Cycle 22r3 summary of changes

27 June 2000 Introduction of Cy22r3.This new version includes:

1. new parametrization schemes for the land surface, lying snow and sea-ice;

2. new (RRTM) long wave radiation scheme;

3. improved ozone model;

4. use more TOVS/ATOVS data (HIRS-12, AMSU-14; less constraint on AMSU-8; more off-nadir data)

5. revised snow analysis;

6. revised observation and background error variances;

7. use of buoys platform heights;

8. digital filter for gravity wave constraint.


Cycle changes

Please note

Prior to 2006 information on cycle upgrades has been migrated from the old website to the new website "as is". The information has not been reviewed during the migration.