Diabatic subsidence in the subtropical upper troposphere derived from SAGE II measurements

W. Y. Lin; M. H. Zhang; M. A. Geller

doi:10.1029/1998GL900125

Diabatic subsidence in the subtropical upper troposphere derived from SAGE II measurements

Stony Brook University

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2 Scopus citations

Abstract

Composite diabatic subsidence rates in the subtropical upper troposphere are derived using water vapor measurements of high vertical resolution from SAGE II in conjunction with collocated ECMWF reanalysis. Their relationship with the concentration of upper tropospheric water vapor is examined. The mean vertical profiles of subsidence rate show a monotonic increase in downward mass flux from the tropopause down to at least 400 mb reaching a magnitude of 22 mb day^-1. This vertical structure of subsidence suggests horizontal mass convergence and horizontal moisture transport at all levels above 400 mb. Seasonal variation of upper tropospheric subsidence is also presented.

Original language	English
Pages (from-to)	4181-4184
Number of pages	4
Journal	Geophysical Research Letters
Volume	25
Issue number	22
DOIs	https://doi.org/10.1029/1998GL900125
State	Published - Nov 15 1998

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10.1029/1998GL900125

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title = "Diabatic subsidence in the subtropical upper troposphere derived from SAGE II measurements",

abstract = "Composite diabatic subsidence rates in the subtropical upper troposphere are derived using water vapor measurements of high vertical resolution from SAGE II in conjunction with collocated ECMWF reanalysis. Their relationship with the concentration of upper tropospheric water vapor is examined. The mean vertical profiles of subsidence rate show a monotonic increase in downward mass flux from the tropopause down to at least 400 mb reaching a magnitude of 22 mb day-1. This vertical structure of subsidence suggests horizontal mass convergence and horizontal moisture transport at all levels above 400 mb. Seasonal variation of upper tropospheric subsidence is also presented.",

author = "Lin, \{W. Y.\} and Zhang, \{M. H.\} and Geller, \{M. A.\}",

year = "1998",

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doi = "10.1029/1998GL900125",

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journal = "Geophysical Research Letters",

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AU - Lin, W. Y.

AU - Zhang, M. H.

AU - Geller, M. A.

PY - 1998/11/15

Y1 - 1998/11/15

N2 - Composite diabatic subsidence rates in the subtropical upper troposphere are derived using water vapor measurements of high vertical resolution from SAGE II in conjunction with collocated ECMWF reanalysis. Their relationship with the concentration of upper tropospheric water vapor is examined. The mean vertical profiles of subsidence rate show a monotonic increase in downward mass flux from the tropopause down to at least 400 mb reaching a magnitude of 22 mb day-1. This vertical structure of subsidence suggests horizontal mass convergence and horizontal moisture transport at all levels above 400 mb. Seasonal variation of upper tropospheric subsidence is also presented.

AB - Composite diabatic subsidence rates in the subtropical upper troposphere are derived using water vapor measurements of high vertical resolution from SAGE II in conjunction with collocated ECMWF reanalysis. Their relationship with the concentration of upper tropospheric water vapor is examined. The mean vertical profiles of subsidence rate show a monotonic increase in downward mass flux from the tropopause down to at least 400 mb reaching a magnitude of 22 mb day-1. This vertical structure of subsidence suggests horizontal mass convergence and horizontal moisture transport at all levels above 400 mb. Seasonal variation of upper tropospheric subsidence is also presented.

UR - https://www.scopus.com/pages/publications/0032534189

U2 - 10.1029/1998GL900125

DO - 10.1029/1998GL900125

M3 - Article

AN - SCOPUS:0032534189

SN - 0094-8276

VL - 25

SP - 4181

EP - 4184

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 22

ER -

Diabatic subsidence in the subtropical upper troposphere derived from SAGE II measurements

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