نتایج جستجو برای: precipitation changes

تعداد نتایج: 921549  

Journal: :تحقیقات جغرافیایی 0
علی اکبر رسولی گروه جغرافی دانشگاه تبریز احمد رضا قاسمی گروه جغرافی دانشگاه تبریز رقیه روشنی گروه جغرافی دانشگاه تبریز احمد رضا قاسمی گروه جغرافی دانشگاه تبریز

abstractprecipitation could be regarded as a complex and a very vital element in the earth atmosphere and its spatial-temporal changes can control iran's climate. in the current research, in order to model the spatial-temporal changes of annual precipitation, the data taking from 50 synoptic stations, have been analyzed during the years 1966-2005, with a suitable distribution. the most dat...

2010
P. T. Nastos A. Vassilopoulos

In this paper we examined whether the recorded precipitation changes cause erosion in Naxos Island, Greece using precipitation indices derived from daily precipitation totals, during the period 1955–2007, in order to develop an erosion risk model. Although the mean annual precipitation appear to be low (∼360.0 mm), the erosion processes of the area are very intense, because of the intensive cha...

حبیب نژاد روشن, محمود, سلیمانی, کریم , پیرنیا, عبدالله,

  In this research, an investigation on the changes of two major climatic parameters i.e., temperature and precipitation is done in the Mazandaran Province and west of Golestan Province with emphasi s on part of coastal line of Caspian Sea and its comparison with changes of these two parameters in scales of northern hemisphere and global. For this purpose, the time series of annual precipitatio...

2015
Ying Fan Benjamin R. Lintner YING FAN BENJAMIN R. LINTNER CHRISTOPHER P. WEAVER

Significant increases in summer precipitation have occurred in the midwestern United States over the last century for reasons that remain unclear. It is postulated that the expansion of irrigation and cropland in the central United States over the past 60 yr has been a major contributor to these observed increases in precipitation. As a first step toward attribution of these precipitation chang...

Journal: :Ecology letters 2011
Christy M McCain Robert K Colwell

Mountains are centres of global biodiversity, endemism and threatened species. Elevational gradients present opportunities for species currently living near their upper thermal limits to track cooler temperatures upslope in warming climates, but only if changes in precipitation are sufficiently in step with temperature. We model local population extirpation risk for a range of temperature and p...

2014
Suraj D. Polade David W. Pierce Daniel R. Cayan Alexander Gershunov Michael D. Dettinger

Future changes in the number of dry days per year can either reinforce or counteract projected increases in daily precipitation intensity as the climate warms. We analyze climate model projected changes in the number of dry days using 28 coupled global climate models from the Coupled Model Intercomparison Project, version 5 (CMIP5). We find that the Mediterranean Sea region, parts of Central an...

Journal: :international journal of advanced biological and biomedical research 2013
pezhman alahbakhshian farsani mahmoud habibnejad roshan ghorban vahbzade karim solaimani

climatic parameters in time and space scales of change are for many reasons of changes and how they should be based on observations using a statistical method to be determined. analysis of the most widely used statistical methods that assess potential climate change on hydrological time series, such series of precipitation, temperature and flow rate used. this study of 11 synoptic,rain gage and...

2012
Claus Beier Carl Beierkuhnlein Thomas Wohlgemuth Josep Penuelas Bridget Emmett Christian Körner Hans de Boeck Jens Hesselbjerg Christensen Sebastian Leuzinger Ivan A. Janssens Karin Hansen

Claus Beier,* Carl Beierkuhnlein, Thomas Wohlgemuth, Josep Penuelas, Bridget Emmett, Christian Körner, Hans de Boeck, Jens Hesselbjerg Christensen, Sebastian Leuzinger Ivan A. Janssens and Karin Hansen Abstract Climatic changes, including altered precipitation regimes, will affect key ecosystem processes, such as plant productivity and biodiversity for many terrestrial ecosystems. Past and ongo...

2012
TIMOTHY M. MERLIS TAPIO SCHNEIDER SIMONA BORDONI IAN EISENMAN

Orbital precession changes the seasonal distribution of insolation at a given latitude but not the annual mean. Hence, the correlation of paleoclimate proxies of annual-mean precipitation with orbital precession implies a nonlinear rectification in the precipitation response to seasonal solar forcing. It has previously been suggested that the relevant nonlinearity is that of the Clausius–Clapey...

2017
Mariola Kędra

This study analyzes changes in long-term patterns of precipitation and river flow, as well as changes in their variability over the most recent 60 years (1956–2015). The study area is situated in the mountain basin of the Dunajec River, encompassing streams draining the Tatra Mountains in southern Poland. The focus of the study was to evaluate how regional warming translates into precipitation ...

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