1. NOAA Mobile Lab Preliminary Results November 2011 Drives Gaby Petron, Jon Kofler, Ben Miller, Colm Sweeney, Laura Patrick Pete Edwards, Bill Dube, Steve Brown NOAA ESRL 1

2. 11/2/11 11/3/11 NOxCaRD NO2 & Total NOx Measurements Pete Edwards, William Dube, Steve Brown 2

3. Background NO x Truck spikes Zoom on two periods 3

4. nbutane vs propane Oil well Ponds Gas wells VOC Data: Ben Miller, Steve Montzka 4

5. nbutane versus methane VOC Data: Ben Miller, Steve Montzka CH4 Data: Pat Lang, Ed Dlugokencky 5 Oil wells Gas wells Ponds

6. Google Earth Files ftp://ftp.cmdl.noaa.gov/incoming/petron/UBS/ One O 3 file: 2-minute averages - ppb Two CH 4 files: 2 sec data - ppb Note: for CH 4, the color scale saturates at 2.5ppm. CH 4 levels went up to 15 ppm downwind of some wells 6