نتایج جستجو برای: precipitation

تعداد نتایج: 59201  

Journal: :Remote Sensing 2016
Jong Pil Kim Il Won Jung Kyung Won Park Sun Kwon Yoon Donghee Lee

Satellite-derived precipitation can be a potential source of forcing data for assessing water availability and managing water supply in mountainous regions of East Asia. This study investigates the hydrological utility of satellite-derived precipitation and uncertainties attributed to error propagation of satellite products in hydrological modeling. To this end, four satellite precipitation pro...

2006
Jerry M. Davis Jenise L. Swall

The ability of the US Environmental Protection Agency’s Community Multi-scale Air Quality (CMAQ) model to simulate the wet deposition of ammonium during 8-week winter and summer periods in 2001 is evaluated using observations from the National Acid Deposition Program (NADP) monitoring sites. The objective of this study is to ascertain the effects of precipitation simulations and emissions on CM...

2018
Wei Li Limin Duan Yanyun Luo Tingxi Liu

In this work, we use the gridded precipitation dataset (with a resolution of 0.5◦ × 0.5◦) of the eastern part of inland river basin of Inner Mongolian Plateau from 1961–2015 as the basis and adopt the methods of climatic diagnosis (e.g., the Modified Mann-Kendall method, principal component analysis, and correlation analysis) to analyze the spatial and temporal variations of six extreme precipi...

Journal: :Environmental monitoring and assessment 2012
Natalie E Latysh Gregory Alan Wetherbee

High-elevation regions in the United States lack detailed atmospheric wet-deposition data. The National Atmospheric Deposition Program/National Trends Network (NADP/NTN) measures and reports precipitation amounts and chemical constituent concentration and deposition data for the United States on annual isopleth maps using inverse distance weighted (IDW) interpolation methods. This interpolation...

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: :Remote Sensing 2016
Jingjing Li Kuolin Hsu Amir Aghakouchak Soroosh Sorooshian

An object-based verification approach is employed to assess the performance of the commonly used high-resolution satellite precipitation products: Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN), Climate Prediction center MORPHing technique (CMORPH), and Tropical Rainfall Measurement Mission (TRMM) Multi-Satellite Precipitation Analysis (TMP...

2005
Jingyun Fang Shilong Piao Liming Zhou Jinsheng He Fengying Wei Ranga B. Myneni Compton J. Tucker Kun Tan

[1] In this paper, we use growing season Normalized Difference Vegetation Index (NDVI) as an indicator of plant growth to quantify the relationships between vegetation production and intra-annual precipitation patterns for three major temperate biomes in China: grassland, deciduous broadleaf forest, and deciduous coniferous forest. With increased precipitation, NDVI of grassland and deciduous b...

2013
Jie Chen Hui Qian

The mixing precipitation of CaCO3 in natural waters was theoretically studied by the methods of chemical equilibrium calculation. Results show that mixing precipitation of CaCO3 can be produced by mixing between two unsaturated water samples with respect to CaCO3, two oversaturated water samples, an unsaturated water sample and an oversaturated water sample. Mixing precipitation can be classifi...

2015
Xiaoming Xu Dejun Li Yiqi Luo

Global models projected that, precipitation in Great Plains of the United States will decrease in summer and increase in spring and winter. However, few studies had carefully examined ecosystem responses to this intra-annual redistribution of precipitation. Here we used a process-based model, Terrestrial ECOsystem (TECO) Model, to evaluate responses of ecosystem carbon processes (including net ...

Journal: :Entropy 2017
Liang Cheng Jun Niu Dehai Liao

The spatial and temporal variability of precipitation time series were investigated for the Hexi Corridor, in Northwest China, by analyzing the entropy information. The examinations were performed on monthly, seasonal, and annual timescales based on 29 meteorological stations for the period of 1961–2015. The apportionment entropy and intensity entropy were used to analyze the regional precipita...

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