Dehydration in the tropical tropopause layer: Implications from the UARS Microwave Limb Sounder

被引:31
作者
Read, WG
Wu, DL
Waters, JW
Pumphrey, HC
机构
[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[2] Univ Edinburgh, Dept Meteorol, Edinburgh EH9 3JZ, Midlothian, Scotland
关键词
UARS Microwave Limb Sounder water vapor measurements; dehydration in the tropical tropopause layer; seasonal evolution of water vapor in the upper troposphere/lower stratosphere;
D O I
10.1029/2003JD004056
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
[1] Measurements of H2O from the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite (UARS) are used to investigate the structure of H2O in the near tropopause region and dehydration mechanisms in the tropical tropopause layer (TTL). The new MLS data are consistent with convective input of H2O into the bottom of the TTL followed by slow ascent with a maximum relative amplitude in the seasonal cycle occurring near the tropopause nearly in phase with the tropopause temperature seasonal cycle. The relative amplitude of the seasonal cycle shows a minimum at 121 hPa in the upwelling moist phase. These features are reproduced with the "cold-trap'' dehydration hypothesis. Seasonal maps show wettest tropical 100 hPa H2O colocated with continental convection.
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页数:11
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共 41 条
[1]   THE UPPER-ATMOSPHERE RESEARCH SATELLITE MICROWAVE LIMB SOUNDER INSTRUMENT [J].
BARATH, FT ;
CHAVEZ, MC ;
COFIELD, RE ;
FLOWER, DA ;
FRERKING, MA ;
GRAM, MB ;
HARRIS, WM ;
HOLDEN, JR ;
JARNOT, RF ;
KLOEZEMAN, WG ;
KLOSE, GJ ;
LAU, GKK ;
LOO, MS ;
MADDISON, BJ ;
MATTAUCH, RJ ;
MCKINNEY, RP ;
PECKHAM, GE ;
PICKETT, HM ;
SIEBES, G ;
SOLTIS, FS ;
SUTTIE, RA ;
TARSALA, JA ;
WATERS, JW ;
WILSON, WJ .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1993, 98 (D6) :10751-10762
[2]   A model of HDO in the tropical tropopause layer [J].
Dessler, AE ;
Sherwood, SC .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2003, 3 :2173-2181
[3]   Determination of the amount of water vapor entering the stratosphere based on Halogen Occultation Experiment (HALOE) data [J].
Dessler, AE ;
Kim, H .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1999, 104 (D23) :30605-30607
[4]   Space-time variations in water vapor as observed by the UARS microwave limb sounder [J].
Elson, LS ;
Read, WG ;
Waters, JW ;
Mote, PW ;
Kinnersley, JS ;
Harwood, RS .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1996, 101 (D4) :9001-9015
[5]   Transport of water vapor in the tropical tropopause layer [J].
Gettelman, A ;
Randel, WJ ;
Wu, F ;
Massie, ST .
GEOPHYSICAL RESEARCH LETTERS, 2002, 29 (01) :9-1
[6]   The Atmospheric Trace Molecule Spectroscopy (ATMOS) experiment: Deployment on the ATLAS Space Shuttle missions [J].
Gunson, MR ;
Abbas, MM ;
Abrams, MC ;
Allen, M ;
Brown, LR ;
Brown, TL ;
Chang, AY ;
Goldman, A ;
Irion, FW ;
Lowes, LL ;
Mahieu, E ;
Manney, GL ;
Michelsen, HA ;
Newchurch, MJ ;
Rinsland, CP ;
Salawitch, RJ ;
Stiller, GP ;
Toon, GC ;
Yung, YL ;
Zander, R .
GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (17) :2333-2336
[7]   The heat balance of the tropical tropopause, cirrus, and stratospheric dehydration [J].
Hartmann, DL ;
Holton, JR ;
Fu, Q .
GEOPHYSICAL RESEARCH LETTERS, 2001, 28 (10) :1969-1972
[8]   Horizontal transport and the dehydration of the stratosphere [J].
Holton, JR ;
Gettelman, A .
GEOPHYSICAL RESEARCH LETTERS, 2001, 28 (14) :2799-2802
[9]   STRATOSPHERE-TROPOSPHERE EXCHANGE [J].
HOLTON, JR ;
HAYNES, PH ;
MCINTYRE, ME ;
DOUGLASS, AR ;
ROOD, RB ;
PFISTER, L .
REVIEWS OF GEOPHYSICS, 1995, 33 (04) :403-439
[10]   High humidities and subvisible cirrus near the tropical tropopause [J].
Jensen, EJ ;
Read, WG ;
Mergenthaler, J ;
Sandor, BJ ;
Pfister, L ;
Tabazadeh, A .
GEOPHYSICAL RESEARCH LETTERS, 1999, 26 (15) :2347-2350