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Methane

Other Names

CH4, Marsh Gas

Definition

Methane, a colorless and inflammable gas, is most abundant in the troposphere
Methane is a strong greenhouse gas and an important source of stratospheric water vapor that contributes to global warming. The concentration of methane has doubled since pre-industrial times. The atmospheric mixing ratio of methane is currently about 1.7 parts per million. This increase is attributed to the intensified human activity in the agriculture, biomass burning, and fossil fuel consumption. The atmospheric lifetime of methane is about eight years. It reacts with atmospheric hydroxyl(OH) in the troposphere froming the formaldehyde (HCHO),carbon monoxide(CO) and Ozone (O3).

Applications

(1) Atmospheric Chemistry Models (5) Tracer of Air Motions
(2) Air Quality (6) stratosphere-troposphere exchange
(3) Monitoring of Biomass Burning (7) Climate Change
(4) Health and Environment  

GES DISC Datasets

Quick Search for 'Methane' with Mirador
Click on the corresponding 'Data access' links in the table below to access products containing specific parameter.

ParameterUnitsPlatform /InstrumentData Products
Begin DateEnd DateData AccessDoc
Methane (CH4) ProfilesvmrAura/HIRDLS2004-07-15CurrentHIRDLS2Y
UARS/HALOE1991-10-112005-11-21UARHA2FNY
Aqua/AIRS2002-08-30CurrentAIRS Level2Y
AIRS Level3Y
Methane (CH4) Column Densitymolecules/cm2Aqua/AIRS2002-08-30CurrentAIRS Level2Y
AIRS Level3Y
Methane (CH4) Profiles, mixing ratios at different pressure levels (Global Gridded, at equal intervals of latitude/or equal intervals of time)vmrAura/HIRDLS2004-07-15CurrentHIRDLS2 Y
UARS/HALOE1991-10-112005-11-21UARHA3ATY
UARS/CLAES1991-10-251993-05-05UARCL3ATY
UARCL3ALY
UARS/ISAMS1991-09-261992-07-29UARIS3ATY
UARIS3ALY

Other sources for data

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Last updated: May 01, 2013 02:03 PM ET