Mapping Recent Decadal Climate Variations in Precipitationand Temperature across Eastern Africa and the Sahel
نویسندگان
چکیده
منابع مشابه
A Note on Bjerknes' Hypothesis . . .
Bryan. K. and Stouffer. R.. 1991. A note on Bjerknes' hypothesis for North Atlantic VOiriOibililY. J. ~IOIr. SYSI.. 1: 229-241 On decadal time-scales the historical surface temperature record over land in the Northern Hemisphere is dominated by polar amplified variations. These variations are coherent ~.ith SST anomalies concentrated in the Northwest Atlantic. but extending with lesser amplitud...
متن کاملGlobal Variations in Droughts and Wet Spells: 1900-1995
The Palmer Drought Severity Index (PDSI) was calculated globally using gridded monthly air temperature and precipitation. From 1900 to 1995, there are large multiyear to decadal variations in the percentage areas in severe drought (PDSI < −3.0) and severe moisture surplus (PDSI > +3.0) over many land areas while secular trends are small. Since the late 1970s, however, there have been some incre...
متن کاملImpacts of projected changes and variability in climatic data on major food crops yields in Rwanda
This paper investigated the response of major food crop yields namely beans,cassava, Irish potatoes, maize and sweet potatoes to ongoing changes in climate inRwanda. The projected daily precipitation and temperature data for the period2000-2050 used in this study were generated by stochastic weather generator(LARS-WG) from daily raw data for the period 1961 -2000. These data werecollected from ...
متن کاملCross-Cutting Topic: Decadal Prediction
There are many examples of extreme climate variations on decadal timescales, many of which are associated with human death and misery. Perhaps the most striking in recent decades is the decadal timescale drought in the Sahel (leading, for example, to the remarkable Band-Aid Concerts). Other decadal-timescale droughts, such as the “dust-bowl” drought in the Southern US in the 1930s, are infamous...
متن کاملEl Niño/La Niña and Sahel Precipitation During the Middle Holocene
Simulations with a synchronously coupled atmosphere-land-ocean-sea ice model indicate El Niño/La Niña-like events in the eastern tropical Pacific Ocean during the middle Holocene (6 ka) with similar intensities and frequencies as at present (0 ka). July-August-September Sahel precipitation shifts northward as expected from proxy data. For presentday, interannual-decadal variability of western S...
متن کامل