Climate Data Import Tool

Moderator: mmckerrow

Climate Data Import Tool

Postby mmckerrow » Mon Sep 12, 2016 1:18 pm

https://wiki.ewater.org.au/display/SD41/Climate+data+import+tool

The Climate Data Import Tool provides a mechanism for rapidly and easily importing gridded daily rainfall or potential evapotranspiration (PET) data. It is particularly suitable for large catchments (eg. 50,000 km2 to 500,000 km2). Refer to General requirements for data and Climate data formats - ASCII grids for more information on the data that can be used for this tool.

View the Climate Data Import Tool Webcast (16mins): https://attendee.gotowebinar.com/recording/6656271148487270148

Webcast Q&A:

Is data reported at the end of the time step?
Yes, the Rainfall data from Bureau of Meteorology is a 24 hr total for the preceding day.

Most models and sources uses -99.999 to fill missed data, is it possible to change this number with same results?
Yes, the Nodata option in the Ascii header specifies the number which is being used as Nodata.

Is there any catchment size limit in Source?
No, catchments can be very large or very small, although it’s good to remember that having more small catchments will increase run time.

What is the difference between BOM grid data and SILO data?
http://www.longpaddock.qld.gov.au/silo/ describes the relationship between SILO data and the BoM data.

If I had a Rainfall Runoff model that required another gridded climate variable, such as temperature for a snow melt model, can I import this via the tool as well? I.e. as a plugin with a 3rd input as temperature.
Yes, assuming the plugin has been written to add this option to the Climate Data Import Tool.

We've previously had an issue with small sub catchments (less than 10 ha) not importing rainfall correctly. Has this been fixed? Is it just a matter of increasing the default number (from 100) in the subsampling box in the tool now?
We’re still investigating the issue with very small catchments. Currently the best is to write a script which will resample all the climate grids to a smaller cell size, before importing them into Source.

Can we use in ungated basins in Vietnam?
Yes.

Is there documentation to access TRMM data with this tool?
https://pmm.nasa.gov/index.php?q=TRMM
The initial TRMM satellite was turned off in 2015. Building on TRMM, a satellite for another NASA precipitation measuring mission — GPM (Global Precipitation Measurement) — was launched in 2014. http://www.nasa.gov/mission_pages/GPM/o ... index.html

Do you have training programmes for the Rainfall Runoff Library (RRL) in the eWater Toolkit?
No.

Do you suggest Source over RRL?
The suitability of a particular product depends on the required application. Source includes all the models which are in the RRL, and has added functionality.

More information about gridded climate data sets:
• CSFR, http://globalweather.tamu.edu/
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Meryl McKerrow
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meryl.mckerrow@ewater.org.au
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