FAQ

What rainfall products do TAMSAT provide?

What is the spatial resolution and coverage of TAMSAT rainfall estimates?

What is the temporal resolution of TAMSAT rainfall estimates?

What is the temporal range of TAMSAT rainfall estimates?

What is the latency of TAMSAT rainfall estimates?

What is the format of TAMSAT rainfall estimates?

What is the latest version of TAMSAT rainfall estimates?

What is the difference between V2.0 and V3.0?

How can I access TAMSAT rainfall estimates?

What publications should I cite when using TAMSAT data?

Are TAMSAT products free to use and what license are the data under?


What rainfall products do TAMSAT provide?
  • rainfall estimates
  • anomalies with respect to the 1983-2012 (30-year) average
  • climatologies

 

What is the spatial resolution and coverage of TAMSAT rainfall estimates?

TAMSAT rainfall estimates are provided at 0.0375 x 0.0375 degree spatial resolution (~4km) for all land points on the African continent, including Madagascar.

Estimates are also given for parts of the Middle East, although as the rainfall over these regions is not always convective in nature, no guarantee can be given to the reliability of such estimates.

 

What is the temporal resolution of TAMSAT rainfall estimates?

TAMSAT rainfall estimates are provided at the following time steps:

  • daily
  • pentadal (5-day)
  • dekadal (10-day)
  • monthly 
  • seasonal (Dec-Feb, Mar-May, Jun-Aug, Sep-Nov)

 

What is the temporal range of TAMSAT rainfall estimates?

Rainfall estimates are available from Jan 1983 to near-real time.

 

What is the latency of TAMSAT rainfall estimates?

Estimates are available within 2 days at the end of each pentad (i.e. 2nd, 7th, 12th, 17th, 22nd and 27th). ***Please note that due to current technical problems, TAMSAT estimates can only be guaranteed to be available within 5-day of the end of each pentad***.

 

What is the format of TAMSAT rainfall estimates?

Estimates are provided in netCDF format. Quick look images are also provided in PNG format.

 

What is the latest version of TAMSAT rainfall estimates?

The latest version is 3.0 (released January 2017), which supersedes V2.0.

 

What is the difference between V2.0 and V3.0?

TAMSAT V3.0 overcomes two problems associated with V2.0:

  1. spatial artefacts arising from the use of rectangular calibration zones
  2. a dry bias (in the order of 20%)

As such, we recommend users who are currently using V2.0 to switch to V3.0. 

 

How can I access TAMSAT rainfall estimates?

Estimates can be downloaded in several ways:

 

What publications should I cite when using TAMSAT data?

We suggest users should cite the following publications when using TAMSAT data:

 

Are TAMSAT products free to use and what license are the data under?

All TAMSAT data are free to use and are released for operational, research and commercial use under a creative commons license.