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- W2023131126 abstract "CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials CR 30:39-52 (2005) - doi:10.3354/cr030039 Construction of climate change scenarios for a tropical monsoon region L. Das1,2, D. Lohar1,* 1Atmospheric Science Research Group, Department of Physics, Jadavpur University, Kolkata 700 032, India2Department of Agricultural Meteorology and Physics, Bidhan Chandra Krishi, Viswavidyalaya, Mohanpur, Nadia 741 252, West Bengal, India *Corresponding author. Email: dlohar_atmos@yahoo.com ABSTRACT: Composite seasonal scenarios (per °C change in global equilibrium mean) were developed for the Indian subcontinent for the period 20102039 using 5 General Circulation Models (GCMs), namely, HadCM2, CSIRO-MK2b, CGCM1, GFDL-R15 and ECHAM4/OPYC3. These scenarios indicate a general warming over the entire region by about 0.3 to 0.6°C (± 0.2°C) with more warming in the northern part and less in the southern part of the country. The study shows pockets of negative and positive changes in rainfall over the study area. Large variations in the estimation of rainfall changes from different models also set the upper and lower limits to more extreme values. Further, scenarios indicate a warming of about 0.4 ± 0.2°C over Gangetic West Bengal (GWB) and surrounding regions in the eastern part of the country. The maximum change in rainfall over this part of the country, according to the scenarios developed, would be 4%. Sub-grid scale seasonal scenarios have been developed over GWB and surrounding regions through statistical downscaling. HadCM2 and ECHAM4/OPYC3 are considered for this purpose, as they more effectively represent spatial and temporal variations in rainfall and temperature over the area. Results reveal more warming (0.3 to 0.9°C) and more rainfall changes (5 to +9%) than the projections developed without downscaling the GCM output. Further, scenarios developed for the winter and pre-monsoon seasons show unusual changes in rainfall and temperature, which may be due to mesoscale activities present in the study area. KEY WORDS: Statistical downscaling · Composite scenarios · Monsoon · Regional anomalies Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in CR Vol. 30, No. 1. Online publication date: December 19, 2005 Print ISSN: 0936-577X; Online ISSN: 1616-1572 Copyright © 2005 Inter-Research." @default.
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- W2023131126 title "Construction of climate change scenarios for a tropical monsoon region" @default.
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