Opened 11 years ago

Closed 9 years ago

#401 closed task (fixed)

Generating a time varying vegetation cover ancillary

Reported by: aschurer Owned by: grenville
Component: UM Model Keywords:
Cc: Platform:
UM Version: 4.5


I am trying to generate a ancillary for time dependent vegetation cover.

The dataset I intend to use is different from the standard, Wilson Henderson-Sellers data set and ideally I want more vegetation types than just the usual primary and secondary vegetation types in each grid square.

Is there any existing tools which could help achieve this or am I going to have to make modifications to the central ancillaries program (CAP)? If this is the case where can I get a copy of the CAP source code?


Change History (4)

comment:1 Changed 11 years ago by grenville

  • Owner changed from um_support to grenville
  • Status changed from new to accepted


It's clear that the CAP can not currently produce what you require, however, what is less clear is how to proceed; the CAP has not been written for general use, so adding extra vegetation types could be a considerable undertaking; porting the code to work on your local machine could also take some doing; but perhaps most significantly, we are not able to provide any source data. The CAP's role is primarily in regridding data rather than directly creating it.


comment:2 Changed 11 years ago by aschurer

Hi Grenville. Thanks for your reply.

To clarify the situation, I already have a vegetation cover dataset (Pongratz et al 2008) and would like to generate an ancillary file for this. I have read the UM documentation paper no. 70 (specification of ancillary fields), which I believe is describing what the CAP is doing, and it would seem that it would be possible, with a small alteration to the CAP, for me to modify it to accept the new dataset, that I want in place of the usual WHS dataset. Do you think this would be possible? What is the source data which you are unable to supply.

To conclude I would very be grateful if you could provide me with the source code so I can get a better idea what it is doing, or any other documentation which you think could be relevant.


comment:3 Changed 11 years ago by grenville


I am collecting the code and scripts ready for sending to you. Please bear in mind your responsibilities under the Met Office licence agreement especially given that the code was never intended for general release.


comment:4 Changed 9 years ago by ros

  • Resolution set to fixed
  • Status changed from accepted to closed
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