نتایج جستجو برای: hadcm3 model

تعداد نتایج: 2104699  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Terry L Root Dena P MacMynowski Michael D Mastrandrea Stephen H Schneider

Average global surface-air temperature is increasing. Contention exists over relative contributions by natural and anthropogenic forcings. Ecological studies attribute plant and animal changes to observed warming. Until now, temperature-species connections have not been statistically attributed directly to anthropogenic climatic change. Using modeled climatic variables and observed species data...

2014
WILLIAM H. G. ROBERTS DAVID S. BATTISTI ALEXANDER W. TUDHOPE

The offline linearized ocean–atmosphere model (LOAM), which was developed to quantify the impact of the climatological mean state on the variability of the El Ni~ no–Southern Oscillation (ENSO), is used to illuminate why ENSO changed between the modern-day and early/mid-Holocene simulations in two climate modeling studies using the NCAR Climate System Model (CSM) and the Hadley Centre Coupled M...

2006
J. Brown

The sensitivity of El Niño-Southern Oscillation (ENSO) to changes in mean climate is investigated for simulations of pre-industrial and mid-Holocene (6000 years before present) climate using the Hadley Centre coupled atmosphere-ocean model, HadCM3. Orbitally-forced changes in insolation in the mid-Holocene produce changes in seasonality which may alter ENSO amplitude and frequency. The model si...

Journal: :Atmosphere 2022

Climate change is one of the leading issues affecting river basins due to its direct impacts on cryosphere and hydrosphere. General circulation models (GCMs) are widely applied tools assess climate but coarse spatial resolution GCMs limit their application for local studies. This study selected five CMIP5 (CCSM4, HadCM3, GFDL-CM3, MRI-CGCM3 CanESM2) performance evaluation ranked by Nash–Sutclif...

زمینه و هدف : تغییر اقلیم و گرمایش جهانی یکی از گسترده­ترین و مهم ترین مخاطرات زیست محیطی است. هدف این مطالعه بررسی روند دمای حداقل، حداکثر و بارندگی در دوره گذشته بوشهر به عنوان استان ساحلی خلیج فارس و پیش­بینی آینده اقلیمی آن تا انتهای سال 2100 میلادی و همچنین اثرات احتمالی پیش­بینی شده بر اکوسیستم های جنگلی مانگرو خلیج فارس می باشد. روش بررسی: در این مطالعه...

2016
D. A. Sachindra B. J. C. Perera

This paper presents a novel approach to incorporate the non-stationarities characterised in the GCM outputs, into the Predictor-Predictand Relationships (PPRs) in statistical downscaling models. In this approach, a series of 42 PPRs based on multi-linear regression (MLR) technique were determined for each calendar month using a 20-year moving window moved at a 1-year time step on the predictor ...

Abstract In this study, the predicted monthly temperature and rainfall data from HadCM3 model (base period, ۱۹۷۲-۲۰۰۱) and next period (۲۰۱۱-۲۰۴۰) under A2emission scenario were used to investigate the impacts of climate change on runoff variations in the Kor river basin. HadCM3 model output was downscaled based on a temporal downscaling approach (Change Factor) and spatial downscaling appro...

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