نتایج جستجو برای: climate change and acid rain

تعداد نتایج: 17018257  

2009
Kevin E. Trenberth

Evidence is building that human-induced climate change— or global warming—has a direct influence on changes in precipitation and the hydrological cycle. While precipitation amount is most commonly considered, even bigger changes occur in its intensity, frequency and type (rain vs. snow). A warmer climate increases risks of both drought and flood, but at different times and/or places. These aspe...

2011
Dejene K. Mengistu

Climate change adversely affects Ethiopian economy due to heavy dependence of the agricultural sector on rainfall. A decrease of rainfall and rise in temperature has been increasing the exposure of the country to frequent drought. The study was conducted in central Tigray, Adiha tabia, to examine the perception of farmers on trends of climate changes and existing coping strategies. Farmers’ kno...

ژورنال: علوم آب و خاک 2018

One of the major issues in the contemporary world is climate change. The behavior and characteristics of parameters affecting climate change can cause them to be seen and hidden. As one of the effective ways to detect overt and covert behaviors for periodic climatic data series, Spectral analysis can be used. It is the analysis of each of the wavelengths series, making this behavior clear. Acco...

2014
ANGELINE G. PENDERGRASS DENNIS L. HARTMANN

Changes in the frequency and intensity of rainfall are an important potential impact of climate change. Two modes of change, a shift and an increase, are applied to simulations of global warmingwithmodels from phase 5 of the Coupled Model Intercomparison Project (CMIP5). The response to CO2 doubling in the multimodel mean of CMIP5 daily rainfall is characterized by an increase of 1% K at all ra...

Journal: :علوم و فنون زنبور عسل 0

abstract this chapter describes how the climate change is potentially the mostsevere threat to pollinator biodiversity. mounting evidence demonstrates that therehave already been biotic responses to the relatively small climate changes that haveoccurred this century. pollinators such as birds, bees, butterflies, moths, flies, wasps,beetles bats and even mosquitoes are essential for food product...

2012
Benjamin F. Zaitchik Belay Simane Shahid Habib Martha C. Anderson Mutlu Ozdogan Jeremy D. Foltz

The Blue Nile (Abay) Highlands of Ethiopia are characterized by significant interannual climate variability, complex topography and associated local climate contrasts, erosive rains and erodible soils, and intense land pressure due to an increasing population and an economy that is almost entirely dependent on smallholder, low-input agriculture. As a result, these highland zones are highly vuln...

2011
S PANDE M SHARMA

With the growing recognition of the possibility of global climate change, an increasing emphasis on world food security in general and its regional impacts in particular have come to forefront of the scientific community. Agriculture production of rainfed regions is expected to suffer severe water crisis due to delayed monsoon, uneven distribution of rain as a result of climate change. The impa...

2015
Laura Woltersdorf Stefan Liehr Petra Döll Ataur Rahman

The design of rainwater harvesting based gardens requires considering current climate but also climate change during the lifespan of the facility. The goal of this study is to present an approach for designing garden variants that can be safely supplied with harvested rainwater, taking into account climate change and adaptation measures. In addition, the study presents a methodology to quantify...

2008
D. W. Hardekopf

Two branches forming the headwaters of a stream in the Czech Republic were studied. Both streams have similar catchment characteristics and historical deposition; however one is rain-fed and strongly affected by acid atmospheric deposition, the other spring-fed and only moderately acidified. The MAGIC model was used to reconstruct past stream water and soil chemistry of the rain-fed branch, and...

Ghorban Vahbzade Karim Solaimani Mahmoud Habibnejad Roshan Pezhman Alahbakhshian Farsani,

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...

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