[R-sig-Geo] Spatial Downscaling in R

[karsten]

Hi Milu,

if you meant you are lacking raster data sources for temperatures or
rainfall here are some I used extensively for agricultural research projects
in Africa

Rainfall (37 years of global modelled data): CHIRPS at about 5km resolution
http://chg.geog.ucsb.edu/data/index.html
ftp://ftp.chg.ucsb.edu/pub/org/chg/products/CHIRPS-2.0/

Temperature (not Global but has Africa e.g.) from FEWS
https://earlywarning.usgs.gov/fews -> data download (data since 2002
and more 

also look at http://www.ccafs-climate.org/
and http://www.ccafs-climate.org/data_spatial_downscaling/ 

Cheers
Karsten


-----Original Message-----
From: R-sig-Geo [mailto:r-sig-geo-bounces at r-project.org] On Behalf Of Miluji
Sb
Sent: Donnerstag, 15. März 2018 12:55
To: Bede-Fazekas Ákos; tom.hengl at gmail.com
Cc: R-sig-geo mailing list
Subject: Re: [R-sig-Geo] Spatial Downscaling in R

 Thank you for your replies. I will try with the packages you mentioned -
they look very useful, I guess my issue is that all I have a vector of
global mean. Thanks again!

Sincerely,

Milu


On Thu, Mar 15, 2018 at 9:34 AM, Bede-Fazekas Ákos <bfalevlist at gmail.com>
wrote:

> Dear Milu,
>
> You can use any spatial interpolation method as statistical 
> downscaling approach. See package gstat for IDW (inverse distance 
> weighted) and several types of kriging. In case of temperature, you 
> might use elevation data from a DEM or radiation data as auxiliary 
> variables in those interpolation methods (e.g. regression kriging) that
can handle auxiliary data.
>
> HTH,
> Ákos Bede-Fazekas
> Hungarian Academy of Sciences
>
>
>
> 2018.03.14. 22:15 keltezéssel, Miluji Sb írta:
>
>> Thanks again! Looking into this right now.
>>
>> Sincerely,
>>
>> Milu
>>
>> On Wed, Mar 14, 2018 at 9:54 PM, Michael Sumner <mdsumner at gmail.com>
>> wrote:
>>
>> Try ClimDown package, otherwise more generally raster function
>>> disaggregate.
>>>
>>> Cheers
>>>
>>> On Thu, 15 Mar 2018, 06:53 Miluji Sb, <milujisb at gmail.com> wrote:
>>>
>>> Dear all,
>>>>
>>>> Please forgive my inexperience with spatial downscaling. I am 
>>>> interested in spatial downscaling of global temperature to grid 
>>>> cell. Is there a package in R that can perform this function?
>>>>
>>>> Any help/guidance will be highly appreciated.
>>>>
>>>> Sincerely,
>>>>
>>>> Milu
>>>>
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