نتایج جستجو برای: current state of climate
تعداد نتایج: 21276203 فیلتر نتایج به سال:
Two major issues through studies on hydrological impact assessment of climate change are the sufficiency of historical data and selection of the best rainfall-runoff model. Climate models, with the ability to simulate climatic variables, are considered as references for future projections. Therefore, the rainfall-runoff model must be able to simulate streamflow using only these variables. Curre...
Efforts to provide security have always been of great importance to human being. In recent decades, the security issues of climate change have attracted attentions due to its sustainable consequences on the lives and civilization of humans. Among all countries, the ones which are placed in draught belt, like our country Iran, have hurt a lot because of low precipitations and also mismanagements...
Predicting the effect of climate change on the distribution of valuable and endangered plant species is essential for their conservation and management. In this study, the MaxEnt model and 10 environmental variables were used to predict the current and future distribution of E. amoenum and E. italicum in response to climate change. Also, to predict the effect of climate change in the future (th...
food security in the world that water shortages are faced is very important, especially in arid regions. effects of climate change on agricultural water requirement have doubled this importance. in this study, the risk of water demand has been assessed for a wide range of products under climate change. aogcm models have been used to simulate climate variables. the climate change scenarios of cl...
Climate change and the global warming phenomenon is one of the main concerns of human societies. In this study, the impact of climate change on rice, as the main crop in Guilan province, Iran and soybean production as the second crop was investigated. To adapt to the negative impact of climate change in future, optimal crop calendars were indentified for different rice and soybean cultivars usi...
Mountains over the world are considered as the indicators of climate change. The Himalayas is comprised of five ranges viz., Pir Panjal, Great Himalayas, Zanskar, Ladhak and Karakorum. Ladakh region lies in the northern most state of India, Jammu and Kashmir, in the Ladhak range. It has a unique cold-arid climate and lies immediately south of the Karakorum range. With scarce water resources, su...
Encompassing a range of agro-ecological systems and diverse geographic and climatic contexts, the Northwest region provides a unique opportunity to test a collaborative approach to assessing and prioritizing climate change mitigation and adaptation opportunities. At a 2016 workshop titled “Agriculture in a Changing Climate”, university faculty and students, crop and livestock producers, and ind...
Field Effect Diode (FED)s are interesting device in providing the higherON-state current and lower OFF–state current in comparison with SOI-MOSFETstructures with similar dimensions. The impact of channel length and band-to-bandtunneling (BTBT) on the OFF-state current of the side contacted FED (S-FED) has beeninvestigated in this paper. To find the lowest effective channel length, this device i...
Randall, D.A., 1989. Cloud Parameterization for climate modeling: status and prospects. Atmos. Res., 23: 245-361. The current status of cloud parameterization research is reviewed. It is emphasized that the upper tropospheric stratiform clouds associated with deep convection are both physically important and poorly parameterized in current models. Emerging parameterizations are described in gen...
J Bone Joint Surg [Br] 2008;90-B:1548-57. New developments in osteotomy techniques and methods of fixation have caused a revival of interest of osteotomies around the knee. The current consensus on the indications, patient selection and the factors influencing the outcome after high tibial osteotomy is presented. This paper highlights recent research aimed at joint pressure redistribution, fixa...
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