See also: ICA&D KNMI Climate Explorer
 
 

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Comparing SA-OBS v2.0 and v1.0

Contents

Click on the figures for larger ones.

This page shows changes between SA-OBS v2.0 (released September 2018) and SA-OBS v1.0 (released April 2017). SA-OBS v2.0 spans 1981-01-01 to 2017-12-31 and SA-OBS v1.0 spans 1981-01-01 to 2014-08-31.

 

Changes in input data

  • Updates are included for Singapore, Indonesia and Australia
  • Additional series have been included for GHCN-D
  • Database has been cleaned from duplicate series
  • Synoptical messages from the GTS network are used for a maximum of 10 years if no other data is available. See chapter 4 of the Algorithm Theoretical Basis Document (ATBD) for more details.

Precipitation (RR)

Comparing DJF and JJA 2000


The figures show DJF (left) and JJA (right) differences in precipitation amount (mm/3 months) for the year 2000 between SA-OBS v2.0 and v1.0. The differences correspond to areas where new series or stations have been included for the year 2000.

 

Difference in 1981-2010 climatology




This figure shows the difference in annual 1981-2010 climatology for precipitation amount (mm/year) between SA-OBS v2.0 and v1.0. The differences correspond to areas where new stations or series have been included.

 

Standard deviation in daily differences

This figure shows the standard deviation in daily differences for precipitation amount (mm/day) between SA-OBS v2.0 and v1.0. The differences correspond to areas where new stations or series have been included.

 

Mean temperature (TG)

Comparing DJF and JJA 2000


The figures show DJF (left) and JJA (right) differences in mean temperature (°C) for the year 2000 between SA-OBS v2.0 and v1.0. The differences correspond to areas where new series or stations have been included for the year 2000.

 

Difference in 1981-2010 climatology




This figure shows the difference in annual 1981-2010 climatology for mean temperature (°C) between SA-OBS v2.0 and v1.0. The differences correspond to areas where new stations or series have been included.

 

Standard deviation in daily differences

This figure shows the standard deviation in daily differences for mean temperature (°C) between SA-OBS v2.0 and v1.0.