نتایج جستجو برای: سری CMIP5
تعداد نتایج: 14099 فیلتر نتایج به سال:
تا قبل از انتشار گزارش پنجم ارزیابی تغییر اقلیم (AR5) هیات بینالدول تغییر اقلیم در نوامبر سال 2013، محققان کشورمان از داده های مدل های گردش کلی سری CMIP3 برای پیشنگری تغییر اقلیم کشور استفاده می کردند؛ اما از حدود سال 2015 بتدریج دسترسی به داده های مدل های گردش کلی سری CMIP5 تسهیل گردید، به طوریکه هم اکنون اغلب پژوهش های مرتبط با پیشنگری تغییر اقلیم با بکارگیری داده های مدل های CMIP5 انجام م...
Global mean temperature over 1998 to 2015 increased at a slower rate (0.1 K decade-1) compared with the ensemble mean (forced) warming rate projected by Coupled Model Intercomparison Project 5 (CMIP5) models (0.2 K decade-1). Here we investigate the prospects for this slower rate to persist for a decade or more. The slower rate could persist if the transient climate response is overestimated by...
تغییر اقلیم با توجه به ظرفیت محدود اکوسیستمها میتواند موجب بروز مشکلاتی در تأمین آب قابل دسترس برای رفع نیاز بشر شود و بر توانایی منطقهای در مواجهه با بلایای طبیعی مرتبط با آب تأثیر بگذارد. یکی از مشخصههای طبیعی رودخانۀ گاماسیاب احتمال وقوع سیلاب و خطرات ناشی از آن است. بنابراین مطالعات هیدرولوژیکی تحت شرایط تغییر اقلیم برای ساماندهی و مدیریت آن ضروری است. لزوم استفاده از مدلهای سری CMIP5...
Understanding how predicted species responses to climate change are affected by advances in climate modeling is important for determining the frequency with which vulnerability assessments need to be updated. We used ecological niche models to compare predicted climatic habitat suitability for 132 species of reptiles and amphibians in California, USA under the previous and current generations o...
20 Twenty-first century projections of Atlantic climate change are downscaled to explore the 21 robustness of potential changes in hurricane activity. Multi-model ensembles using the 22 CMIP3/A1B (Late 21 st century) and CMIP5/RCP4.5 (Early and Late 21 st century) scenarios are 23 examined. Ten individual CMIP3 models are downscaled to assess the spread of results among 24 the CMIP3 (but not th...
Assessing the uncertainties and understanding the deficiencies of climate models are fundamental to developing adaptation strategies. The objective of this study is to understand how well Coupled Model Intercomparison-Phase 5 (CMIP5) climate model simulations replicate ground-based observations of continental drought areas and their trends. The CMIP5 multimodel ensemble encompasses the Climatic...
The historical simulations of sea ice during 1979 to 2005 by the Coupled Model Intercomparison Project Phase 5 (CMIP5) are compared with satellite observations, Global Ice-Ocean Modeling and Assimilation System (GIOMAS) output data and Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) output data in this study. Forty-nine models, almost all of the CMIP5 climate models and earth sys...
The tropospheric and stratospheric temperature trends and uncertainties in the fifth Coupled Model Intercomparison Project (CMIP5) model simulations in the period of 1979–2005 have been compared with satellite observations. The satellite data include those from the Stratospheric Sounding Units (SSU), Microwave Sounding Units (MSU), and the Advanced Microwave Sounding Unit-A (AMSU). The results ...
This study provides insight into how CMIP5 climate models perform in simulating summer and winter precipitation at different geographical locations and climate conditions. Precipitation biases in the CMIP5 historical (1901 to 2005) simulations relative to the Climatic Research Unit (CRU) observations are evaluated over 8 regions exhibiting distinct seasonal hydroclimates: moist tropical (Amazon...
The Australian Community Climate and Earth System Simulator (ACCESS) coupled climate model version 1.3 participated in phase five of the Coupled Model Intercomparison Project (CMIP5) with an initial contribution of high priority experiments. Further standard experiments have since been conducted with ACCESS1.3, including an ensemble of three simulations for the historical period (1850–2005) for...
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