Methane, Ozone & Other Trace Gases

Thursday, November 17, 2016 -
09:00 to 10:00


-          Introductions/Role Call (ALL) – 5min

-          Update: Brief update on Climatology Paper (Crepinsek, McClure) – 15min

-          Discussion of working group action items/future goals: (ALL) – 20min


IASOA Ozone Working Group

November 17, 2016


Attendees: Sara Crepinsek, Irina Petropavlovskikh, Audra McClure, Xin Yang, Bahramvash Shima, David Tarasick, Henrik Skov


Introduction of group members

Update on Ozone Climatology Publication – consider including ozonesonde data to increase time series – strong trend at Resolute and Churchill, correlation with surface ozone data and ozonesonde data, consider time frame or publication, want to have same time period across each station if looking for comparisons across stations, but can use past data if average year trends, changes in boundary layer, strength of boundary layer, boundary layer height is important and should be considered, look at statistics of when we have depletion and how deep those depletions are, long term trends will be easy to pull out of ozonesondes as well, different definitions of boundary layer heights, in the Arctic is usually an inversion so hopefully will be straight forward, get algorithm from David Tarasick on boundary layer definitions and heights, will contact Tarasick, Helmig, and Skov and his colleague regarding participation and assistance of data analysis and algorithms for climatology publication


Update on Eureka Surface Ozone Data – show where data is available on PSD ftp website and GMD ftp website, all plots have calibration applied, but is raw data without quality control

PSD ftp:

GMD ftp:


Discussion of Working Group Action Items/Future Goals – re-assess working group’s key science questions, discuss which key science questions are still relevant to future goals of the group, need to narrow down key science questions for near future goals and will revisit other science questions as we progress and evolve, should consider vertical trace gases as well as surface, and also consider focusing on other trace gases, discuss a goal of defining methodology for quality control of data sets – i.e. address if old data sets are up to par with new data quality control methods, derive a document of quality control for Arctic environment (might be different than procedures at other lower latitude stations), move in direction of defining who can move group toward: 1) defining standardized data management, 2) using consistent cold weather observing practices at the IASOA stations, defining data quality control procedures, determining what observations the metadata community would like to see in a merged observational data set


Action Items:

  • Invite Owen Cooper to next working group meeting (Crepinsek)
  • Invite Skov colleague to assist with boundary height analysis (Crepinsek)
  • Email Henrik Skov and Detlev Helmig for participation in climatology publication (Crepinsek)
  • Email David Tarasick about assistance with boundary layer algorithm for climatology publication (Crepinsek)
  • Begin email conversation among working group member to re-define and focu key science questions (Crepinsek)
  • Define clean air sector for climatology publication (Uttal, Petropavlovskikh, Crepinsek)
  • Xin Yang to possibly present at next meeting (Crepinsek)
  • List of who is attending AGU to set up possible IASOA meeting (Crepinsek)