Talk:Ambient air temperature in Europe

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Obtaining temperature data

13.7.2010 Jouni wrote:

Dear Sandra,

I did based on your instructions. All went fine until I realised that the CDI for converting the binary files into ASCII requires a UNIX system. I don't have UNIX, only Windows. Could you please transform the temperature data into ASCII text or CSV files? I don't know how precise the time resolution is, but I suppose what we need is the minimum and maximum temperatures for each day.

Sincerely,

Jouni

On 10.6.2010 17:58, Sandra Torras Ortiz wrote:

Dear Jouni


Alex asked me to provide you with information related to the REMO model (Regional Climate Model). Sorry for the delay and although the topic is quite extensive, I’ll try to briefly describe the current situation regarding data availability and their use in the MCS..


The model was developed at the Max- Plank-Institute for Meteorology in Hamburg, Germany (MPIMET). You can find basic information about the model, applications and references at the model’s website:

http://www.mpimet.mpg.de/en/wissenschaft/atmosphaere-im-erdsystem/arbeitsgruppen/regionale-klimamodellierung/the-remo-model.html


MPIMET will provide meteorological fields for the years 2020, 2030 and 2050 to be used by the different dispersion modelling teams. Until now, we only have data for the year 2005, which were used in a simulation with the model Polyphemus (CEREA, France) for comparison purposes against other simulation using ECMWF meteorological data. The comparison gave insight into how well the model


As for the parameter “Dew point temperature at 2m”, given that this parameter was not included in the 2005 data delivered by MPIMET, it was necessary to find out, first, if the model REMO also provides this parameter and, secondly, if this parameter can also be available for our project purposes. I’m happy to report that today I received an affirmative response to both questions and I also got the temperature data for the year 2005.


The data is binary coded using the IEG BIGENDIAN format, which can be converted to ASCII or netCdf using the so-called Climate Data Operators (CDO) freely available at https://code.zmaw.de/projects/cdo/. Furthermore, the grid is defined as follows:


gridtype = lonlat

gridsize = 13189

xname = rlon

xlongname = longitude in rotated pole grid

xunits = degrees

yname = rlat

ylongname = latitude in rotated pole grid

yunits = degrees

xsize = 109

ysize = 121

xnpole = -162

ynpole = 39.25

xfirst = -26.89

xinc = 0.44

yfirst = -26.29

yinc = 0.44


If you are interested in looking at the actual data, I can send you the files for 2005 (one for each month, around 40Mb size each) with hourly values using our ftp server.


I hope I gave you a clearer picture of the REMO data and please let me know if you have any questions.


Regards


Sandra