نتایج جستجو برای: low rainfall

تعداد نتایج: 1228585  

2008
Vincent Moron Andrew W. Robertson Jian-Hua Qian

The austral summer monsoon onset and post-onset rainfall and their associated low-level winds are analyzed during the August-February season over Indonesia from 1979 to 2006 using surface and satellite products as well as reanalyses and regional climate model simulations. Onset date is defined using a local agronomic definition. Its leading empirical orthogonal function is found to exhibit a la...

Journal: :The Science of the total environment 2015
Panos Panagos Cristiano Ballabio Pasquale Borrelli Katrin Meusburger Andreas Klik Svetla Rousseva Melita Perčec Tadić Silas Michaelides Michaela Hrabalíková Preben Olsen Juha Aalto Mónika Lakatos Anna Rymszewicz Alexandru Dumitrescu Santiago Beguería Christine Alewell

Rainfall is one the main drivers of soil erosion. The erosive force of rainfall is expressed as rainfall erosivity. Rainfall erosivity considers the rainfall amount and intensity, and is most commonly expressed as the R-factor in the USLE model and its revised version, RUSLE. At national and continental levels, the scarce availability of data obliges soil erosion modellers to estimate this fact...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

2017
Erik M Sandvig Tim Coulson Jiro Kikkawa Sonya M Clegg

Understanding the influence of environmental factors on population dynamics is fundamental to many areas in biology. Survival is a key factor of population biology, as it is thought to be the predominant driver of growth in long-lived passerines, which can be influenced by both biotic and abiotic environmental conditions. We used mark-recapture methods and generalized linear mixed models to tes...

2014
MICHAEL D. TOY RICHARD H. JOHNSON

A long-lived heavy precipitation area was observed along the southwest coast of Taiwan from 13 to 18 June 2008 during the Terrain-Influenced Monsoon Rainfall Experiment (TiMREX). Rainfall amounts exceeded 500mm along portions of the coast, and the coastal plains experienced severe flooding. The precipitation systems were influenced by blocking effects, as the southerly moist monsoon flow imping...

2009
Vincent Moron Andrew W. Robertson Jian-Hua Qian

The austral summer monsoon onset and post-onset rainfall and their associated low-level winds are analyzed during the August-February season over Indonesia from 1979 to 2006 using surface and satellite products as well as reanalyses and regional climate model simulations. Onset date is defined using a local agronomic definition. Its leading empirical orthogonal function is found to exhibit a re...

2000
Guiling Wang Elfatih A. B. Eltahir Ralph M. Parsons

Rainfall observations in the Sahel region of West Africa show significant variability at the timescale of decades. Here we explore the mechanisms of this lowfrequency variability using a coupled biosphere-atmosphere model which includes explicit representation of vegetation dynamics. By forcing the model with the observed sea surface temperature (SST) of the tropical Atlantic Ocean during the p...

2011
MASATO IWASHITA AYAMI SAITO MIKA ARAI YOSHIAKI FURUSHO TADASHI SHIMAMURA

Rare earth element (REE) concentrations were determined in 32 rainfall events collected in suburban Tokyo. Two or more samples were collected for 13 events out of 32 events. A pre-concentration method was applied using a chelate resin solid phase extraction column. Good and uniform recoveries for REEs (Y to Lu, 99~101% at pH = 3.7~4.0) were obtained. Detection limits reached as low as 0.001 ng ...

2004
J. Li J. Lewis J. Rowland G. Tappan L. L. Tieszen

Time series of rainfall data and normalized difference vegetation index (NDVI) were used to evaluate land cover performance in Senegal, Africa, for the period 1982–1997, including analysis of woodland/forest, agriculture, savanna, and steppe land cover types. A strong relationship exists between annual rainfall and season-integrated NDVI for all of Senegal (r 1⁄4 0:74 to 0.90). For agriculture,...

2008
RUSS S. SCHUMACHER RICHARD H. JOHNSON

Observations and numerical simulations are used to investigate the atmospheric processes that led to extreme rainfall and resultant destructive flash flooding in eastern Missouri on 6–7 May 2000. In this event, a quasi-stationary mesoscale convective system (MCS) developed near a preexisting mesoscale convective vortex (MCV) in a very moist environment that included a strong low-level jet (LLJ)...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید