Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 36, Issue -, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2009GL037593
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- Office of Science, U. S. Department of Energy
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The Time Of Emergence (TOE) of 14 greenhouse gas (GHG)-forced precipitation change hotspots (PSPOTs) is identified from the CMIP3 multi-model ensemble. The TOE is defined as the time in 21st century projections at which the magnitude of the ensemble mean precipitation change signal becomes greater than the uncertainty due to the inter-model spread and the internal model multi-decadal variability. Of the 14 PSPOTS identified, 6 have a TOE in the early decades of the 21st century (northern high latitudes, Mediterranean, and East Africa), 3 in the mid decades (East and South Asia, Caribbean) and 5 in the late decades or beyond (South Africa, Western United States, Amazon Basin, Southern Australia, Central America). The TOE is sensitive to the GHG emission scenario for some of the PSPOTS. The TOE has important implications for the predictability and detection of GHG-forced PSPOTS and for impact and adaptation studies. Citation: Giorgi, F., and X. Bi (2009), Time of emergence (TOE) of GHG-forced precipitation change hot-spots, Geophys. Res. Lett., 36, L06709, doi: 10.1029/2009GL037593.
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