CLIMATE IN THE 21ST CENTURY: DIFFERENT SCENARIOS RCP 8.5 RCP 2.6 Change in avera
ID: 119351 • Letter: C
Question
CLIMATE IN THE 21ST CENTURY: DIFFERENT SCENARIOS RCP 8.5 RCP 2.6 Change in average surface temperature (1988-2005 to 2081-2100) 30 Cc) 2 -1.5-1 -05 0 05 1 1.5 2 3 4 5 79 11 Change in average precipitation (1986-2005 to 2081-2100) 39 32 -50 40 -30-20 -10 0 10 20 30 4050 Fig. 33.1 Maps of CMIP5 multi-model mean results for the scenarios RCP2.6 and RCP8.5 in 2081-100 of (a) annual mean surface temperature change and (b) average per cent change in annual mean precipitation. Changes are shown relative to 1986-2005. The number of CMIP5 models used to calculate the multi-model mean is indicated in the upper right corner of each panel. Hatching indicates regions where the multi-model mean is small compared to natural internal variability (i.e. less than one standard deviation of natural internal variability in 20year means). Stippling indicates regions where the multi-model mean is large compared to natural internal variability (i.e. greater than two standard deviations of natural internal variability in 20 year means). Source: IPCC 2013. Climate Change 2013: The Physical Science Basis. Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Figure SPM 8. Cambridge University Press
Explanation / Answer
Surface temperature and precipation is directly related to each other. pressure and temperature are the two key player in movement of air parcel. over the tropic region ITCZ play a major role in precipitation. the winds associated with ICTZ brings lot of moisture from the ocean to precipitate underneath the region. But at the same time due to the divergence nature of winds (westerlies) in the subtropic the region got drier. while at higer latitudes polar easterlies brings lot of moisture form polar region and we get more precipitation at polar low region (60 deg latitude).
Note: Check once global wind pattern for visualisation.