Future Weather Generating Tool Updated

Submitted by Cecilia on 20th June 2011
Tags:
Planning for a changing climate
Planning for a changing climate. Photo: P. Casier (CGIAR)

This entry was written by Philip Thornton, CCAFS Theme Leader.

The MarkSim GCM stochastic weather generator tool has just been updated. It now includes data from two additional climate models that were part of the IPCC’s Fourth Assessment Report. Users can now choose from a total of six individual climate models, or they can select the average climatology of this ensemble of models, for generating daily data for future conditions. The climate models come from Australia, France, Germany, Japan, Norway and Russia.

One additional feature that has been added is that the tool can also be used to generate daily data that are characteristic of current conditions, based on the WorldClim dataset, an interpolated surface of weather station data from around the world mostly covering the years 1960-1990.

As before, the tool can generate multiple realisations of years of daily data: rainfall, maximum and minimum temperatures and solar radiation. Generated data files, which can be downloaded, are fully compatible with the DSSAT (Decision Support System for Agrotechnology Transfer) crop modelling system. The tool can be accessed here.

MarkSim GCM was developed by Waen Associates with CCAFS support, in cooperation with CIAT, ILRI, IFPRI, Potsdam Institute for Climate Impact Research, HarvestChoice, and the University of Oxford.

 

Read also: Weather Generating Tool Helps Agronomists Assess Climate Risk (CCAFS Blog)

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Marksim

Submitted by Piara singh (not verified) on 17 October, 2011 - 05:42.
Marksim can not be used usefully for climate change inpact studies, because it does not simulate the baseline data for Indian sites correctly. The data generated does not match the observed mean montly values of weather elements for the same period nor does it matich the WorlClim database for India. First the calculations of baseline dat needs to be improved before it is modified with the future climate change scenarios.

Marksim

Submitted by Vanessa on 17 October, 2011 - 14:38.

Dear Dr Singh,

I‘ve just seen your comment on MarkSim on the CCAFS blog. We’d be very keen to hear which sites you have tested it for, and where you are finding problems, as we are in the process of developing a new version of the software.

If you could possibly tell us which version of the software you were using (was it the version 1 from the CD or the MarkSimGCM web-based version), and the coordinates of the sites where you found problems (or even better, if you could send us the generated data files themselves), that would be extremely useful.

Thanks and regards,

Philip Thornton

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