Brewer-Dobson circulation diagnosed from JRA-55
نویسندگان
چکیده
منابع مشابه
What Drives the Brewer–Dobson Circulation?
Recent studies have revealed strong interactions between resolvedRossby wave and parameterized gravity wave driving in stratosphere-resolving atmospheric models. Perturbations to the parameterized wave driving are often compensated by opposite changes in the resolved wave driving, leading to ambiguity in the relative roles of these waves in driving the Brewer–Dobson circulation. Building on pre...
متن کاملVariability of the Brewer-Dobson circulation
This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract We use Aura/MLS stratospheric water vapor measurements to infer interannual variations in the speed of the Brewer-Dobson circulation (BDC) from 2004 to 2011. Strato-spheric water vapor (H 2 O) is utilized as a tracer ...
متن کاملThe signature of the stratospheric Brewer-Dobson circulation in tropospheric clouds
[1] The signature of the stratospheric Brewer-Dobson circulation (BDC) in tropospheric cloudiness is investigated in CloudSat and CALIPSO data from June 2006 through April 2011. During the Northern Hemisphere winter, periods of enhanced stratospheric wave driving are associated with increased cloud incidence in the tropical tropopause transition layer (TTL) juxtaposed against decreased cloud in...
متن کاملStratospheric versus Tropospheric Control of the Strength and Structure of the Brewer–Dobson Circulation
The strength and structure of the Brewer–Dobson circulation (BDC) are explored in an idealized general circulation model. It is shown that diabatic forcing of the stratosphere and planetary wave forcing by the troposphere can have comparable effects on tracer transport through the stratosphere, as quantified by the mean age of air and age spectrum. Their impact, however, is mediated through dif...
متن کاملThe Strength of the Brewer–Dobson Circulation in a Changing Climate: Coupled Chemistry–Climate Model Simulations
The strength of the Brewer–Dobson circulation (BDC) in a changing climate is studied using multidecadal simulations covering the 1960–2100 period with a coupled chemistry–climate model, to examine the seasonality of the change of the BDC. The model simulates an intensification of the BDC in both the past (1960–2004) and future (2005–2100) climate, but the seasonal cycle is different. In the pas...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2016
ISSN: 2169-897X
DOI: 10.1002/2015jd023476