Show simple item record

contributor authorMarsden, David
contributor authorValero, Francisco P. J.
date accessioned2017-06-09T14:38:39Z
date available2017-06-09T14:38:39Z
date copyright2004/03/01
date issued2004
identifier issn0022-4928
identifier otherams-23440.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4160002
description abstractThrough its interaction with radiation, water vapor provides an important link between the ocean and atmosphere. One way this occurs is through the greenhouse effect; observations of water vapor greenhouse absorption in the Gulf of Mexico during the Cirrus Regional Study of Tropical Anvils and Cirrus Layers?Florida Area Cirrus Experiment during July 2002 are reported here. The quantity dGa/dTs is the change in the amount of upwelling infrared flux absorbed by water vapor as the sea surface temperature increases, and therefore parameterizes the strength of the evaporative feedback between the ocean and atmosphere. Using hemispherical infrared broadband (IRBR) and narrow field of view (NFOV) radiometers aboard a NASA ER-2 aircraft, dGa/dTs was measured during flights on 9 and 26 July marked by large-scale convective and quiescent conditions, respectively. Using the NFOV over the wavelength range 4?40 ?m, dGa/dTs = 13.4 ± 1.0 W m?2 K?1 on 9 July, while on 26 July dGa/dTs = 9.7 ± 0.3 W m?2 K?1. The NFOV measurement of dGa/dTs in the 8?12-?m wavelength range yielded values of ?2.5 W m?2 K?1 for both days, indicating that most of the change in greenhouse absorption with increasing ocean temperature occurs in the rotational and vibrational spectral regions of water vapor. The IRBR measurements yielded higher values of dGa/dTs on both days, but were likely affected by cold clouds in the hemispherical radiometer field of view. These results support the link between greenhouse efficiency, mid- to upper-tropospheric water vapor concentration, and convection.
publisherAmerican Meteorological Society
titleObservation of Water Vapor Greenhouse Absorption over the Gulf of Mexico Using Aircraft and Satellite Data
typeJournal Paper
journal volume61
journal issue6
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/1520-0469(2004)061<0745:OOWVGA>2.0.CO;2
journal fristpage745
journal lastpage753
treeJournal of the Atmospheric Sciences:;2004:;Volume( 061 ):;issue: 006
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record