic heating and the generation of available potential energy." MAUSAM 36, no. 1 (2022): 7–12. http://dx.doi.org/10.54302/mausam.v36i1.1573.

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Considering the monsoon circulation as the mean zonal flow with standing or stationary eddies (monsoon trough etc) and the transient eddies (monsoon depressions, lows etc) supermposed on it, diabatic heating and generation of available potential energy over south Asia have been computed for the typical monsoon month of July 1963, based on the computations of vertical velocity from omega-equation, and thermodynamic energy equation. Regions of upward vertical velocity are found to be areas of good rainfall. Rate of monthly mean diabatic heating in the troposphere is of the order of 0.5 deg

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Haertel, Patrick, and William R. Boos. "Global association of the Madden-Julian Oscillation with monsoon lows and depressions." Geophysical Research Letters 44, no. 15 (2017): 8065–74. http://dx.doi.org/10.1002/2017gl073625.

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Koteswaram, P. "Upper level 'Lows' in low latitudes in the Indian Area during SW Monsoon season and 'Breaks' in the monsoon." MAUSAM 1, no. 2 (2022): 162–64. http://dx.doi.org/10.54302/mausam.v1i2.4559.

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MUKHERJEE, AK, and G. NATARAJAN. "Westward moving sea level low pressure systems in the south Bay of Bengal during southwest monsoon." MAUSAM 19, no. 3 (2022): 285–88. http://dx.doi.org/10.54302/mausam.v19i3.5325.

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The movement of low pressure systems from the east, across south Bay of Bengal and south Indian Peninsula, during July and August, when the southwest monsoon has established itself over India has been studied for a 20-year period from 1946 to 1965, Only well marked systems, which could be delineated on the sea level synoptic chart, are reported In the present paper, The characteristics of these systems and its relation with other systems breaks in southwest monsoon etc are discussed.  The effect of migratory lows on rainfall has been studied for Madras State, Kerala and coastal Mys

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9

Yanase, Wataru, Hiroshi Niino, Shun-ichi I. Watanabe, et al. "Climatology of Polar Lows over the Sea of Japan Using the JRA-55 Reanalysis." Journal of Climate 29, no. 2 (2016): 419–37. http://dx.doi.org/10.1175/jcli-d-15-0291.1.

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Abstract Polar lows are intense meso-α-scale cyclones that develop over the oceans poleward of the main baroclinic zone. A number of previous studies have reported polar low formation over the Sea of Japan within the East Asian winter monsoon. To understand the climatology of polar lows over the Sea of Japan, a tracking algorithm for polar lows is applied to the recent JRA-55 reanalysis. The polar low tracking is applied to 36 cold seasons (October–March) from October 1979 to March 2015. The polar lows over the Sea of Japan reach their maximum intensity on the southeastern side of the midline

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MOHAPATRA, M. "Relative contribution of synoptic systems to monsoon rainfall over Orissa." MAUSAM 58, no. 1 (2021): 17–32. http://dx.doi.org/10.54302/mausam.v58i1.1125.

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ABSTRACT. The low/depression over northwest (NW) Bay of Bengal is the largest contributor to seasonal monsoon rainfall over all stations in Orissa and Orissa as a whole. The Low Pressure Systems (LPS) and cyclonic circulation (cycir) extending upto 500 hPa level over NW Bay of Bengal alone contribute about 22% to the seasonal monsoon rainfall through about 12 days. The monsoon trough without any significant embedded systems over Orissa and adjoining regions contributes about 28% to seasonal rainfall through about 55 days. All types of LPS including low, depression and cyclonic storm yield maxi

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Douglas, Arthur V., and Phillip J. Englehart. "A Climatological Perspective of Transient Synoptic Features during NAME 2004." Journal of Climate 20, no. 9 (2007): 1947–54. http://dx.doi.org/10.1175/jcli4095.1.

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Abstract This note provides a first look at a recently developed long-term climatology of transient synoptic features in northern Mexico. Key features investigated include inverted troughs, cutoff lows, cold fronts, and open troughs (westerly short waves). This 35-yr analysis of transient systems crossing northern Mexico (1967–2001) was developed to help place the summer climatology of the 2004 North American Monsoon Experiment (NAME) into a broader perspective. Inverted troughs are found to be the most commonly occurring transient synoptic feature during the monsoon with a mean frequency of o

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JADHAV, S. K., and A. A. MUNOT. "Statistical study of the low pressure systems during summer monsoon season over the Indian region." MAUSAM 55, no. 1 (2022): 15–30. http://dx.doi.org/10.54302/mausam.v55i1.853.

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The occurrence of a closed low pressure area due to low, depression or cyclonic storm is termed as Low Pressure System (LPS). LPS plays an important role in the distribution of rainfall during the southwest monsoon season. Lows produce widespread rainfall as compared to depressions and cyclonic storms which yield concentrated rainfall over a smaller area. The distribution of rainfall depends upon the track and life span of LPS. Most of the LPS formed over the Bay of Bengal travel in northwest direction strengthening the rainfall activities over the large parts of the country. In this study, th

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JOSHI, P. C., B. SIMON, and P. K. THAPLIYAL. "Satellite estimated water vapour in relation to Asian monsoon Circulation." MAUSAM 52, no. 1 (2021): 109–16. http://dx.doi.org/10.54302/mausam.v52i1.1681.

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Water vapour plays a crucial role in various exchange and transport processes in the atmosphere and its knowledge in the tropics is extremely important for input to various global circulation models. The vast oceans of earth's surface provide a large source of moisture and continuously modify the thermodynamics of the atmosphere through latent heat flux and condensational heating. In the tropics, especially in the Indian ocean the water vapour is highly heterogeneousin nature, and is one of the parameters which is responsible for cloud formation, associated with tropical systems like monsoon f

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Khan, Saifullah, and Mahmood Ul Hasan. "Evapotranspiration Distribution and Variation of Pakistan (1931-2015)." Annals of Valahia University of Targoviste, Geographical Series 17, no. 2 (2017): 184–97. http://dx.doi.org/10.1515/avutgs-2017-0017.

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AbstractEvapotranspiration is the main element of aridity and desertification and to balance the natural hydrological processes. Pakistan has a high degree of evapotranspiration, as it is in subtropical belt, with long sunshine duration and low cloudiness in summers. June is the warmest month, when the evapotranspiration exceeds 7mm (0.28inches), whereas, January is the coldest month, when evapotranspiration of the country falls to 1mm (0.04inches). The maximum evapotranspiration has been recorded at the southern latitudes of the country (Hyderabad and Jacobabad), while it decreases towards no

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Davidson, Noel E. "Vorticity Budget for AMEX. Part II: Simulations of Monsoon Onset, Midtropospheric Lows, and Tropical Cyclone Behavior." Monthly Weather Review 123, no. 6 (1995): 1636–59. http://dx.doi.org/10.1175/1520-0493(1995)123<1636:vbfapi>2.0.co;2.

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Molinari, John, and David Vollaro. "Development of a One-Month-Long, Westward-Propagating Subtropical Low in Boreal Summer." Monthly Weather Review 146, no. 1 (2018): 231–42. http://dx.doi.org/10.1175/mwr-d-17-0127.1.

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Abstract A strong MJO event produced an upper-tropospheric jet streak in northeast Asia and repeated wave breaking in the jet exit region along 150°E during July 1988. A midlatitude low moved equatorward and intensified in the presence of bandpass-filtered (15–100 day) Q vector forcing for upward motion associated with the wave breaking. This forced ascent helped to moisten the atmosphere enough to increase the column water vapor to above 55 mm. This value was sufficiently large to support a self-sustaining low even after the upper forcing weakened. The horizontal scale of the Q vector forcing

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Hunt, Kieran M. R., Andrew G. Turner, and Len C. Shaffrey. "Extreme Daily Rainfall in Pakistan and North India: Scale Interactions, Mechanisms, and Precursors." Monthly Weather Review 146, no. 4 (2018): 1005–22. http://dx.doi.org/10.1175/mwr-d-17-0258.1.

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While much of India is used to heavy precipitation and frequent low pressure systems during the summer monsoon, toward the northwest and into Pakistan, such events are uncommon. Here, as much as a third of the annual rainfall is delivered sporadically during the winter monsoon by western disturbances. Such events of sparse but heavy precipitation in this region of typically mountainous valleys in the north and desert in the south can be catastrophic, as in the case of the Pakistan floods of July 2010. In this study, extreme precipitation events (EPEs) in a box approximately covering this regio

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SAHA, KSHUDIRAM, and SURANJANA SAHA. "On the monsoons of South America Part 2 : Interaction with extratropical disturbances and formation of tropical depressions and upper-tropospheric cyclonic vortices." MAUSAM 55, no. 2 (2022): 237–56. http://dx.doi.org/10.54302/mausam.v55i2.1080.

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The paper reveals a stationary wave structure of the heat low circulation over South America during the southern summer and discusses how the stationary wave may interact with eastward-propagating extratropical disturbances of the two hemispheres. The interactions appear to explain several observed features of the continent’s weather and climate. In particular, they appear to lead to formation of westward-propagating tropical disturbances, such as monsoon lows and depressions and upper-tropospheric cyclonic vortices. The origin, structure, development and movement of these disturbances are dis

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Krishnamurthy, V., and J. Shukla. "Intraseasonal and Seasonally Persisting Patterns of Indian Monsoon Rainfall." Journal of Climate 20, no. 1 (2007): 3–20. http://dx.doi.org/10.1175/jcli3981.1.

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Abstract The space–time structure of the active and break periods of the Indian monsoon has been studied using 70-yr-long high-resolution gridded daily rainfall data over India. The analysis of lagged composites of rainfall anomalies based on an objective categorization of active and break phases shows that the active (break) cycle, with an average life of 16 days, starts with positive (negative) rainfall anomalies over the Western Ghats and eastern part of central India and intensifies and expands to a region covering central India and parts of north India during the peak phase, while negativ

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20

Hatsuzuka, Daisuke, and Hatsuki Fujinami. "Effects of the South Asian Monsoon Intraseasonal Modes on Genesis of Low Pressure Systems over Bangladesh." Journal of Climate 30, no. 7 (2017): 2481–99. http://dx.doi.org/10.1175/jcli-d-16-0360.1.

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The quasi-biweekly oscillation (QBW) is a dominant intraseasonal mode in summer rainfall over Bangladesh. Active phases of the QBW are often accompanied by low pressure systems (LPSs) such as vortex-type lows. This study investigated the effects of two intraseasonal modes, the QBW and the boreal summer intraseasonal oscillation (BSISO), on the genesis of LPSs over Bangladesh during 29 summer monsoon seasons. Daily lag composites of convection and low-level atmospheric circulation were constructed for active-phase cases with LPSs (LPS case) and without LPSs (non-LPS case) based on rainfall in t

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Grimm, Alice M., and C. J. C. Reason. "Intraseasonal Teleconnections between South America and South Africa." Journal of Climate 28, no. 23 (2015): 9489–97. http://dx.doi.org/10.1175/jcli-d-15-0116.1.

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Abstract Teleconnection of climate anomalies between various parts of the tropics and extratropics is a well-established feature of the climate system. Building on previous work showing that a teleconnection exists between the South American monsoon system and interannual summer rainfall variability over southern Africa, this study considers intraseasonal variability over these landmasses. It is shown that strong teleconnections exist between South African daily rainfall and that over various areas of South America, with the latter leading by 4–5 days, for both winter and summer, involving reg

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22

Zhang, Kun, Feifei Wang, Ningquan Weng, Xiaoqing Wu, Xuebin Li, and Tao Luo. "Optical Turbulence Characteristics in the Upper Troposphere–Lower Stratosphere over the Lhasa within the Asian Summer Monsoon Anticyclone." Remote Sensing 14, no. 16 (2022): 4104. http://dx.doi.org/10.3390/rs14164104.

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The high elevation, complex topography, and unique atmospheric circulations of the Tibetan Plateau (TP) make its optical turbulence characteristics different from those in low-elevation regions. In this study, the characteristics of the atmospheric refractive index structure constant (Cn2) profiles in the Lhasa area at different strength states of the Asian summer monsoon anticyclone (ASMA) are analyzed based on precious in situ sounding data measured over the Lhasa in August 2018. Cn2 in the upper troposphere–lower stratosphere fluctuates significantly within a few days during the ASMA, parti

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Chen, Tsing-Chang. "Characteristics of Summer Stationary Waves in the Northern Hemisphere." Journal of Climate 23, no. 17 (2010): 4489–507. http://dx.doi.org/10.1175/2010jcli3149.1.

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Abstract Summer stationary waves in the Northern Hemisphere are separated by a midlatitude transition zone into the subtropical monsoon regime with a vertical phase reversal and the subarctic regime with a vertically uniform structure. The dynamics and maintenance mechanism of the subtropical stationary waves have been investigated in the context of monsoon circulation. Depicted in terms of streamfunction with 40-yr ECMWF Re-Analysis (ERA-40), the dynamic characteristics of stationary waves in the transition zone and the subarctic region are thus the focus of this study. The dynamics and maint

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Dixon, Ross D., Anne Sophie Daloz, Daniel J. Vimont, and Michela Biasutti. "Saharan Heat Low Biases in CMIP5 Models." Journal of Climate 30, no. 8 (2017): 2867–84. http://dx.doi.org/10.1175/jcli-d-16-0134.1.

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Representing the West African monsoon (WAM) is a major challenge in climate modeling because of the complex interaction between local and large-scale mechanisms. This study focuses on the representation of a key aspect of West African climate, namely the Saharan heat low (SHL), in 22 global climate models from phase 5 of the Coupled Model Intercomparison Project (CMIP5) multimodel dataset. Comparison of the CMIP5 simulations with reanalyses shows large biases in the strength and location of the mean SHL. CMIP5 models tend to develop weaker climatological heat lows than the reanalyses and place

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Berry, Gareth, Michael J. Reeder, and Christian Jakob. "Physical Mechanisms Regulating Summertime Rainfall over Northwestern Australia." Journal of Climate 24, no. 14 (2011): 3705–17. http://dx.doi.org/10.1175/2011jcli3943.1.

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Abstract Summertime (December–February) rainfall over northwestern Australia has increased significantly since the middle of the twentieth century. As a prerequisite to understanding the observed trend, this investigation examines the broad characteristics of rainfall and identifies the physical mechanisms by which rainfall in the region is initiated. This is achieved using a combination of in situ, spaceborne, and numerical reanalysis datasets. Hourly pluviograph data and the Tropical Rainfall Measuring Mission (TRMM)-3B42 dataset show distinctly different diurnal cycles of rainfall in differ

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Quadir, Dewan Abdul, Towhida Rashid, Shammi Akhter, and MN Ahasan. "Investigation of Meteorological Conditions Favourable for Formation of Thunderstorm Occurred Over Bangladesh Through Simulation by WRF-ARW Model." Dhaka University Journal of Science 68, no. 1 (2020): 71–77. http://dx.doi.org/10.3329/dujs.v68i1.54599.

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Investigation of meteorological conditions favorable for formation of pre-monsoon thunderstorm over Bangladesh has been conducted by simulating a selected thunderstorm case using ARW dynamic core of WRF model (WRF-ARW). A multi-cell thunderstorm formed on 30-03-2018 over the northwestern tip of Bangladesh and adjacent territories of India and moved south-southeast wards with its highest development at 09:30 UTC was selected for this study. The chosen case of thunderstorm has 3 distinct cells of which 2 cells have the width of over 100 km each and the third one located in the eastern Bangladesh

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Minobe, Shoshiro, Akinori Sako, and Makoto Nakamura. "Interannual to Interdecadal Variability in the Japan Sea Based on a New Gridded Upper Water Temperature Dataset." Journal of Physical Oceanography 34, no. 11 (2004): 2382–97. http://dx.doi.org/10.1175/jpo2627.1.

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Abstract A new gridded water temperature dataset of upper 400-m depths (0, 50, 100, 200, 300, and 400 m) for the Japan Sea (or East Sea) is produced by using an optimal interpolation technique from 1930 to 1996, based on oceanographic observations collected in the World Ocean Database 1998. The temperature data are analyzed by a complex empirical orthogonal function (CEOF) with six levels combined using the data for a period from 1957 to 1996, during which most of gridded data are available. Before calculating the CEOFs, low-pass or high-pass filters (cutoff period at 7 yr) are applied to sepa

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Tan, Liangcheng, Yanzhen Li, and Wenxia Han. "A Paleoclimate Prognosis of the Future Asian Summer Monsoon Variability." Atmosphere 12, no. 11 (2021): 1391. http://dx.doi.org/10.3390/atmos12111391.

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In recent years, more and more record-breaking extreme weather/climate events have been reported from the Asian monsoon region, which have caused tremendous loss of property and lives. In this paper, we analyzed the Asian summer monsoon (ASM) variability during the Holocene and evaluated future climate extremes in monsoonal China from a paleoclimatic view. We found a significant regime transition to more chaotic fluctuations, with enhanced decadal variability of the ASM since 6.6 ka BP. We suggested the gradual intensification of ENSO was responsible for enhancing the ASM variability since the

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S. N. PANDEY, R. BHATLA, MANOJ K. SRIVASTAVA, and R. K. MALL. "Floods and hazardous heavy rainfall in India: Comparison between local versus oceanic impact." Journal of Agrometeorology 12, no. 1 (2010): 40–43. http://dx.doi.org/10.54386/jam.v12i1.1265.

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India, leading to heavy rainfall. Such heavy rainfall result in floods for wider region of northern India, and, which, finally, causes loss of agriculture, human and animal’s life, outbreak of diseases/ epidemics, and thus affecting national economy. An attempt has therefore, been made to analyze the disastrous events that occurred in the summer monsoon months over different states in India for the period 1981-2000. The analyses included the raining event which were active, but, caused due to- or without the monsoonal-systems that were formed in north Indian Ocean. Results showed that West Ben

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Gupta, Raj, DK Benbi, and IP Abrol. "Indian Agriculture needs a Strategic Shift for Improving Fertilizer Response and Overcome Sluggish Foodgrain Production." Journal of Agronomy Research 4, no. 3 (2021): 1–16. http://dx.doi.org/10.14302/issn.2639-3166.jar-21-4018.

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In India, loss of fertility through soil erosion is primarily a summer monsoons mediated phenomenon. Reversing the land degradation processes contribute to water availability, soil fertility maintenance, adapting to climate change and overall food security. Whereas kharif (monsoon/rainy season crop) foodgrain production largely depends on summer monsoons, the rabi season (post-rainy season/winter crop) rainfall is too little to exert a direct influence. In spite of larger acreage under kharif foodgrain crops, total fertiliser consumption during kharif and rabi seasons is comparable. Negative r

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Rao, B. V. Mohana, A. Mani, B. Sarojini Devi, S. Vishnuvardhan, and Ch Sujani Rao. "Spatial and Temporal Variations of Land Use and Land Cover In Kadiri Watershed Using Rs & Gis Techniques." International Journal of Plant & Soil Science 35, no. 15 (2023): 23–31. http://dx.doi.org/10.9734/ijpss/2023/v35i153069.

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The change detection and land use and land cover (LULC) maps are more important powerful forces behind numerous ecological systems and fallow land. It is widely known that land use/land cover (LULC) changes significantly alter watershed hydrology and sediment yields. The impact, especially on erosion and sedimentation, is likely to be exacerbated in regions dominated by high rainfall patterns such as monsoons. RS & GIS technologies are very useful to determine the LULC changes. Present research area Kadiri Watershed of Anantapur district of Andhra Pradesh, India, drains an area about 240 k

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Sadhwani, Kashish, T. I. Eldho, Manoj K. Jha, and Subhankar Karmakar. "Effects of Dynamic Land Use/Land Cover Change on Flow and Sediment Yield in a Monsoon-Dominated Tropical Watershed." Water 14, no. 22 (2022): 3666. http://dx.doi.org/10.3390/w14223666.

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It is widely known that land use/land cover (LULC) changes significantly alter watershed hydrology and sediment yields. The impact, especially on erosion and sedimentation, is likely to be exacerbated in regions dominated by high rainfall patterns such as monsoons. This study analyzed the hydrological responses of LULC changes in terms of streamflow (SF) and sediment yield (SY) in a monsoon-dominated tropical watershed, the Periyar River Watershed (PRW) in Kerala, India. This watershed drains an area of 4793 km2 characterized by an average monsoon rainfall of 2900 mm from June to November. The

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Mahata, Khadak Singh, Maheswar Rupakheti, Arnico Kumar Panday, et al. "Observation and analysis of spatiotemporal characteristics of surface ozone and carbon monoxide at multiple sites in the Kathmandu Valley, Nepal." Atmospheric Chemistry and Physics 18, no. 19 (2018): 14113–32. http://dx.doi.org/10.5194/acp-18-14113-2018.

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Abstract. Residents of the Kathmandu Valley experience severe particulate and gaseous air pollution throughout most of the year, even during much of the rainy season. The knowledge base for understanding the air pollution in the Kathmandu Valley was previously very limited but is improving rapidly due to several field measurement studies conducted in the last few years. Thus far, most analyses of observations in the Kathmandu Valley have been limited to short periods of time at single locations. This study extends the past studies by examining the spatial and temporal characteristics of two im

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RAGHAVENDRA, V. K. "Trends and periodicities of rainfall in sub-divisions of Maharashtra State." MAUSAM 25, no. 2 (2022): 197–210. http://dx.doi.org/10.54302/mausam.v25i2.5194.

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The Maharashtra State of India is divided into four meteorological sub-divisions, viz., Konkan, Madhya Maharashtra, Marathwada and Vidarbha. Of these, Madhya Maharashtra and Marathwada are prone to droughts. The principal rainy season is the monsoon season of June to September when over 80 per cent of the annual rainfall is received. The coefficient of variation is about 20 per cent for the annual and monsoon rainfall except in Marathwada where it is 25 per cent. The annual and monsoon rainfalls follow the normal distribution for their yearly frequencies. In this region the annual and the mons

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P. Hemasankari, D. Prema, Kaladaran, and Vasanth Kripa. "Seasonal variations of hydrographic parameters off the Chennai coast, India." Ecology, Environment and Conservation 29, no. 01 (2023): 374–80. http://dx.doi.org/10.53550/eec.2023.v29i01.056.

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The environment plays a major role in determining the abundance of fishes in a particular region and it helps to predict the probable fishing zone. This environment variables includes temperature, salinity, pH, TSS, DO (Dissolved Oxygen), chlorophyll a, b and c, primary productivity, gross and net, nutrients, phosphate, nitrate and ammonia. These parameters were estimated using standard procedures. These parameters in a particular fishing zone varies from season to season. This seasonal variations of these parameters and its relationship with each other are studied in Ennore, (Lattitude, 80°19

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M. J. S. Bowman, D., and J. C. Z. Woinarski. "Biogeography of Australian monsoon rainforest mammals: implications for the conservation of rainforest mammals." Pacific Conservation Biology 1, no. 2 (1994): 98. http://dx.doi.org/10.1071/pc940098.

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Monsoon rainforests form an archipelago of small habitat fragments throughout the wet-dry tropics of northern Australia. According to the definition of Winter (1988) the current monsoon rainforest mammal assemblage contains only one rainforest specialist mammal species (restricted to Cape York Peninsula), and is dominated by eutherian habitat generalists (murids and bats) that mostly occur in surrounding savannah habitats. The mammal assemblages in monsoon rainforests across northern Australia (Cape York Peninsula, Northern Territory and the Kimberley) are essentially regional subsets of the l

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Hyvärinen, A. P., T. Raatikainen, D. Brus, et al. "Effect of the summer monsoon on aerosols at two measurement stations in Northern India – Part 1: PM and BC concentrations." Atmospheric Chemistry and Physics Discussions 11, no. 1 (2011): 1715–48. http://dx.doi.org/10.5194/acpd-11-1715-2011.

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Abstract. Particulate matter (PM) and black carbon (BC) concentrations were measured at two locations in Northern India during 2006–2010. The first measurement station is a background site in Mukteshwar, about 350 km northeast of New Delhi, in the foothills of the Indian Himalayas. The second measurement site was located in Gual Pahari, about 25 km south of New Delhi. Here we focused on resolving the effects of the Indian summer monsoon on the particulate matter and black carbon concentrations at the two stations. The average monsoon time concentrations were decreased by 55–70% compared to the

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Tara, J., and Monika Sharma. "Life history of Papilio Polytes Romulus (Lepidoptera: Papilionidae) on Murraya Koenigii (Curry leaf), an economically important medicinal plant in Jammu." Journal of Non-Timber Forest Products 17, no. 2 (2010): 173–78. http://dx.doi.org/10.54207/bsmps2000-2010-o6509h.

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Papilio polytes romulus has been recorded as a serious pest of Murraya koenigii (L.) Spreng. in Jammu region of J.&K. State during the survey conducted from March 2008 to February 2009. Caterpillars cause tremendous loss by defoliating young and tender leaves of host plant. The pest occurs throughout the year. A comparative analysis of its luife history during pre-monsoon and post-monsoon periods was conducted under laboratory conditions which indicated that it takes an average of 27.0+0.86 days and 32.93+0.14 days for the completion of one generation i.e. egg to adult during pre-monsoon a

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Hyvärinen, A. P., T. Raatikainen, D. Brus, et al. "Effect of the summer monsoon on aerosols at two measurement stations in Northern India – Part 1: PM and BC concentrations." Atmospheric Chemistry and Physics 11, no. 16 (2011): 8271–82. http://dx.doi.org/10.5194/acp-11-8271-2011.

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Abstract. Particulate matter (PM) and equivalent black carbon (BCe) concentrations were measured at two locations in northern India during 2006–2010. The first measurement station was a background site in Mukteshwar, about 350 km northeast of New Delhi, in the foothills of the Indian Himalayas. The second measurement site was located in Gual Pahari, about 25 km south of New Delhi. Here we focused on resolving the effects of the Indian summer monsoon on the particulate matter and equivalent black carbon concentrations at two stations. The average monsoon time concentrations were decreased by 55

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Zhang, Taotao, Tao Wang, Gerhard Krinner, et al. "The weakening relationship between Eurasian spring snow cover and Indian summer monsoon rainfall." Science Advances 5, no. 3 (2019): eaau8932. http://dx.doi.org/10.1126/sciadv.aau8932.

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Substantial progress has been made in understanding how Eurasian snow cover variabilities affect the Indian summer monsoon, but the snow-monsoon relationship in a warming atmosphere remains controversial. Using long-term observational snow and rainfall data (1967–2015), we identified that the widely recognized inverse relationship of central Eurasian spring snow cover with the Indian summer monsoon rainfall has disappeared since 1990. The apparent loss of this negative correlation is mainly due to the central Eurasian spring snow cover no longer regulating the summer mid-tropospheric temperatu

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Parasnis, S., Mary Selvam, Ramachandra Murty, and Ramana Murty. "Dynamic Responses Warm of Monsoon Clouds Salt Seeding." Journal of Weather Modification 14, no. 1 (2012): 36–37. http://dx.doi.org/10.54782/jwm.v14i1.65.

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High resolution temperature measurements during single-level air- craft penetrations through warm monsoon clouds before and after salt seeding had a significant wave-length of about 2 km. The slope of the spectra relating to not-seeded traverses followed a -5/3 power law. The slope of the spectra relating to seeded traverses increased when liquid water content increased and rain formed. The temperature spectra of the seeded traverses showed a net energy gain in the larger wave-lengths ( >540 m) and a net energy loss in the shorter wavelengths. The net-energy gain could be due to condensatio

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Iqbal, A. Muhammed, Kattany Vidyasagaran, and Narayan Ganesh. "Host specificity of some wood decaying-fungi in moist deciduous forests of Kerala, India." Journal of Threatened Taxa 9, no. 4 (2017): 10096. http://dx.doi.org/10.11609/jott.3168.9.4.10096-10101.

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The low diversity tropical forest is dominated by host specialized wood decaying fungi (Hymenochaetales, Polyporales) with narrow host range. To understand whether or not wood decaying fungi in a highly diverse tropical moist deciduous forest have any kind of host specialization, sporophores of 22 species of wood decaying fungi were recorded on 17 tree species in three seasons viz., pre monsoon, monsoon and post monsoon from the moist deciduous forests of Peechi-Vazhani Wildlife Sanctuary, Kerala, India. Only two of the 22 species with three or more records showed signs of host specialization.

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Tripathy, Biplab, and Tanmoy Mondal. "Socioeconomic Challenges faced by Basin’s People in India." Think India 22, no. 2 (2019): 296–304. http://dx.doi.org/10.26643/think-india.v22i2.8730.

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India is a subcontinent, there huge no of people lived in river basin area. In India there more or less 80% of people directly or indirectly depend on River. Ganga, Brahamputra in North and North East and Mahanadi, Govabori, Krishna, Kaveri, Narmoda, Tapti, Mahi in South are the major river basin in India. There each year due to flood and high tide lots of people are suffered in river basin region in India. These problems destroy the socio economic peace and hope of the people in river basin. There peoples are continuously suffered by lots of difficulties in sort or in long term basis. Few bas

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GODBOLE, RV, and RR KELKAR. "Net Terrestrial Radiative Heat Fluxes over India during Monsoon." MAUSAM 20, no. 1 (2022): 1–10. http://dx.doi.org/10.54302/mausam.v20i1.5421.

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Infrared radiative heat flux and instantaneous rate of temperature change have been computed for Indian, subcontinent for monsoon season by making use of the numerical method developed for the purpose. The effects of water Vapour alone have been considered. It is found that the radiative beat loss near the surface is minimum over the Western Ghats. Over northeast and northwest India, the radiative heat loss is relatively high. Also, the radiative cooling integrated from the surface upto 300 mb indicates a large cooling over northeast and northwest India (>loC per day) and relatively small c

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Pratihary, A. K., S. W. A. Naqvi, G. Narvenkar, et al. "Benthic mineralization and nutrient exchange over the inner continental shelf of western India." Biogeosciences 11, no. 10 (2014): 2771–91. http://dx.doi.org/10.5194/bg-11-2771-2014.

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Abstract. The western Indian continental shelf is one of the most productive coastal systems of the world ocean. This system experiences extreme changes in its oxygen regime, being normoxic from November to May and suboxic (denitrifying)/anoxic from June to October, owing to the biogeochemical response to cyclical monsoonal influence. In order to understand the impact of the seasonally varying oxygen regime on benthic mineralization, nutrient exchange and, in turn, on the shelf ecosystem, we carried out the first ever intact-core incubations during two contrasting seasons – spring intermonsoon

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Hou, Congyu, Zhifeng Yang, and Wei Ouyang. "Surface Runoff and Diffuse Nitrogen Loss Dynamics in a Mixed Land Use Watershed with a Subtropical Monsoon Climate." Processes 11, no. 7 (2023): 1910. http://dx.doi.org/10.3390/pr11071910.

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The surface hydrology and diffuse pollution loading is hypothesized based on the unique characteristics under different rainfall types in watersheds with a subtropical monsoon climate. This study evaluated the effects of different rainfall event intensity on surface runoff and diffuse nitrogen loss in a subtropical watershed located in the latitude range between 22.5° north and 25° north in southern China by adapting the hydrological model SWAT (Soil and Water Assessment Tool). The rainfall events were classified into four categories including light rainfall (LR), moderate rainfall (MR), inten

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Supriya Surachita and Sharat Kumar Palita. "Freshwater fish diversity in hill streams of Saberi River in Eastern Ghats of Odisha, India." Journal of Threatened Taxa 14, no. 4 (2022): 20828–39. http://dx.doi.org/10.11609/jott.7341.14.4.20828-20839.

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Freshwater fish diversity of the hill streams of Saberi River (a major tributary of the Godavari River system) in Koraput district in Eastern Ghats of southern Odisha was studied from September 2017 to August 2019. Sites for the present study were located between Gupteswar Proposed Reserve Forest (PRF) of Odisha on the eastern side, and Kanger Valley National Park of Chhattisgarh on the western side. A total of 36 species of freshwater fish belonging to 24 genera, 13 families and six orders were recorded from the study sites, of which two species are exotic. Family Cyprinidae dominated with 14

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Supriya Surachita and Sharat Kumar Palita. "Freshwater fish diversity in hill streams of Saberi River in Eastern Ghats of Odisha, India." Journal of Threatened Taxa 14, no. 4 (2022): 20828–39. http://dx.doi.org/10.11609/jott.7341.14.4.20828-20839.

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Freshwater fish diversity of the hill streams of Saberi River (a major tributary of the Godavari River system) in Koraput district in Eastern Ghats of southern Odisha was studied from September 2017 to August 2019. Sites for the present study were located between Gupteswar Proposed Reserve Forest (PRF) of Odisha on the eastern side, and Kanger Valley National Park of Chhattisgarh on the western side. A total of 36 species of freshwater fish belonging to 24 genera, 13 families and six orders were recorded from the study sites, of which two species are exotic. Family Cyprinidae dominated with 14

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Chowdhury, Soumyajit, and Rahi Soren. "Butterfly (Lepidoptera: Rhopalocera) Fauna of East Calcutta Wetlands, West Bengal, India." Check List 7, no. 6 (2011): 700. http://dx.doi.org/10.15560/10960.

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East Calcutta Wetlands (ECW), lying east of the city of Kolkata (formerly Calcutta), West Bengal in India, demonstrates the usage of city sewage for traditional practices of fisheries and agriculture. As a Ramsar Site, the wetland demands exploration of its bioresources for better understanding and management of the ecosystem operating therein. Butterflies (Lepidoptera: Rhopalocera) being potent pollinators and ecological indicators, are examined in the present study. The diversity study, conducted for two consecutive years (Jan. 2007-Nov. 2009) in all the three seasons (pre-monsoon, monsoon a

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Huang, Shihming, and Leo Oey. "Malay Archipelago Forest Loss to Cash Crops and Urban Expansion Contributes to Weaken the Asian Summer Monsoon: An Atmospheric Modeling Study." Journal of Climate 32, no. 11 (2019): 3189–205. http://dx.doi.org/10.1175/jcli-d-18-0467.1.

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Abstract In the Malay Archipelago (Indonesia and Malaysia), forest is lost on large scales to cash-crop plantation (oil palm, rubber, and acacia, including fallow lands) and urban expansion. Deforestation changes land surface properties and fluxes, thereby modifying wind and rainfall. Despite the expansive land-cover change over a climatically sensitive region of the tropics, the resulting impact on the Asian summer monsoon has not been studied. Here we study the atmospheric response caused by the island surface change due to deforestation into cash-crop plantations and urban expansion. Using

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