Analyzing the Concurrence of Meteorological Droughts and Warm Periods, with Implications for the Determination of Evaporative RegimeSource: Journal of Climate:;2009:;volume( 022 ):;issue: 012::page 3331DOI: 10.1175/2008JCLI2718.1Publisher: American Meteorological Society
Abstract: The hydroclimatic conditions under which a seasonal meteorological drought (below-normal seasonal rainfall) can induce an increase in seasonal air temperature are investigated, first with an atmospheric general circulation model (AGCM) and then with observations. Geographical differences in the dryness?warmth connection abound in the AGCM; in the United States, for example, identified evaporative controls tend to tie meteorological droughts to warmer temperatures in the South but not in the Northeast. The strong agreement between AGCM and observations-based geographical patterns of drought-induced warming supports the idea that the same evaporative controls are also present in nature. A powerful side benefit of the analysis of drought-induced warming is a Northern Hemisphere map, derived solely from observations, showing where total boreal summer evaporation is controlled by soil moisture, energy availability, or both.
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contributor author | Koster, R. D. | |
contributor author | Schubert, S. D. | |
contributor author | Suarez, M. J. | |
date accessioned | 2017-06-09T16:24:31Z | |
date available | 2017-06-09T16:24:31Z | |
date copyright | 2009/06/01 | |
date issued | 2009 | |
identifier issn | 0894-8755 | |
identifier other | ams-67313.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4208747 | |
description abstract | The hydroclimatic conditions under which a seasonal meteorological drought (below-normal seasonal rainfall) can induce an increase in seasonal air temperature are investigated, first with an atmospheric general circulation model (AGCM) and then with observations. Geographical differences in the dryness?warmth connection abound in the AGCM; in the United States, for example, identified evaporative controls tend to tie meteorological droughts to warmer temperatures in the South but not in the Northeast. The strong agreement between AGCM and observations-based geographical patterns of drought-induced warming supports the idea that the same evaporative controls are also present in nature. A powerful side benefit of the analysis of drought-induced warming is a Northern Hemisphere map, derived solely from observations, showing where total boreal summer evaporation is controlled by soil moisture, energy availability, or both. | |
publisher | American Meteorological Society | |
title | Analyzing the Concurrence of Meteorological Droughts and Warm Periods, with Implications for the Determination of Evaporative Regime | |
type | Journal Paper | |
journal volume | 22 | |
journal issue | 12 | |
journal title | Journal of Climate | |
identifier doi | 10.1175/2008JCLI2718.1 | |
journal fristpage | 3331 | |
journal lastpage | 3341 | |
tree | Journal of Climate:;2009:;volume( 022 ):;issue: 012 | |
contenttype | Fulltext |