نتایج جستجو برای: annual precipitation

تعداد نتایج: 163584  

2017
Xiuhua Zhang Hui Wang Renqing Wang Yutao Wang Jian Liu

The relationships between species richness and driving factors might vary with taxa and spatial scale. For this study we used plant species data of eight groups from nature reserves in China, namely pteridophytes, gymnosperms, angiosperms, vascular plants, Chinese endemic species, rare and endangered plants, woody plants, and herbaceous plants, and eight putative environmental predictors to exp...

2007
H. J. SIMPSON

Annual natural discharge (Q) of the River Murray and its most extensive tributary, the Darling River system, is often inversely related to sea surface temperature (SST) anomalies in the eastern tropical Pacific Ocean. These SST variations are components of a planetary-scale phenomenon referred to as E1 Nino-Southern Oscillation (ENSO). Darling and Murray river historical values of Q indicate th...

2002
Katrin Rehdanz

This study investigates the amenity value of climate to British households. By using the hedonic price approach, the marginal willingness to pay for small changes in climate variables, specified as averages and ranges, is derived. The estimates suggest that British people would typically prefer a greater distribution of precipitation across the seasons (i.e. holding annual precipitation constan...

2005
YING SUN SUSAN SOLOMON AIGUO DAI ROBERT W. PORTMANN

Daily precipitation data from worldwide stations and gridded analyses and from 18 coupled global climate models are used to evaluate the models’ performance in simulating the precipitation frequency, intensity, and the number of rainy days contributing to most (i.e., 67%) of the annual precipitation total. Although the models examined here are able to simulate the land precipitation amount well...

Journal: :تحقیقات جغرافیایی 0
بختیار محمدی دانشکده منابع طبیعی دانشگاه کردستان

abstract in this study, trends of threshold heavy precipitation were examined on the basis of measurements of 1437 stations (included synoptic, climatic and rain gage stations) in iran for the period of 40 years (1964-2003). for this purpose, the statistical method of nonparametric mann-kendall test is used for analyzinging the thresholds of heavy precipitation and nonparametric sen method for ...

2003
Benjamin N. Sacks David L. Woodward Arthur E. Colwell

In Mediterranean ecosystems, abiotic factors are known to affect vertebrate population dynamics, but little is known about how these factors affect population dynamics of parasites. We conducted a 9-year investigation of the roles of temperature, precipitation, and vector abundance as determinants of transmission of the non-native canine heartworm (Dirofilaria immitis), a dangerous parasite of ...

Precipitation is one of the most intractable elements. The oscillating behavior of the crucial environmental planning (explicit and tacit knowledge of the behavior), is the key variable. Spectrum analysis techniques to understand the behavior of overt or covert methods suitable for the extraction and analysis of climate oscillations with different wave lengths. The size range of the distributio...

2012
Christoff Andermann Laurent Longuevergne Stéphane Bonnet Alain Crave Philippe Davy Richard Gloaguen

16 17 The transfer of precipitation into rivers involves temporary water storage in reservoirs 1,2 such as 18 soils, groundwater, snow and glaciers, where different residence times influence the hydrological 19 cycle. In the central Himalayas, the water budget is considered to be primarily controlled by 20 monsoon rainfall, snow and glacier melt 3,4 , and secondarily by evapotranspiration 3. Th...

2001
PETER MOLNÁR JORGE A. RAMÍREZ

River systems in semiarid regions are susceptible to rapid and dramatic channel erosion and arroyo formation. Climate plays an important role in arroyo development through changes in precipitation intensity, seasonality, and variability. Here, trends in precipitation and streamflow at the annual, monthly, and daily timescales for the last 50 yr are analyzed for the Rio Puerco Basin in northwest...

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