Global Change Master Directory gsfc-gcmduso@mail.nasa.gov 50 2013-06-19T03:33:51Z GCMD Search: [Parameters: Topic='ATMOSPHERE', Term='ATMOSPHERIC CHEMISTRY', Variable_Level_1='TRACE GASES/TRACE SPECIES', Detailed_Variable='2-METHYL-2-BUTENE'] http://mddemo.gsfc.nasa.gov/KeywordSearch/OpenSearch.do 2 0 http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]AMERIFLUX_HC_HF_CDIAC Harvard Forest AmeriFlux Hourly Hydrocarbon Measurements: 1992-1995, from CDIAC -72.0,42.0,-72.0,42.0 1992-01-01T00:00:00Z 1995-12-31T00:00:00Z 2009-04-20T04:00:00Z The Harvard Forest environmental measurement site is part of the AmeriFlux network of field research projects quantifying the exchange of carbon dioxide between terrestrial ecosystems ... http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]AMERIFLUX_HARVARDFOREST_CDIAC Long-Term CO2 Flux Measurements at Harvard Forest from the AmeriFlux Program: 1990-1996, at CDIAC -72.0,42.0,-72.0,42.0 1990-01-01T00:00:00Z 1996-12-31T00:00:00Z 2009-04-20T04:00:00Z The Harvard Forest environmental measurement site is part of the AmeriFlux network of field research projects quantifying the exchange of carbon dioxide between terrestrial ecosystems ...