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Journal articles on the topic 'Latitudo'

Author: Grafiati

Published: 10 March 2023

Last updated: 19 July 2025

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1

YUAN, YAN-MEI, and XIAO-FENG XUE. "Two new species of eriophyid mites (Acari: Eriophyidae) from Malaysia." Zootaxa 4613, no. 1 (2019): 152–60. http://dx.doi.org/10.11646/zootaxa.4613.1.8.

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Two new species of the family Eriophyidae (Acari: Eriophyoidea) from Mount Trusmadi, Malaysia, are described and illustrated. They are Neodicrothrix grandcaputus sp. nov. on Stachyurus himalaicus (Stachyuraceae) and Latitudo asiaticis sp. nov. on Psychotria asiatica (Rubiaceae). Both of the two new species are vagrant on the lower leaf surface. No damage to the host was observed. In addition to the description, a key to species of Neodicrothrix is provided.

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Vleck, Carol M., and Jessamyn A. Van Hook. "Absence of Daily Rhythms of Prolactin and Corticosterone in Adélie Penguins Under Continuous Daylight." Condor 104, no. 3 (2002): 667–71. http://dx.doi.org/10.1093/condor/104.3.667.

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Abstract Plasma prolactin and corticosterone levels were measured in free-living Adélie Penguins (Pygoscelis adeliae) at Torgersen Island, Antarctica (64°S latitude), at 4-hr intervals throughout the day during early January 1997 and examined for evidence of a 24-hr rhythm. At this season and latitude, natural daylight is continuous. No significant change in the plasma level of either corticosterone or prolactin was found across the day in this population. In contrast, hormone levels in birds at lower latitudes typically fluctuate between night and day. Our data would not have revealed circadi

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3

Ortenberg, Veronica. "An Unknown Late Anglo-Saxon Text About old St Peter's in Rome." Antiquaries Journal 70, no. 1 (1990): 115–17. http://dx.doi.org/10.1017/s0003581500070347.

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Ms Royal 2. B.V. in the British Library, London, is a tenth-century Psalter from Winchester, possibly from Nunnaminster. On the last folios of this MS (189-190) were added in the late tenth century, miscellaneous computistical entries, which include the years ofChrist, the ages of the world, the ages and generations, the numbering and reckoning of years and the number of years from the Creation to the foundation of Rome. Two texts, the ‘De longitudine mundi’ (fol. 189) and ‘Longitudo, latitudo et altitudo templi et tabernaculum (sic)’ (fols. 189randv) precede, and another, ‘De area Noe’ (fol.

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4

Ni, Qinbiao, Xiaoming Zhai, Guihua Wang, and David P. Marshall. "Random Movement of Mesoscale Eddies in the Global Ocean." Journal of Physical Oceanography 50, no. 8 (2020): 2341–57. http://dx.doi.org/10.1175/jpo-d-19-0192.1.

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AbstractIn this study we track and analyze eddy movement in the global ocean using 20 years of altimeter data and show that, in addition to the well-known westward propagation and slight polarity-based meridional deflections, mesoscale eddies also move randomly in all directions at all latitudes as a result of eddy–eddy interaction. The speed of this random eddy movement decreases with latitude and equals the baroclinic Rossby wave speed at about 25° of latitude. The tracked eddies are on average isotropic at mid- and high latitudes, but become noticeably more elongated in the zonal direction

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Evangelisti, Paolo. "Measures of Faith. Forms and Sizes of Equilibrium from Augustine to the Franciscan Textuality." Picenum Seraphicum - Rivista di studi storici e francescani 37 (December 27, 2023): 7–36. https://doi.org/10.63277/2385-1341/3420.

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Abstract in italianoIl cristianesimo è una religione monoteista, basata sulla teologia della redenzione e chi segue questa religione deve dimostrare di essere un fedele credente, cogliendo le ragioni e i modi che gli permettono di entrare nella comunità dei redenti. I testi patristici, avendo questo obiettivo, definiscono le nuove forme di vita sociale. L’identità cristiana, la sua etica economica, si declinano nel “laboratorio” terrestre dell’amministrazione e della calcolabilità, permettendo la conquista delle dimensioni cognitive, razionali e operative. L’analisi si basa sull’esegesi iconog

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Li, Xiaoyong, Houpu Li, Guohui Liu, Shaofeng Bian, and Chenchen Jiao. "Simplified Expansions of Common Latitudes with Geodetic Latitude and Geocentric Latitude as Variables." Applied Sciences 12, no. 15 (2022): 7818. http://dx.doi.org/10.3390/app12157818.

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Using the symbolic calculation program Mathematica and based on the power series expansions of the common latitude with geodetic latitude as a variable, power series expansions of the common latitude with geocentric latitude as the variable are derived. The coefficients of the two groups of formulas are based on the ellipsoid eccentricity e and the ellipsoid third flattening n, which make the expansions more uniform. Taking the CGCS2000 as an example, numerical analysis is applied to verify the accuracy and reliability of the derived power series expansions. By analyzing and calculating the tr

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Upadhyaya, H. D., K. N. Reddy, Sube Singh, C. L. L. Gowda, Mohd Irshad Ahmed, and Senthil Ramachandran. "Latitudinal patterns of diversity in the world collection of pearl millet landraces at the ICRISAT genebank." Plant Genetic Resources 12, no. 1 (2013): 91–102. http://dx.doi.org/10.1017/s1479262113000348.

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The genebank at ICRISAT, Patancheru, India conserves a total of 19,063 pearl millet landraces from latitudes ranging from 33.00° in the Southern Hemisphere (SH) to 34.37° in the Northern Hemisphere (NH). In the present study, the NH was found to be the major region for growing pearl millet landraces (80.5%). More landraces were found at lower latitudes ( < 20°) in both hemispheres than at higher latitudes. The latitude range of 10°–15° in the NH and 15°–20° in the SH were found to be important source regions for the prevalence of pearl millet, with 39.6% and 13.1% in the world collection of

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8

Gao, PengXin, KeJun Li, and QiXiu Li. "Latitude migration of solar activity at high latitudes." Chinese Science Bulletin 53, no. 1 (2008): 8–11. http://dx.doi.org/10.1007/s11434-007-0422-7.

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Chen, Yiding, Libo Liu, Huijun Le, Hui Zhang, and Ruilong Zhang. "Responding trends of ionospheric F₂-layer to weaker geomagnetic activities." Journal of Space Weather and Space Climate 12 (2022): 6. http://dx.doi.org/10.1051/swsc/2022005.

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Geomagnetic activities frequently occur in varying degrees. Strong geomagnetic activities, which have been widely investigated, occur occasionally; they can cause distinguishable and significant disturbances in the ionosphere. Weaker geomagnetic activities frequently appear, whereas their effects are generally difficult to be distinguished from complex ionospheric variations. Weaker geomagnetic activities play important roles in ionospheric day-to-day variability thus should deserve further attention. In this study, long-term (longer than one solar cycle) measurements of the F2-layer critical

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10

Xie, Gang, Yang Wang, Zhifeng Chen, et al. "Response of Plant Leaf Traits to Environmental Factors in Climax Communities at Varying Latitudes in Karst Regions." Plants 14, no. 2 (2025): 183. https://doi.org/10.3390/plants14020183.

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Exploring the changes in plant functional traits and their relationship with the environment in karst climax communities across different latitudes can enhance our understanding of how these communities respond to environmental gradients. In this study, we focus on climax karst climax plant communities in Guizhou Province, China. We selected three sample sites located at varying latitudes and analyzed the variations in functional traits of the plant communities at these latitudes. Additionally, we examined the relationship between functional traits and environmental factors, integrating specie

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Myllys, M., N. Partamies, and L. Juusola. "Latitude dependence of long-term geomagnetic activity and its solar wind drivers." Annales Geophysicae 33, no. 5 (2015): 573–81. http://dx.doi.org/10.5194/angeo-33-573-2015.

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Abstract. To validate the usage of global indices in studies of geomagnetic activity, we have examined the latitude dependence of geomagnetic variations in Fennoscandia and Svalbard from 1994 to 2010. Daily standard deviation (SD) values of the horizontal magnetic field have been used as a measure of the ground magnetic disturbance level. We found that the timing of the geomagnetic minimum depends on the latitude region: corresponding to the minimum of sunspot cycle 22 (in 1996), the geomagnetic minimum occurred between the geomagnetic latitudes 57–61° in 1996 and at the latitudes 64–67° in 19

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Sanchez-Marroquin, A., O. Arnalds, K. J. Baustian-Dorsi, et al. "Iceland is an episodic source of atmospheric ice-nucleating particles relevant for mixed-phase clouds." Science Advances 6, no. 26 (2020): eaba8137. http://dx.doi.org/10.1126/sciadv.aba8137.

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Ice-nucleating particles (INPs) have the potential to remove much of the liquid water in climatically important mid- to high-latitude shallow supercooled clouds, markedly reducing their albedo. The INP sources at these latitudes are very poorly defined, but it is known that there are substantial dust sources across the high latitudes, such as Iceland. Here, we show that Icelandic dust emissions are sporadically an important source of INPs at mid to high latitudes by combining ice-nucleating active site density measurements of aircraft-collected Icelandic dust samples with a global aerosol mode

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Garvey, James E., and Elizabeth A. Marschall. "Understanding latitudinal trends in fish body size through models of optimal seasonal energy allocation." Canadian Journal of Fisheries and Aquatic Sciences 60, no. 8 (2003): 938–48. http://dx.doi.org/10.1139/f03-083.

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For fish at high latitudes, short growing seasons should constrain size-at-age, although the converse often occurs. We used a dynamic state variable model to find energy allocation strategies to length, fat, and ovaries that maximize expected egg production of largemouth bass (Micropterus salmoides). We determined how latitudes and rations affect optimal allocation and then simulated growth using optimal strategies. A theoretical reciprocal transplant explored how latitude-specific optimal strategies affected growth at other latitudes. At low ration, allocation and growth were similar among la

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Wos, Guillaume, Nermeen R. Amer, Andrzej Antoł, Robby Stoks, and Szymon Sniegula. "Warming and latitude shape the non-consumptive effects of native and invasive alien crayfish predators on damselfly prey." NeoBiota 98 (April 14, 2025): 223–45. https://doi.org/10.3897/neobiota.98.141133.

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There is increasing concern that the effects of biological invasions may be magnified by other human-induced global changes. Here, we compare the non-consumptive effects imposed by invasive vs. native predators and how these (differential) responses to both predator types depend on warming and prey latitude. We raised damselfly larvae from central- and high-latitudes in incubators under two temperatures (current [20 °C] and warming [24 °C]) and further exposed them to one of three predator cues: noble (native), signal (invasive at both latitudes) and spiny-cheek (invasive at central- but absen

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Wos, Guillaume, Nermeen R. Amer, Andrzej Antoł, Robby Stoks, and Szymon Sniegula. "Warming and latitude shape the non-consumptive effects of native and invasive alien crayfish predators on damselfly prey." NeoBiota 98 (April 14, 2025): 223–45. https://doi.org/10.3897/neobiota.98.141133.

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There is increasing concern that the effects of biological invasions may be magnified by other human-induced global changes. Here, we compare the non-consumptive effects imposed by invasive vs. native predators and how these (differential) responses to both predator types depend on warming and prey latitude. We raised damselfly larvae from central- and high-latitudes in incubators under two temperatures (current [20 °C] and warming [24 °C]) and further exposed them to one of three predator cues: noble (native), signal (invasive at both latitudes) and spiny-cheek (invasive at central- but absen

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16

De La Torre Castro, Elena, Tina Jurkat-Witschas, Armin Afchine, et al. "Differences in microphysical properties of cirrus at high and mid-latitudes." Atmospheric Chemistry and Physics 23, no. 20 (2023): 13167–89. http://dx.doi.org/10.5194/acp-23-13167-2023.

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Abstract. Despite their proven importance for the atmospheric radiative energy budget, the effect of cirrus on climate and the magnitude of their modification by human activity is not well quantified. Besides anthropogenic pollution sources on the ground, aviation has a large local effect on cirrus microphysical and radiative properties via the formation of contrails and their transition to contrail cirrus. To investigate the anthropogenic influence on natural cirrus, we compare the microphysical properties of cirrus measured at mid-latitude (ML) regions (<60∘ N) that are often affected by

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17

KALSI, S. R., and S. R. HALDER. "Satellite observations of interaction between tropics and mid-latitudes." MAUSAM 43, no. 1 (2021): 59–64. http://dx.doi.org/10.54302/mausam.v43i1.3318.

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In certain seasons and over certain locations, the mid-latitude westerlies invade subtropical and tropical areas. Short wave perturbations moving in the broad mid-latitude westerlies amplify the. long wave troughs creating new baroclinic zones in relatively southern latitudes. These. baroclinic zones Interact .with the low-latitude circulations thus leading to development of new circulation pattern .In which low level easterlies extend northward over the Peninsula, central and northwest .India. The paper describes the role of short waves in the interaction between tropics and mid-latitudes and

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18

Chetverikov, Philipp E., Charnie Craemer, Vladimir D. Gankevich, et al. "Molecular Phylogenetics and Light Microscopy Reveal “True” and “False” Calacarines and Novel Genital Structures in Gall Mites (Acariformes, Eriophyoidea)." Forests 15, no. 2 (2024): 329. http://dx.doi.org/10.3390/f15020329.

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Gall mites (Eriophyoidea) are cosmopolitan microscopic phytoparasites that often transmit viruses and induce callogenesis. The tribe Calacarini is diagnosed by a set of plesiomorphic and homoplastic traits, including elimination of setae sc shared with other lineages of Eriophyoidea. We reviewed data on the generic diversity of calacarines, revised the concept of the type genus Calacarus Keifer 1940, and proposed three zones (MZ, SMZ, LZ) in the prodorsal shields of calacarines to simplify descriptions of their shield patterns. We describe three new calacarine species (Calacarus baviensisn. sp

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19

Chen, Yiding, Libo Liu, Huijun Le, and Hui Zhang. "Interhemispheric conjugate effect in longitude variations of mid-latitude ion density." Journal of Space Weather and Space Climate 9 (2019): A40. http://dx.doi.org/10.1051/swsc/2019039.

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Earlier incoherent scatter radar measurements revealed upward topside ion fluxes in the summer and downward fluxes in the winter at mid-latitudes at night; a summer to winter interhemispheric coupling was accordingly inferred. However, this interhemispheric coupling through the plasmasphere is difficult to confirm directly from observations. A possible result induced by this coupling is interhemispheric conjugacy of the mid-latitude ionosphere. In this paper, interhemispheric conjugate effect in longitude variations of mid-latitude total ion density (Ni) is presented, for the first time, using

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20

Sun, Mingchen, Xiang Dong, Qinglin Zhu, Xuan Cheng, Hongguang Wang, and Jiaji Wu. "Comparison and Analysis of Stellar Occultation Simulation Results and SABER-Satellite-Measured Data in Near Space." Remote Sensing 14, no. 19 (2022): 5065. http://dx.doi.org/10.3390/rs14195065.

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In this study, we analyze the accuracy of the stellar occultation technique to detect the oxygen number density and temperature in near space. Based on the validation of the algorithm related to stellar occultation using a single wavelength of 762 nm, the simulation and inversion are performed using the oxygen absorption A-band, and the results are compared with SABER observations to calculate the deviation. Then, the distribution of the detection accuracy with wavelength, latitude, and altitude is analyzed. The results show that the radiant transmittance of the basic observation varies signif

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Karpachev, Alexander. "Sub-Auroral, Mid-Latitude, and Low-Latitude Troughs during Severe Geomagnetic Storms." Remote Sensing 13, no. 3 (2021): 534. http://dx.doi.org/10.3390/rs13030534.

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The dynamics of ionospheric troughs during intense geomagnetic storms is considered in this paper. The study is based on electron density measurements at CHAMP satellite altitudes of 405–465 km in the period from 2000 to 2002. A detailed analysis of four storms with Kp from 5+ to 9− is presented. Three troughs were identified: sub-auroral, mid-latitude, and low-latitude. The sub-auroral trough is usually defined as the main ionospheric trough (MIT). The mid-latitude trough is observed equatorward of the MIT and is associated with the magnetospheric ring current; therefore, it is named the ring

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Lan, Ting, Chunhua Jiang, Guobin Yang, Fei Sun, Zhenyun Xu, and Zhong Liu. "Latitudinal Differences in Spread F Characteristics at Asian Longitude Sector during the Descending Phase of the 24th Solar Cycle." Universe 8, no. 9 (2022): 485. http://dx.doi.org/10.3390/universe8090485.

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By using ionosonde data recorded at Chiang Mai (18.8° N, 98.9° E, magnetic latitude is 9.1° N), Puer (22.7° N, 101.1° E, magnetic latitude is 12.9° N), and Leshan (29.6° N, 103.7° E, magnetic latitude is 19.8° N), the statistical features of different types of spread F (SF) occurrence at low and middle latitudes were analyzed in this study. The results showed that the SF occurrence had obvious local time, latitude, and SF-type variations. The range spread F (RSF) occurrence in equinox months decreased with the increase in latitude, while the frequency spread F’s (FSF) occurrence rate in the su

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Yizengaw, E., E. A. Essex, and R. Birsa. "The Southern Hemisphere and equatorial region ionization response for a 22 September 1999 severe magnetic storm." Annales Geophysicae 22, no. 8 (2004): 2765–73. http://dx.doi.org/10.5194/angeo-22-2765-2004.

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Abstract. The ionospheric storm evolution process was monitored during the 22 September 1999 magnetic storm over the Australian eastern region, through measurements of the ionospheric Total Electron Content (TEC) from seven Global Positioning Systems (GPS) stations. The spatial and temporal variations of the ionosphere were analysed as a time series of TEC maps. Results of our analysis show that the main ionospheric effect of the storm under consideration are: the long lasting negative storm effect during a magnetic storm at mid-latitude regions; the strong, positive disturbances during the st

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Jensen, J. W., and B. G. Fejer. "Longitudinal dependence of middle and low latitude zonal plasma drifts measured by DE-2." Annales Geophysicae 25, no. 12 (2007): 2551–59. http://dx.doi.org/10.5194/angeo-25-2551-2007.

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Abstract. We used ion drift observations from the DE-2 satellite to study for the first time the longitudinal variations of middle and low latitude F region zonal plasma drifts during quiet and disturbed conditions. The quiet-time middle latitude drifts are predominantly westward; the low latitude drifts are westward during the day and eastward at night. The daytime quiet-time drifts do not change much with longitude; the nighttime drifts have strong season dependent longitudinal variations. In the dusk-premidnight period, the equinoctial middle latitude westward drifts are smallest in the Eur

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Lin, Jiaqi, Feng Wang, Linhua Deng, Hui Deng, Ying Mei, and Yangfan Xie. "The Temporal and Spatial Behaviors of CME Occurrence Rate at Different Latitudes." Astrophysical Journal 932, no. 1 (2022): 62. http://dx.doi.org/10.3847/1538-4357/ac6f54.

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Abstract The statistical study of the coronal mass ejections (CMEs) is a hot topic in solar physics. To further reveal the temporal and spatial behaviors of the CMEs at different latitudes and heights, we analyzed the correlation and phase relationships between the occurrence rate of CMEs, the coronal brightness index (CBI), and the 10.7 cm solar radio flux (F10.7). We found that the occurrence rate of the CMEs correlates with the CBI relatively stronger at high latitudes (≥60°) than at low latitudes (≤50°). At low latitudes, the occurrence rate of the CMEs correlates relatively weaker with th

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Siew, Peter Yu Feng, Camille Li, Stefan Pieter Sobolowski, Etienne Dunn-Sigouin, and Mingfang Ting. "Circulation responses to surface heating and implications for polar amplification." Weather and Climate Dynamics 5, no. 3 (2024): 985–96. http://dx.doi.org/10.5194/wcd-5-985-2024.

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Abstract. A seminal study by Hoskins and Karoly (1981) explored the atmospheric circulation response to tropospheric heating perturbations at low latitudes and midlatitudes. Here we revisit and extend their study by investigating the circulation and temperature response to low, middle, and high latitude surface heating using an idealised moist grey radiation model. Our results corroborate previous findings showing that heating perturbations at low latitudes and midlatitudes are balanced by different time-mean circulation responses – upward motion and horizontal-temperature advection, respectiv

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de Jong, Jelte T. A., Brian Yanny, Hans-Walter Rix, Eric F. Bell, and Andrew E. Dolphin. "Mapping low-latitude stellar substructure with SEGUE photometry." Proceedings of the International Astronomical Union 4, S254 (2008): 121–26. http://dx.doi.org/10.1017/s1743921308027488.

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AbstractEncircling the Milky Way at low latitudes, the Low Latitude Stream is a large stellar structure, the origin of which is as yet unknown. As part of the SEGUE survey, several photometric scans have been obtained that cross the Galactic plane, spread over a longitude range of 50° to 203°. These data allow a systematic study of the structure of the Galaxy at low latitudes, where the Low Latitude Stream resides. We apply colour-magnitude diagram fitting techniques to map the stellar (sub)structure in these regions, enabling the detection of overdensities with respect to smooth models. These

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Tian, Wenshou, Yuanpu Li, Fei Xie, et al. "The relationship between lower-stratospheric ozone at southern high latitudes and sea surface temperature in the East Asian marginal seas in austral spring." Atmospheric Chemistry and Physics 17, no. 11 (2017): 6705–22. http://dx.doi.org/10.5194/acp-17-6705-2017.

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Abstract. Using satellite observations, reanalysis data, and model simulations, this study investigates the effect of sea surface temperature (SST) on interannual variations of lower-stratospheric ozone at southern high latitudes in austral spring. It is found that the SST variations across the East Asian marginal seas (5° S–35° N, 100–140° E) rather than the tropical eastern Pacific Ocean, where ENSO occurs, have the most significant correlation with the southern high-latitude lower-stratospheric ozone changes in austral spring. Further analysis reveals that planetary waves originating over t

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Laurel, Benjamin J., and Ian R. Bradbury. "“Big” concerns with high latitude marine protected areas (MPAs): trends in connectivity and MPA size." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 12 (2006): 2603–7. http://dx.doi.org/10.1139/f06-151.

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The success of marine protected areas (MPAs) as fisheries management tools in tropical latitudes has generated interest in their applicability and potential elsewhere. Here we suggest that dispersal and gene flow in marine fish populations (a primary biological consideration for marine reserve design) increases with latitude. For example, north temperate fish species at latitudes between 40° and 45° had about three times greater dispersal potential (planktonic larval duration (PLD), n = 96 species) and genetic homogeneity (FST, n = 100 species) than fish species near equatorial regions. Using

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Singh, Jagdev, M. Priyal, G. Sindhuja, and B. Ravindra. "Variations in Ca-K line profiles and Ca-K line features as a function of latitude and solar cycle during the 20th century." Proceedings of the International Astronomical Union 13, S340 (2018): 23–26. http://dx.doi.org/10.1017/s1743921318001540.

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AbstractThe analysis of the Ca-K line spectra as a function of latitude and integrated over the visible disk obtained during the period of 1989–2011 at the Kodaikanal Solar Tower Telescope shows that the FWHM of the K1 distribution at different latitudes varies by negligible amount at about 60° latitude whereas it varies significantly at other latitudes. Findings, especially the fewer variations in mid-latitude belts as compared to polar regions and complex variation in the shift in the activity around 60° latitude belt, will have important implications on the modeling of solar dynamos. Furthe

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Qu, Tao, Lifeng Zhang, Yuan Wang, Xu Wang, and Jiping Guan. "Seasonal Variations in the Vertical Wavenumber Spectra of Stratospheric Gravity Waves in the Asian Monsoon Region Derived from COSMIC-2 Data." Remote Sensing 14, no. 24 (2022): 6336. http://dx.doi.org/10.3390/rs14246336.

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We used the Constellation Observing System for Meteorology, Ionosphere, and Climate-2 (COSMIC-2) dry temperature profile data from December 2019 to November 2021 to study the vertical wavenumber spectra of the potential energy of stratospheric gravity waves (GWs Ep) in the Asian monsoon region (15–45°N, 70–150°E). The GW Ep decreases with increasing vertical wavenumber, and the spectral slope varies with wavenumber. The spectral slope becomes smaller over a wavenumber range of 0.1–0.45 km−1, and larger from 0.45–1 km−1, with increasing wavenumber. The energy density distribution at middle and

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Zhang, Zebin, Jie Jiang, and Haowei Zhang. "A Potential New Mechanism for the Butterfly Diagram of the Solar Cycle: Latitude-dependent Radial Flux Transport." Astrophysical Journal Letters 941, no. 1 (2022): L3. http://dx.doi.org/10.3847/2041-8213/aca47a.

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Abstract The butterfly diagram of the solar cycle is the equatorward migration of the emergence latitudes of sunspots as the solar cycle evolves. Revealing the mechanism for the butterfly diagram is essential for understanding the solar and stellar dynamo. The equatorward meridional flow at the base of the convection zone (CZ) was believed to be responsible for the butterfly diagram. However, helioseismological studies indicate controversial forms of the flow, and even present poleward flow at the base of the CZ, which poses a big challenge to the widely accepted mechanism. This motivates us t

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Longobardi, P., A. Montenegro, H. Beltrami, and M. Eby. "Spatial scale dependency of the modelled climatic response to deforestation." Biogeosciences Discussions 9, no. 10 (2012): 14639–87. http://dx.doi.org/10.5194/bgd-9-14639-2012.

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Abstract. Deforestation is associated with increased atmospheric CO2 and alterations to the surface energy and mass balances that can lead to local and global climate changes. Previous modelling studies show that the global surface air temperature (SAT) response to deforestation depends on latitude, with most simulations showing that high latitude deforestation results in cooling, low latitude deforestation causes warming and that the mid latitude response is mixed. These earlier conclusions are based on simulated large scale land cover change, with complete removal of trees from whole latitud

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Palter, Jaime B., Stephen M. Griffies, Bonita L. Samuels, Eric D. Galbraith, Anand Gnanadesikan, and Andreas Klocker. "The Deep Ocean Buoyancy Budget and Its Temporal Variability." Journal of Climate 27, no. 2 (2014): 551–73. http://dx.doi.org/10.1175/jcli-d-13-00016.1.

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Abstract Despite slow rates of ocean mixing, observational and modeling studies suggest that buoyancy is redistributed to all depths of the ocean on surprisingly short interannual to decadal time scales. The mechanisms responsible for this redistribution remain poorly understood. This work uses an Earth system model to evaluate the global steady-state ocean buoyancy (and related steric sea level) budget, its interannual variability, and its transient response to a doubling of CO2 over 70 years, with a focus on the deep ocean. At steady state, the simple view of vertical advective–diffusive bal

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Jin, Yu-Song, Yu-Kun Hu, Jing Wang, et al. "Diversity of Understory Communities in Boreal Forests: Influences of Forest Type, Latitude, and Spatial Scale." Forests 10, no. 11 (2019): 1003. http://dx.doi.org/10.3390/f10111003.

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Understory vegetation hosts high biodiversity and plays a critical role in the ecosystem processes of boreal forests. However, the drivers of understory plant diversity in this high-latitude ecosystem remain uncertain. To investigate the influences of forest type and latitude on understory beta diversity at different scales, we quantified the species composition of Vaccinium uliginosum Linnaeus communities under broadleaf and coniferous forests at two latitudes at the quadrat (2 × 2 m) and plot (10 × 10 m) scales in the Greater Xing’an Mountains, NE China. At the quadrat scale, species alpha d

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Dikpati, Mausumi, Bernadett Belucz, Robertus Erdélyi, Peter A. Gilman, Scott W. McIntosh, and Breno Raphaldini. "Magnetohydrodynamic Instabilities of Double Magnetic Bands in a Shallow-water Tachocline Model. II. Teleconnection Between High- and Low-latitude Bands and Across Equator." Astrophysical Journal 977, no. 1 (2024): 99. https://doi.org/10.3847/1538-4357/ad8b50.

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Abstract The “extended solar cycle” indicates that there are two deeply seated toroidal magnetic field bands in each hemisphere. Both bands migrate equatorward as a sunspot cycle progresses. Here, we examine the consequences of global MHD instability of this migrating double-band system in tachocline on the latitudinal structure of unstable modes, which are essentially MHD Rossby waves. We find that latitude-location, latitude-separation, and the amplitude of the bands strongly influence the latitudinal structure and growth rates of the unstable modes of both symmetries about the equator. Thes

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Lu, Xinmin, Minyan He, Saichun Tang, et al. "Herbivory may promote a non-native plant invasion at low but not high latitudes." Annals of Botany 124, no. 5 (2019): 819–27. http://dx.doi.org/10.1093/aob/mcz121.

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Abstract Background and Aims The strengths of biotic interactions such as herbivory are expected to decrease with increasing latitude for native species. To what extent this applies to invasive species and what the consequences of this variation are for competition among native and invasive species remain unexplored. Here, herbivore impacts on the invasive plant Alternanthera philoxeroides and its competition with the native congener A. sessilis were estimated across latitudes in China. Methods An common garden experiment spanning ten latitudinal degrees was conducted to test how herbivore imp

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Golub, Gennadii, Nataliya Tsyvenkova, Volodymyr Nadykto, et al. "Determining the influence of mounting angle on the average annual efficiency of fixed solar photovoltaic modules." Energy-saving technologies and equipment 2, no. 8 (128) (2024): 26–37. http://dx.doi.org/10.15587/1729-4061.2024.300485.

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The object of this study is photovoltaic modules with different options for the angle of their installation to the horizon at different geographical latitudes. The scientific problem to solve was determining the dependence of the average annual efficiency of solar photovoltaic modules on the mounting angle of photovoltaic modules and the value of geographical latitude. It has been proven that the efficiency of installation of solar photovoltaic modules can be increased by reducing the angle of their inclination to the horizon depending on the value of the geographical latitude at which they ar

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Golub, Gennadii, Nataliya Tsyvenkova, Volodymyr Nadykto, et al. "Determining the influence of seasonal tilt angle on the efficiency of fixed solar photovoltaic modules." Energy-saving technologies and equipment 3, no. 8 (129) (2024): 55–62. http://dx.doi.org/10.15587/1729-4061.2024.306364.

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The object of this study is photovoltaic modules with different seasonal tilt angles at different geographical latitudes. The average annual efficiency of photovoltaic modules with different seasonal angles set at different geographical latitudes has been determined as the annual weighted average value of the cosine of the angle of incidence of solar rays on the plane of the photovoltaic module. The influence of seasonal tilt angles of photovoltaic modules at different geographical latitudes on their average annual efficiency was analyzed. Approximate values of the seasonal tilt angles of phot

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Chandran, A., and R. L. Collins. "Stratospheric sudden warming effects on winds and temperature in the middle atmosphere at middle and low latitudes: a study using WACCM." Annales Geophysicae 32, no. 7 (2014): 859–74. http://dx.doi.org/10.5194/angeo-32-859-2014.

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Abstract. A stratospheric sudden warming (SSW) is a dynamical phenomenon of the wintertime stratosphere caused by the interaction between planetary Rossby waves propagating from the troposphere and the stratospheric zonal-mean flow. While the effects of SSW events are seen predominantly in high latitudes, they can also produce significant changes in middle and low latitude temperature and winds. In this study we quantify the middle and low latitude effects of SSW events on temperature and zonal-mean winds using a composite of SSW events between 1988 and 2010 simulated with the specified dynami

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Isachsen, P. E., J. H. LaCasce, and J. Pedlosky. "Rossby Wave Instability and Apparent Phase Speeds in Large Ocean Basins." Journal of Physical Oceanography 37, no. 5 (2007): 1177–91. http://dx.doi.org/10.1175/jpo3054.1.

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Abstract The stability of baroclinic Rossby waves in large ocean basins is examined, and the quasigeostrophic (QG) results of LaCasce and Pedlosky are generalized. First, stability equations are derived for perturbations on large-scale waves, using the two-layer shallow-water system. These equations resemble the QG stability equations, except that they retain the variation of the internal deformation radius with latitude. The equations are solved numerically for different initial conditions through eigenmode calculations and time stepping. The fastest-growing eigenmodes are intensified at high

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Luan, X., L. Liu, W. Wan, J. Lei, and T. Yu. "A climatology of the F-layer equivalent winds derived from ionosonde measurements over two decades along the 120°-150°E sector." Annales Geophysicae 22, no. 8 (2004): 2785–96. http://dx.doi.org/10.5194/angeo-22-2785-2004.

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Abstract. The vertical equivalent winds (VEWs) at the F-layer are analyzed along the 120°-150°E longitude sector with an emphasis on their latitudinal dependence. The VEWs are derived from the monthly median data of fourteen ionosonde stations over two decades. The results show that the VEWs have considerable dependences on the magnetic latitude with an approximate symmetry about the magnetic equator. They are mostly controlled by the electric field drifts in the magnetic equatorial region, and shift to be mostly contributed by neutral winds at mid-latitudes. The relative contribution of the t

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Beaton, Laura L. "A latitudinal gradient in herbivore resistance in common sunflower, Helianthus annuus (Asteraceae)." Plant Ecology and Evolution 153, no. 2 (2020): 199–207. http://dx.doi.org/10.5091/plecevo.2020.1711.

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Background and aims – The intensity of herbivory is expected to decline with increasing latitude. As herbivory varies spatially and over time, a reliable method of assessing the intensity of herbivory is to examine the degree of herbivore resistance in the plant community. Latitudinal gradients in resistance to herbivory were examined in wild populations of common sunflower, Helianthus annuus. Materials and methods – Seeds from 23 different latitudes, ranging from 20 to 44°N, were obtained from the USDA’s Germplasm Resources Information Network. Plants were grown in a greenhouse for nine weeks

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Beaton, Laura. "A latitudinal gradient in herbivore resistance in common sunflower, Helianthus annuus (Asteraceae)." Plant Ecology and Evolution 153, no. (2) (2020): 199–207. https://doi.org/10.5091/plecevo.2020.1711.

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<b>Background and aims</b> – The intensity of herbivory is expected to decline with increasing latitude. As herbivory varies spatially and over time, a reliable method of assessing the intensity of herbivory is to examine the degree of herbivore resistance in the plant community. Latitudinal gradients in resistance to herbivory were examined in wild populations of common sunflower, <em>Helianthus annuus</em>. <b>Materials and methods</b> – Seeds from 23 different latitudes, ranging from 20 to 44°N, were obtained from the USDA's Germplasm Resources Information Network. Plants were grown in a gr

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Hiraiwa, T. "Proposal on the Modification of Sailing Calculations." Journal of Navigation 40, no. 1 (1987): 138–48. http://dx.doi.org/10.1017/s0373463300000369.

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Methods of calculating the course and the distance between two points from a knowledge of their latitudes and longitudes, or calculating the latitude and the longitude of the arrival point from the course and the distance from a known departure point, are called sailings. Middle-latitude sailing and Mercator sailing have been widely used.

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Wang, Yang, Zuhong Fan, Tian Tian, Ying Deng, and Hong Zhao. "Leaf–Soil Carbon, Nitrogen, and Phosphorus Ecological Stoichiometry and Adaptation in Karst Plant Communities." Sustainability 17, no. 13 (2025): 5790. https://doi.org/10.3390/su17135790.

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In order to elucidate the factors regulating nutrient dynamics in plant–soil interactions across various latitudes within the karst climax community, this study focused on the karst forest climax community in Guizhou Province, Southwest China. We analyzed and compared the differences in carbon, nitrogen, and phosphorus content, as well as stoichiometry, in plant leaves and soils under various growing conditions. Additionally, redundancy analyses were conducted to investigate the stoichiometric correlations between plants and soil. The research findings indicate the following: (1) Leaf carbon c

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Fragoso, Yara Dadalti, Tarso Adoni, Sandra Maria Garcia de Almeida, et al. "Multiple sclerosis in South America: month of birth in different latitudes does not seem to interfere with the prevalence or progression of the disease." Arquivos de Neuro-Psiquiatria 71, no. 9A (2013): 573–79. http://dx.doi.org/10.1590/0004-282x20130098.

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Objective To assess whether the month of birth in different latitudes of South America might influence the presence or severity of multiple sclerosis (MS) later in life. Methods Neurologists in four South American countries working at MS units collected data on their patients' month of birth, gender, age, and disease progression. Results Analysis of data from 1207 MS patients and 1207 control subjects did not show any significant variation in the month of birth regarding the prevalence of MS in four latitude bands (0–10; 11–20; 21–30; and 31–40 degrees). There was no relationship between the m

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Camargo, George, and Erich Fischer. "Primeiro registro do morcego Mimon crenulatum (Phyllostomidae) no Pantanal, sudoeste do Brasil." Biota Neotropica 5, no. 1 (2005): 181–84. http://dx.doi.org/10.1590/s1676-06032005000100017.

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Espécies do gênero Mimon Gray, 1847, ocorrem desde o México até a Bolívia central e sudeste do Brasil, entre as latitudes 22º N e 25º S. Aproximadamente entre 14e 25º S de latitude, a ocorrência conhecida de Mimon é restrita ao leste brasileiro, na Mata Atlântica. Apenas em latitudes menores que 14º S as espécies de Mimon adicionalmente ocorrem na região central e oeste da América do Sul, na Amazônia, Cerrado e Caatinga. Mimon crenulatum (E. Geoffroy, 1810) é localmente rara porém ocorre amplamente dentro dos limites de distribuição do gênero. Reportamos aqui a ocorrência de Mimon crenulatum a

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Ternullo, Maurizio. "The Butterfly diagram leopard skin pattern." Proceedings of the International Astronomical Union 6, S273 (2010): 195–99. http://dx.doi.org/10.1017/s1743921311015237.

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AbstractA time-latitude diagram where spotgroups are given proportional relevance to their area is presented. The diagram reveals that the spotted area distribution is higly dishomogeneous, most of it being concentrated in few, small portions (“knots”) of the Butterfly Diagram; because of this structure, the BD may be properly described as a cluster of knots. The description, assuming that spots scatter around the “spot mean latitude” steadily drifting equatorward, is challenged. Indeed, spots cluster around at as many latitudes as knots; a knot may appear at either lower or higher latitudes t

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Dunn, Peter O., Kevin J. Thusius, Kevin Kimber, and David W. Winkler. "Geographic and Ecological Variation in Clutch Size of Tree Swallows." Auk 117, no. 1 (2000): 215–21. http://dx.doi.org/10.1093/auk/117.1.215.

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AbstractIn many birds, populations breeding at higher latitudes have larger clutch sizes. It has been hypothesized that this relationship results from the greater availability of food at higher latitudes. We examined geographic variation in clutch size of Tree Swallows (Tachycineta bicolor) in relation to latitude, longitude, laying date, breeding density, elevation, and summer actual evapotranspiration (AE). AE is a measure of terrestrial primary productivity, and we assumed that it was correlated with resource abundance. Clutch size data were compiled from nest records throughout the breedin

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