Global budget of ethane and regional constraints on U.S. sources

Global budget of ethane and regional constraints on U.S. sources

[1] We use a 3-D chemical transport model (the GEOS-Chem CTM) to evaluate a global emission inventory for ethane (C2H6), with a best estimate for the global source of 13 Tg yr , 8.0 Tg yr 1 from fossil fuel production, 2.6 Tg yr 1 from biofuel, and 2.4 Tg yr 1 from biomass burning. About 80% of the source is emitted in the Northern Hemisphere. The model generally provides a reasonable and unbia...

Regional and global ozone budget

Tropospheric ozone budget: regional and global calculations F. M. O’Connor, K. S. Law , J. A. Pyle, H. Barjat , N. Brough, K. Dewey, T. Green, J. Kent, and G. Phillips c NCAS-Atmospheric Chemistry Modelling Support Unit, Centre for Atmospheric Science, University of Cambridge, United Kingdom Centre for Atmospheric Science, University of Cambridge, United Kingdom Met. Research Flight, United Kin...

Observational constraints on the global atmospheric budget of ethanol

Energy security and climate change concerns have led to the promotion of biomass-derived ethanol, an oxygenated volatile organic compound (OVOC), as a substitute for fossil fuels. Although ethanol is ubiquitous in the troposphere, our knowledge of its current atmospheric budget and distribution is limited. Here, for the first time we use a global chemical transport model in conjunction with atm...

Policy Punctuations : US Budget

Titan's carbon budget and the case of the missing ethane.

The retrieval of data from the Cassini-Huygens mission has revealed much about Titan's atmospheric-surface system and has precipitated more questions. One of these questions involves the lack of large reservoirs of ethane that were predicted by a variety of studies prior to the arrival of the Cassini-Huygens spacecraft. Using an updated and comprehensive photochemical model, we examine the natu...