نتایج جستجو برای: scale precipitation

تعداد نتایج: 629553  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
N Devaraju Govindasamy Bala Angshuman Modak

In this paper, using idealized climate model simulations, we investigate the biogeophysical effects of large-scale deforestation on monsoon regions. We find that the remote forcing from large-scale deforestation in the northern middle and high latitudes shifts the Intertropical Convergence Zone southward. This results in a significant decrease in precipitation in the Northern Hemisphere monsoon...

2010
Antonello Pasini Rocco Langone

On a regional scale, climate variability masks any direct link between external forcings and precipitation values. Thus, the problem of attribution of precipitation changes splits into two distinct steps: understanding how forcings influence circulation patterns and finding relationships between these patterns and the behavior of precipitation. Here, we deal with this second step, by analyzing ...

A fundamental study of scale formation of calcium carbonate (CaCO3) for producing oil wells has been carried out. This article presents the study of the prediction of salt deposition in two different synthetic formation waters and investigates the effects of temperature and pressure on calcium carbonate precipitation. The dependence of the induction period of the precipitation of calcium carbon...

1998
DANIEL R. CAYAN MICHAEL D. DETTINGER HENRY F. DIAZ NICHOLAS E. GRAHAM

Decadal (.7yr period) variations of precipitation over western North America account for 20%–50% of the variance of annual precipitation. Spatially, the decadal variability is broken into several regional [O(1000 km)] components. These decadal variations are contributed by fluctuations in precipitation from seasons of the year that vary from region to region and that are not necessarily concent...

2017
Wei Wei Zhongjie Shi Xiaohui Yang Zheng Wei Yanshu Liu Zhiyong Zhang Xiao Zhang Hao Guo Kebin Zhang Luis Gimeno

Based on the daily precipitation data from 53 meteorological stations, 11 extreme precipitation indices were selected, categorized and calculated; the temporal and spatial patterns in these indices and their teleconnections with the large-scale circulations were analyzed by the non-parametric Mann-Kendall test; and Sen’s slope estimator and linear regression for the period of 1960–2014 were cal...

2009
Jessica Lundquist Brian Huggett Heidi Roop Natalie Low

[1] Precipitation measurements in complex terrain are difficult to obtain, particularly during convective thunderstorm precipitation or mixed rain and snow. In such cases, stream stage recorders distributed across many small, headwater streams can bridge the gap between point measurements of precipitation and larger-scale total basin discharge. We use case studies from two steep basins with sha...

2010
Tarendra Lakhankar Andrew S. Jones Cynthia L. Combs Manajit Sengupta Thomas H. Vonder Haar Reza Khanbilvardi

Spatial and temporal soil moisture dynamics are critically needed to improve the parameterization for hydrological and meteorological modeling processes. This study evaluates the statistical spatial structure of large-scale observed and simulated estimates of soil moisture under pre- and post-precipitation event conditions. This large scale variability is a crucial in calibration and validation...

2008
T. Schneider P. A. O’Gorman

While the specific humidity of the atmosphere is expected to increase as the climate warms, roughly consistent with constant relative humidity in a global mean, precipitation increases do not keep pace with specific humidity increases. To investigate systematically how precipitation changes with climate, we conducted a series of simulations with an idealized general circulation model in which w...

2012
JASON P. EVANS SETH WESTRA

This study investigates the ability of a regional climate model (RCM) to simulate the diurnal cycle of precipitation over southeast Australia, to provide a basis for understanding themechanisms that drive diurnal variability. When compared with 195 observation gauges, the RCM tends to simulate too many occurrences and too little intensity for precipitation events at the 3-hourly time scale. How...

2017
Hongwei Ruan Songbing Zou Dawen Yang Yuhan Wang Zhenliang Yin Zhixiang Lu Fang Li Baorong Xu

The scarcity and uneven distribution of precipitation stations in the inland river basins of the Northeastern Tibetan Plateau restrict the application of the distributed hydrological model and spatial analysis of water balance component characteristics. This study used the upper Heihe River Basin as a case study, and daily gridded precipitation data with 3 km resolution based on the spatial int...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید