نتایج جستجو برای: assessing uncertainty of climate change models

تعداد نتایج: 21306544  

2017
Andreea Pintea Dumitru Popescu Ioana Pisica A. Pintea

By continuing to use fossil fuels we are bound to pollute the atmosphere, and consequently, unwanted greenhouse and climate change effects will come to dominate every part of the earth. Wind power energy represents an interesting alternative to traditional forms of obtaining energy. However, the efficiency of wind power strongly depends on the control methods that play a significant role in eli...

2009
M. Z. Hashmi A. Y. Shamseldin B. W. Melville

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract Global Circulation Models (GCMs) are a major tool used for future projections of climate change using different emission scenarios. However, for assessing the hydrological impacts of climate change at the watershed and the regional scale, ...

2005
Francesco Bosello Jian Zhang

The economy-wide implications of climate change on agricultural sectors in 2050 are estimated using a static computable general equilibrium model. Peculiar to this exercise is the coupling of the economic model with a climatic model forecasting temperature increase in the relevant year and with a crop-growth model estimating climate change impact on cereal productivity. The main results of the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده زبانهای خارجی 1391

the primary goal of the current project was to examine the effect of three different treatments, namely, models with explicit instruction, models with implicit instruction, and models alone on differences between the three groups of subjects in the use of the elements of argument structures in terms of toulmins (2003) model (i.e., claim, data, counterargument claim, counterargument data, rebutt...

2011
K. Sham Bhat Murali Haran Adam Terando

Projections of future climatic changes are a key input to the design of climate change mitigation and adaptation strategies. Current climate change projections are deeply uncertain. This uncertainty stems from several factors, including parametric and structural uncertainties. One common approach to characterize and, if possible, reduce these uncertainties is to confront (calibrate in a broad s...

Journal: :تولید گیاهان زراعی 0
حامد عینی نرگسه دانشگاه شهید بهشتی رضا دیهیم فرد دانشگاه شهید بهشتی سعید صوفی زاده shahid beheshti university, evin, tehran مسعود حقیقت سازمان هواشناسی کشور امید نوری shahid beheshti university, evin, tehran

background and objectives: over the last decade, climate change has been one of the most challenging issues in the scientific papers. studying the impacts of climate change on crop productivity at regional scale will depend on the right estimate of future climate. this estimation is being implemented by climate models and most of them by general circulation models (gcms). this study aims at pre...

2014
Oliver Heiri Stephen J. Brooks Hans Renssen Alan Bedford Marjolein Hazekamp Boris Ilyashuk Elizabeth S. Jeffers Barbara Lang Emiliya Kirilova Saskia Kuiper Laurent Millet Stéphanie Samartin Monika Toth Frederike Verbruggen Jenny E. Watson Nelleke van Asch Emmy Lammertsma Leeli Amon Hilary H. Birks H. John B. Birks Morten F. Mortensen Wim Z. Hoek Enikö Magyari Castor Muñoz Sobrino Heikki Seppä Willy Tinner Spassimir Tonkov Siim Veski André F. Lotter

Comparisons of climate model hindcasts with independent proxy data are essential for assessing model performance in non-analogue situations. However, standardized palaeoclimate data sets for assessing the spatial pattern of past climatic change across continents are lacking for some of the most dynamic episodes of Earth's recent past. Here we present a new chironomid-based palaeotemperature dat...

2015
Douglas G. MacMartin Ben Kravitz Philip J. Rasch

Uncertain climate system response has been raised as a concern regarding solar geoengineering. We explore the effects of geoengineering on one source of climate system uncertainty by evaluating the intermodel spread across 12 climate models participating in the Geoengineering Model Intercomparison project. The model spread in simulations of climate change and the model spread in the response to...

2013
Wendy S. Parker

Many studies of future climate change take an ensemble modeling approach in which simulations of future conditions are produced with multiple climate models (or model versions), rather than just one. These ensemble studies are of two main types—perturbed-physics and multimodel—which investigate different sources of uncertainty about future climate change. Increasingly, methods are being applied...

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