Measurements of stratospheric hydrogen cyanide at McMurdo Station, Antarctica: Further evidence of winter stratospheric subsidence

Journal Article · Wed Nov 29 23:00:00 EST 1989 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JD094iD14p16773· OSTI ID:7129233

Jaramillo, M; Zafra, R.L. de; Barrett, J; Emmons, L K; Solomon, P M ^[1]; Parrish, A : ^[2]

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1. State Univ. of New York, Stony Brook (United States)
2. State Univ. of New York, Stony Brook (United States); Millitech Corp., South Deerfield, MA (United States)

The authors have made measurements of hydrogen cyanide (HCN) in the springtime Antarctic stratosphere using ground-based millimeter wave spectroscopy. They find a steeper decrease in volume mixing ratio with altitude than that found at tropical latitudes, from an assumed value of {approximately}160 pptv in the troposphere to a value of 65 {plus minus} 30 pptv at 40 km, which may be further evidence of substantial vertical subsidence of the Antarctic winter stratosphere.

• OSTI ID: 7129233
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 94:D14; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
290301 -- Energy Planning & Policy-- Environment
Health
& Safety-- Regional & Global Environmental Aspects-- (1992-)
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ANTARCTIC REGIONS
ANTARCTICA
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTIONS
CHEMISTRY
CYANIDES
DATA ANALYSIS
DISTRIBUTION
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
EMISSION SPECTROSCOPY
GEOGRAPHICAL VARIATIONS
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LATITUDE EFFECT
LEVELS
MIXING
PHOTOCHEMICAL REACTIONS
POLAR REGIONS
SPECTROSCOPY
STRATOSPHERE
TROPOSPHERE
VARIATIONS