نتایج جستجو برای: extreme climate events

تعداد نتایج: 553029  

2018
Walter Leal Filho Abul Quasem Al-Amin Gustavo J Nagy Ulisses M Azeiteiro Laura Wiesböck Desalegn Y Ayal Edward A Morgan Paschal Mugabe Marilyn Aparicio-Effen Hubert Fudjumdjum Charbel Jose Chiappetta Jabbour

There are various climate risks that are caused or influenced by climate change. They are known to have a wide range of physical, economic, environmental and social impacts. Apart from damages to the physical environment, many climate risks (climate variability, extreme events and climate-related hazards) are associated with a variety of impacts on human well-being, health, and life-supporting ...

Journal: :CoRR 2016
Evan Racah Christopher Beckham Tegan Maharaj Prabhat Christopher Joseph Pal

The detection and identification of extreme weather events in large scale climate simulations is an important problem for risk management, informing governmental policy decisions and advancing our basic understanding of the climate system. Recent work has shown that fully supervised convolutional neural networks (CNNs) can yield acceptable accuracy for classifying well-known types of extreme we...

Journal: :CoRR 2016
Yunjie Liu Evan Racah Prabhat Joaquin Correa Amir Khosrowshahi David Lavers Kenneth Kunkel Michael F. Wehner William D. Collins

Detecting extreme events in large datasets is a major challenge in climate science research. Current algorithms for extreme event detection are build upon human expertise in defining events based on subjective thresholds of relevant physical variables. Often, multiple competing methods produce vastly different results on the same dataset. Accurate characterization of extreme events in climate s...

Journal: :فیزیک زمین و فضا 0
وحید ورشاویان دانش آموختة کارشناسی ارشد هواشناسی کشاورزی، گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، دانشگاه تهران، ایران علی خلیلی استاد، گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، دانشگاه تهران، ایران نوذر قهرمان استادیار، گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، دانشگاه تهران، ایران سهراب حجام دانشیار، گروه هواشناسی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران

an increase, even moderate, in global temperature is expected to result in a change in frequency of extreme weather events like drought, heavy rainfall and storms. the study of extreme events is difficult due to the fact that it is difficult to find long-term homogeneous data series. also the delimitation of extreme events is not univocal since a parameter value that would be defined as an extr...

2014
Francis Annan Wolfram Schlenker

The United States produces 40% of the world’s corn and soybeans. Given its dominant market share, any effect on US production has global repercussions. Annual fluctuations in yields crucially depend on the occurrence of extreme heat as measured by temperatures that exceed 29C and 30C, respectively. We examine whether the highly subsidized US crop insurance gives farmers a disincentive to use al...

2008
Hyun-Han Kwon Abedalrazq F. Khalil Tobias Siegfried

It is now widely acknowledged that climate variability modulates the frequency of extreme hydrological events. Traditional methodologies for hydrologic frequency analysis are not devised to account for variation in the exogenous teleconnections. Flood frequency analysis is further plagued by the assumptions of stationary in the causal structure as well as ergodicity. Here, we propose a dynamica...

2012
Catherine M. Cooney

The number of hot days and nights very likely has increased globally in recent years, according to a special report 1 focused solely on extreme weather events from the Intergovernmental Panel on Climate Change (IPCC), 2 while the number of cold days has decreased. The future looks similar, the IPCC panel says: If countries continue to increase emissions of carbon dioxide (CO 2)—the greenhouse g...

2012
Carolyn Kousky

This paper reviews the empirical literature on the economic impacts of natural disasters to inform both climate adaptation policy and the estimation of potential climate damages. It covers papers that estimate the shortand long-run economic impacts of weather-related extreme events as well as studies regarding the determinants of the magnitude of those damages (including fatalities). The paper ...

Journal: :Global change biology 2015
Alan K Knapp David L Hoover Kevin R Wilcox Meghan L Avolio Sally E Koerner Kimberly J La Pierre Michael E Loik Yiqi Luo Osvaldo E Sala Melinda D Smith

Climate change is intensifying the hydrologic cycle and is expected to increase the frequency of extreme wet and dry years. Beyond precipitation amount, extreme wet and dry years may differ in other ways, such as the number of precipitation events, event size, and the time between events. We assessed 1614 long-term (100 year) precipitation records from around the world to identify key attribute...

Journal: :Proceedings. Biological sciences 2017
Simone Vincenzi Marc Mangel Dusan Jesensek John Carlos Garza Alain J Crivelli

Climate change is predicted to increase the frequency and intensity of extreme climate events. Tests on empirical data of theory-based predictions on the consequences of extreme climate events are thus necessary to understand the adaptive potential of species and the overarching risks associated with all aspects of climate change. We tested predictions on the genetic and life-history consequenc...

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