Research Highlights

Emission estimates from long-term measurements of four new hydrofluorocarbons (HFCs): HFC-245fa, HFC-365mfc, HFC-227ea, and HFC-236fa (2011)

Long-term AGAGE measurements with global coverage are presented for four potent greenhouse gases: a fire-suppressant, a refrigerant, and two commercially-used foam blowing substances.

Renewed Growth of Atmospheric Methane (2008)

After almost a decade with little change in global atmospheric methane mole fraction, measurements from the AGAGE and CSIRO networks show renewed growth starting near the beginning of 2007.

Nitrogen trifluoride in the global atmosphere (2008)

Background atmospheric abundances and trends of nitrogen trifluoride (NF3), a potent anthropogenic greenhouse gas, have been measured for the first time.

Global Budget of Hydrogen determined from Measurement and Modeling (2007)

Hydrogen (H2), a proposed clean energy alternative, warrants detailed investigation of its global budget and future environmental impacts.

What were the trace gas and particulate emissions from the 2003 southern California wildfires? (2007)

In October 2003, thirteen major wildfires in southern California burned more than 300,000 hectares of mainly chaparral biome, strongly impacting an urban area populated by ~20 million people.

Observations of 1,1-difluoroethane (HFC-152a) at AGAGE and SOGE monitoring stations 1994-2004 and derived global and regional emission estimates (2007)

We have taken a 10-year record of observations of a gas used predominantly in hand-held foam blowing canisters and assessed the state of its trends in the atmosphere.

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