For Brewer Umkehr measurements please see the NEUBrew web page

01/01/2014/

NEUBrew Brewer Umkehr data - find interactive display for Daily Ozone Vertical Profiles and Umkehr N-Values

04/06/2008

The PC based version of the ozone profile retrieval from Brewer Umkehr measurements O3BUmkehr (by Martin Stanek) is available for free installation at http://www.o3soft.eu/o3bumkehr.html

Information about updated Umkehr ozone profile retrieval algorithm UMK04

Download algorithm paper in PDF format.

What is new:
  1. New a priori ozone information:
    Readme file Data
    • based on updated ozone climatology by NASA/Goddard (private communication with G. Labow )
    • higher spatial resolution (10-degree latitude bins, 14 bins from 70 S to 70 N)
    • only seasonal cycle, does not depend on total ozone

  2. Updated forward model (readme file)
    coef_dobacdl.txt coef_dobacdh.txt

  3. Updated inverse model
    • ozone profile retrieval in 61-layers (vertical layer resolution is a quarter of the standard Umkehr layer)
    • Rodgers a priori covariance matrix
    • Solar Zenith Angle dependent error covariance matrix
    • linear in ozone retrieval
Data Evaluation and Validation

Reference for 1992 Umkehr retrieval

irina.petro@noaa.gov