How dependent is climate change projection of Indian summer monsoon rainfall and extreme events on model resolution? (Record no. 60497)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02385nam a2200205Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Rajendran K |
| 245 #0 - TITLE STATEMENT | |
| Title | How dependent is climate change projection of Indian summer monsoon rainfall and extreme events on model resolution? |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Current Science |
| Year of publication | 2013 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 1409-1418 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Advances in climate modelling now provide the opportunity for utilizing global general circulation models (GCMs) at very high resolution for projections of future climate and extreme events. Diagnostics of global atmospheric GCM simulations at different horizotal resolutions of 20,60,120 and 180 km reveals the marked skill of 20 km mesh GCM (MRI-AGCM3.2S) in capturing regional characteristics of climatological summer monsoon railfall over India and its frequency distribution, and mean annual variation of rainfall over most of the homogeneous regions of India. Future projections by time-slice simulations of MRI-AGCM3.2S under global warming scenario show widespread but spatially varying increase in rainfall over interior regions of peninsular, west central, central northeast and North East India (~5-20;of seasonal mean) and significant reduction in orographic rainfall over the west coast (~10-15;, consistent with the recent observed trends). MRI-AGCM3.2S projects spatially heterogeneous increase in warm days and extreme hot events (highest decile) over India. Projected changes in extreme rainfall events (above 95 percentile) show intensification of extreme rainfall over most parts of India by the end of the century with opposite change over the west coast. Ultra-high-resolution is found to be crucial not only for realistic mean summer monsoon simulation, but for achieving useful future projections of Indian monsoon and extremes. At lower resolution, the simulations fail to capture the observed characteristics of present-day monsoon rainfall and its spatial heterogeneity, and projections lackuseful regional climate information. Thus, consideration of fine scale processes are critical for reasonable probabilistic projection of regional scale climate change. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Climate change projection |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Extreme events |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | General circulation model |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Ultra-high resolution |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Jayasankar CB |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kitoh A |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sajani S |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Climate change | 01/01/2021 | Volume 104, Issue 10 | Journals |