Dear Dr. Abdalla,
My advice, and taking into account waht I suppose Dr Sommer is thinking
about, is to separate the data for each crop in different
maps/layers/GIS-tables, specially if in each grid cell you've got more than
one crop at the same time, which is more probably the case, so you can
conduct different experiments, at least one for each cultivar.
However, if you are assuming only one cultivar (for example, the main one)
for each grid cell, I suppose you can do all in one run. I have never test
it, but I think it is possible.
Sorry I was busy yesterday, I'm still working on the documentation I
promised to you.
Best Regards,
Roger R. Rivero
----- Original Message -----
From: "Mohamed Abdalla" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, September 05, 2007 6:34 AM
Subject: Re: 10 x 10 grids
> Dear all,
> In more details:
> We are simulating the effect of climate change on a number of crops in
> Ireland
> (Winter wheat, spring barley, silage maize, potato, oil seed rape and
> grass).
> We are using a climate data which was downscaled from the Hadley Centre
> global
> climate model and give climate details for each 10X10km grid in Ireland.
> the
> simulation will be for each crop throughout the country. The question was
> whether it is possible to put all the data in one run and how or to run
> the
> model for each grid seperately. Hopefully this will give you a clear idea
> about
> what I am doing. Thanks
> Mohamed
>
>
>
>
>
>
>
>
> Quoting "Sommer, Rolf (ICARDA)" <[log in to unmask]>:
>
>> Dear Dr. Abdalla,
>>
>> by now you already got a number of useful replies to your question, and
>> there
>> is not much that I could add.
>>
>> I got a bit curious reading your short project description in combination
>> with your rather novice-question about DSSAT.
>> Could you give me and the other DSSAT users some more clues about what
>> you in
>> detail are doing?
>> 100 km2 cells, that's not actually small. Do you assume a single crop for
>> each of these cells?
>> What types of crops do you simulate?
>> Do you assume that crop varieties will be fixed? (There could be some
>> adaptation to climate change by changing varieties.)
>> I assume that you have gathered sufficient details on crop physiology to
>> describe crop response to rising CO2 and temperatures (day&night), maybe
>> prolonged growing season, and water stress in some extremely dry years
>> (to
>> mention a few effects of climate change)!
>> Could you share some of your experiences here?
>>
>> Best regards,
>> Rolf Sommer
>>
>> ==============================================
>> Dr. Rolf Sommer
>> International Center for Agricultural Research
>> in the Dry Areas (ICARDA)
>> P.O. Box 5466, Aleppo, Syria
>> Tel 00963 21 2213433
>> and
>> ZEF, Center for Development Research
>> Department of Ecology and Resource Management
>> University of Bonn
>> Walter-Flex-Str. 3
>> 53113 Bonn Germany
>> Help save paper - do you really need to print this email?
>> ==============================================
>>
>>
>>
>> > -----Original Message-----
>> > From: DSSAT - Crop Models and Applications
>> > [mailto:[log in to unmask]] On Behalf Of Mohamed Abdalla
>> > Sent: Tuesday, September 04, 2007 19:01
>> > To: [log in to unmask]
>> > Subject: 10 x 10 grids
>> >
>> > Dear all,
>> > We are trying to simulate the effect of climate change on crop yield in
>> > Ireland
>> > using DSSAT. We have data for each 10 x 10 km grid of ireland. Do we
>> > have to
>> > run the model for each grid seperately or is it possibile to run it for
>> > all
>> > grids together??.If any one can provide us with this information will
>> > be
>> > valuable for us at this stage. thanks
>> > Regards
>> > Mohamed
>> >
>> > --
>> > Dr. Mohamed Abdalla
>> > Ecophsiology and Climate Change Research Group
>> > School of Natural Sciences
>> > Trinity College Dublin
>> > Dublin 2
>> > Ireland
>> > Tel: + 353(0)18963740, Mobile: + 353 (0)85 149 6206
>>
>>
>
>
> --
> Dr. Mohamed Abdalla
> Ecophsiology and Climate Change Research Group
> School of Natural Sciences
> Trinity College Dublin
> Dublin 2
> Ireland
> Tel: + 353(0)18963740, Mobile: + 353 (0)85 149 6206
>
>
>
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