Methane, Ozone and Other Trace Gases
Bounding the roles of methane, ozone and trace gases on the Arctic climate with in situ observations
- How can we best define and parse out background ozone levels from measurements?
- What geographical coverage, vertical resolution, sampling frequency, and measurement accuracy are required for a measurement network to understand surface, tropospheric, and stratospheric ozone variability in the Arctic?
- What frequency and accuracy of collocated measurements of VOC/NOx/BrO/isotopes/greenhouse gases are required to attribute Arctic ozone variability to atmospheric processes?
- What is the impact of forest fires and long-range transport on surface and tropospheric ozone and other biomass burning species [CO, C2H6, HCN, HCHO, HCOOH, C2H4, CH3OH, aerosols]?
- How well can Global Transport Chemistry Climate or Arctic regional Models simulate long-term, intra-annual, and seasonal trends and variability in surface and tropospheric ozone?
Co-Chair: Irina Petropavlovskikh (Barrow, Summit)
Co-Chair: Sara Crepinsek (Eureka, Tiksi)
Facilitator: Sara Crepinsek
Audra McClure (Barrow, Summit)
Henrik Skov (Villum)
Mika Vestenius (Pallas)
Mike Shaw (Alert)
Ove Hermansen (Ny-Alesund)
Taneil Uttal (Eureka, Tiksi)
Timo Salmi (Pallas)
Action Items of Working Group:
1) Publication: Climatology of surface ozone at IASOA stations
2) "Gold" product file (merged file for observationalists and modelers) -- identify file type best for scientific community
3) Produce Quality Control Procedure document for Arctic region (procedure for applying calibrations to the data, recommended calibration schedule of instruments, how to flag data, and how to apply quality control parameters)
4) Inventory of ozone/NOx/VOC/BrO/isotop/greenhouse gas measurements at IASOA stations -- identify which are collocated