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Climatology

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https://www.readbyqxmd.com/read/28725047/warming-effects-on-the-urban-hydrology-in-cold-climate-regions
#1
L Järvi, C S B Grimmond, J P McFadden, A Christen, I B Strachan, M Taka, L Warsta, M Heimann
While approximately 338 million people in the Northern hemisphere live in regions that are regularly snow covered in winter, there is little hydro-climatologic knowledge in the cities impacted by snow. Using observations and modelling we have evaluated the energy and water exchanges of four cities that are exposed to wintertime snow. We show that the presence of snow critically changes the impact that city design has on the local-scale hydrology and climate. After snow melt, the cities return to being strongly controlled by the proportion of built and vegetated surfaces...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724987/the-asymmetric-impact-of-global-warming-on-us-drought-types-and-distributions-in-a-large-ensemble-of-97-hydro-climatic-simulations
#2
Shengzhi Huang, Guoyong Leng, Qiang Huang, Yangyang Xie, Saiyan Liu, Erhao Meng, Pei Li
Projection of future drought is often involved large uncertainties from climate models, emission scenarios as well as drought definitions. In this study, we investigate changes in future droughts in the conterminous United States based on 97 1/8 degree hydro-climate model projections. Instead of focusing on a specific drought type, we investigate changes in meteorological, agricultural, and hydrological drought as well as the concurrences. Agricultural and hydrological droughts are projected to become more frequent with increase in global mean temperature, while less meteorological drought is expected...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28713200/spatio-temporal-precipitation-climatology-over-complex-terrain-using-a-censored-additive-regression-model
#3
Reto Stauffer, Georg J Mayr, Jakob W Messner, Nikolaus Umlauf, Achim Zeileis
Flexible spatio-temporal models are widely used to create reliable and accurate estimates for precipitation climatologies. Most models are based on square root transformed monthly or annual means, where a normal distribution seems to be appropriate. This assumption becomes invalid on a daily time scale as the observations involve large fractions of zero observations and are limited to non-negative values. We develop a novel spatio-temporal model to estimate the full climatological distribution of precipitation on a daily time scale over complex terrain using a left-censored normal distribution...
June 15, 2017: International Journal of Climatology: a Journal of the Royal Meteorological Society
https://www.readbyqxmd.com/read/28710418/the-best-alternative-for-estimating-reference-crop-evapotranspiration-in-different-sub-regions-of-mainland-china
#4
Lingling Peng, Yi Li, Hao Feng
Reference crop evapotranspiration (ET o) is a critically important parameter for climatological, hydrological and agricultural management. The FAO56 Penman-Monteith (PM) equation has been recommended as the standardized ET o (ET o,s) equation, but it has a high requirements of climatic data. There is a practical need for finding a best alternative method to estimate ET o in the regions where full climatic data are lacking. A comprehensive comparison for the spatiotemporal variations, relative errors, standard deviations and Nash-Sutcliffe efficacy coefficients of monthly or annual ET o,s and ET o,i (i = 1, 2, …, 10) values estimated by 10 selected methods (i...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28706247/the-unprecedented-2015-16-tasman-sea-marine-heatwave
#5
Eric C J Oliver, Jessica A Benthuysen, Nathaniel L Bindoff, Alistair J Hobday, Neil J Holbrook, Craig N Mundy, Sarah E Perkins-Kirkpatrick
The Tasman Sea off southeast Australia exhibited its longest and most intense marine heatwave ever recorded in 2015/16. Here we report on several inter-related aspects of this event: observed characteristics, physical drivers, ecological impacts and the role of climate change. This marine heatwave lasted for 251 days reaching a maximum intensity of 2.9 °C above climatology. The anomalous warming is dominated by anomalous convergence of heat linked to the southward flowing East Australian Current. Ecosystem impacts range from new disease outbreaks in farmed shellfish, mortality of wild molluscs and out-of-range species observations...
July 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/28694449/future-changes-in-the-climatology-of-the-great-plains-low-level-jet-derived-from-fine-resolution-multi-model-simulations
#6
Ying Tang, Julie Winkler, Shiyuan Zhong, Xindi Bian, Dana Doubler, Lejiang Yu, Claudia Walters
The southerly Great Plains low-level jet (GPLLJ) is one of the most significant circulation features of the central U.S. linking large-scale atmospheric circulation with the regional climate. GPLLJs transport heat and moisture, contribute to thunderstorm and severe weather formation, provide a corridor for the springtime migration of birds and insects, enhance wind energy availability, and disperse air pollution. We assess future changes in GPLLJ frequency using an eight member ensemble of dynamically-downscaled climate simulations for the mid-21st century...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28685164/competition-induced-starvation-drives-large-scale-population-cycles-in-antarctic-krill
#7
Alexey B Ryabov, André M de Roos, Bettina Meyer, So Kawaguchi, Bernd Blasius
Antarctic krill (Euphausia superba) - one of the most abundant animal species on Earth - exhibits a 5-6 year population cycle, with oscillations in biomass exceeding one order of magnitude. Previous studies have postulated that the krill cycle is induced by periodic climatological factors, but these postulated drivers neither show consistent agreement, nor are they supported by quantitative models. Here, using data analysis complemented with modeling of krill ontogeny and population dynamics, we identify intraspecific competition for food as the main driver of the krill cycle, while external climatological factors possibly modulate its phase and synchronization over large scales...
July 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28663701/determining-spatio-temporal-distribution-of-bee-forage-species-of-al-baha-region-based-on-ground-inventorying-supported-with-gis-applications-and-remote-sensed-satellite-image-analysis
#8
Nuru Adgaba, Ahmed Alghamdi, Rachid Sammoud, Awraris Shenkute, Yilma Tadesse, Mahammad J Ansari, Deepak Sharma, Colleen Hepburn
In arid zones, the shortage of bee forage is critical and usually compels beekeepers to move their colonies in search of better forages. Identifying and mapping the spatiotemporal distribution of the bee forages over given area is important for better management of bee colonies. In this study honey bee plants in the target areas were inventoried following, ground inventory work supported with GIS applications. The study was conducted on 85 large plots of 50 × 50 m each. At each plot, data on species name, height, base diameter, crown height, crown diameter has been taken for each plant with their respective geographical positions...
July 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28654877/highlighting-the-complexities-of-a-groundwater-pilot-study-during-an-avian-influenza-outbreak-methods-lessons-learned-and-select-contaminant-results
#9
Laura E Hubbard, Dana W Kolpin, Chad L Fields, Michelle L Hladik, Luke R Iwanowicz
The highly pathogenic avian influenza (H5N2) outbreak in the Midwestern United States (US) in 2015 was historic due to the number of birds and poultry operations impacted and the corresponding economic loss to the poultry industry and was the largest animal health emergency in US history. The U.S. Geological Survey (USGS), with the assistance of several state and federal agencies, aided the response to the outbreak by developing a study to determine the extent of virus transport in the environment. The study goals were to: develop the appropriate sampling methods and protocols for measuring avian influenza virus (AIV) in groundwater, provide the first baseline data on AIV and outbreak- and poultry-related contaminant occurrence and movement into groundwater, and document climatological factors that may have affected both survival and transport of AIV to groundwater during the months of the 2015 outbreak...
June 24, 2017: Environmental Research
https://www.readbyqxmd.com/read/28647761/tourism-climatology-past-and-present-a-review-of-the-role-of-the-isb-commission-on-climate-tourism-and-recreation
#10
C R de Freitas
The Executive Board of the International Society of Biometeorology (ISB) founded the Commission on Climate, Tourism and Recreation (CCTR) at the 15th International Congress of Biometeorology in Sydney, Australia in 1999. The aims of the CCTR are to bring together researchers from around the world to critically review the current state of knowledge in tourism and recreation climatology and explore possibilities for future research. Almost two decades on, research in tourism climatology has developed and expanded due in large part to the initiatives and activities of the CCTR and several collaborative research projects run under the auspices of the CCTR...
June 24, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28610587/the-use-of-birds-as-pets-in-mexico
#11
Blanca Roldán-Clarà, Víctor M Toledo, Ileana Espejel
BACKGROUND: The use of birds as pets has been a historical tradition in Mexico since prehispanic times. It has survived through bird traders, called pajareros, which is a local name given to the trade (derived from pájaro, the Spanish word for bird). However, the trade of birds has not been sufficiently described; therefore, the goal of this paper is to analyze the bird trade in Mexico using the components of an ethnoecology scheme known as kosmos-corpus-praxis complex. METHODS: Qualitative research techniques were used, including ethnographic immersion, participative research, and interviews of 79 pajareros in 22 localities in nine Mexican states...
June 13, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28595872/distribution-and-diversity-of-marine-picocyanobacteria-community-targeting-of-prochlorococcus-ecotypes-in-winter-conditions-southern-adriatic-sea
#12
Ivana Babić, Ines Petrić, Sunčica Bosak, Hrvoje Mihanović, Iris Dupčić Radić, Zrinka Ljubešić
Adriatic, the northernmost part of the Mediterranean Sea, due its oligotrophy, topography, and hydrology dynamics, and complex circulation patterns, was suggested as an important study site for rapid climatology impacts. Its southern part is mainly oligotrophic and dominated by picophytoplankton, with cyanobacteria as main representatives. Diversity and distribution patterns of different Prochlorococcus ecotypes were investigated by molecular tools and flow cytometry during the winter convection event in the southern Adriatic (BIOTA winter cruise; February/March 2015)...
June 5, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28543388/environmental-constraints-on-the-compositional-and-phylogenetic-beta-diversity-of-tropical-forest-snake-assemblages
#13
Mario R Moura, Henrique C Costa, Antônio J S Argôlo, Walter Jetz
The ongoing biodiversity crisis increases the importance and urgency of studies addressing the role of environmental variation on the composition and evolutionary history of species assemblages, but especially the tropics and ectotherms remain understudied. In regions with rainy summers, coexistence of ectothermic species may be determined by the partitioning of the climatic niche, since ectotherms can rely on water availability and thermoregulatory behaviour to buffer constraints along their climatic niche...
May 22, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28540457/evaluating-climatic-and-non-climatic-stresses-for-declining-surface-water-quality-in-bagmati-river-of-nepal
#14
Jeeban Panthi, Fengting Li, Hongtao Wang, Suman Aryal, Piyush Dahal, Sheila Ghimire, Martin Kabenge
Both climatic and non-climatic factors affect surface water quality. Similar to its effect across various sectors and areas, climate change has potential to affect surface water quality directly and indirectly. On the one hand, the rise in temperature enhances the microbial activity and decomposition of organic matter in the river system and changes in rainfall alter discharge and water flow in the river ultimately affecting pollution dilution level. On the other hand, the disposal of organic waste and channelizing municipal sewage into the rivers seriously worsen water quality...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28526833/grassland-restoration-reduces-water-yield-in-the-headstream-region-of-yangtze-river
#15
Jia Li, Dan Liu, Tao Wang, Yingnian Li, Shiping Wang, Yuting Yang, Xiaoyi Wang, Hui Guo, Shushi Peng, Jinzhi Ding, Miaogen Shen, Lei Wang
Large-scale ecological restoration programs are considered as one of the key strategies to enhance ecosystem services. The Headstream region of Yangtze River (HYZR), which is claimed to be China's Water Tower but witnessed the rapid grassland deterioration during 1970s-2000, has seen a series of grassland restoration programs since 2000. But few studies have thoroughly estimated the hydrological effect of this recent grassland restoration. Here we show that restoration significantly reduces growing-season water yield coefficient (WYC) from 0...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28520817/heat-in-the-southeastern-united-states-characteristics-trends-and-potential-health-impact
#16
Jeremy E Diem, Christine E Stauber, Richard Rothenberg
High summer temperatures in extratropical areas have an impact on the public's health, mainly through heat stress, high air pollution concentrations, and the transmission of tropical diseases. The purpose of this study is to examine the current characteristics of heat events and future projections of summer apparent temperature (AT)-and associated health concerns-throughout the southeastern United States. Synoptic climatology was used to assess the atmospheric characteristics of extreme heat days (EHDs) from 1979-2015...
2017: PloS One
https://www.readbyqxmd.com/read/28516029/the-power-of-vertical-geolocation-of-atmospheric-profiles-from-gnss-radio-occultation
#17
Barbara Scherllin-Pirscher, Andrea K Steiner, Gottfried Kirchengast, Marc Schwärz, Stephen S Leroy
High-resolution measurements from Global Navigation Satellite System (GNSS) radio occultation (RO) provide atmospheric profiles with independent information on altitude and pressure. This unique property is of crucial advantage when analyzing atmospheric characteristics that require joint knowledge of altitude and pressure or other thermodynamic atmospheric variables. Here we introduce and demonstrate the utility of this independent information from RO and discuss the computation, uncertainty, and use of RO atmospheric profiles on isohypsic coordinates-mean sea level altitude and geopotential height-as well as on thermodynamic coordinates (pressure and potential temperature)...
February 16, 2017: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/28493143/differences-in-the-importance-of-weather-and-weather-based-decisions-among-campers-in-ontario-parks-canada
#18
Micah J Hewer, Daniel J Scott, William A Gough
Parks and protected areas represent an important resource for tourism in Canada, in which camping is a common recreational activity. The important relationship between weather and climate with recreation and tourism has been widely acknowledged within the academic literature. Howbeit, the need for activity-specific assessments has been identified as an on-going need for future research in the field of tourism climatology. Furthermore, very little is known about the interrelationships between personal characteristics and socio-demographics with weather preferences and behavioural thresholds...
May 10, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28483865/behavioural-ecological-and-evolutionary-responses-to-extreme-climatic-events-challenges-and-directions
#19
Martijn van de Pol, Stéphanie Jenouvrier, Johannes H C Cornelissen, Marcel E Visser
More extreme climatic events (ECEs) are among the most prominent consequences of climate change. Despite a long-standing recognition of the importance of ECEs by paleo-ecologists and macro-evolutionary biologists, ECEs have only recently received a strong interest in the wider ecological and evolutionary community. However, as with many rapidly expanding fields, it lacks structure and cohesiveness, which strongly limits scientific progress. Furthermore, due to the descriptive and anecdotal nature of many ECE studies it is still unclear what the most relevant questions and long-term consequences are of ECEs...
June 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28475910/aerosol-characterization-and-radiative-properties-over-kavaratti-a-remote-island-in-southern-arabian-sea-from-the-period-of-observations
#20
Piyushkumar N Patel, U C Dumka, K N Babu, A K Mathur
Long-term measurements of spectral aerosol optical depth (AOD) using sun/sky radiometer for a period of five years (2009-2014) from the remote island location at Kavaratti (KVT; 10.56°N, 72.64°E) in the southern Arabian sea have been analysed. Climatologically, AODs decrease from October to reach maximum of ~0.6 (at 500nm) in March, followed by a sudden fall towards May. Significant modulations of intra-seasonal timescales over this general pattern are noticed due to the changes in the relative strength of distinctively different sources...
December 1, 2017: Science of the Total Environment
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