[RegCNET] Error in vwnd.1989.18.nc in ERA40 dataset

[Kanhu Charan Pattnayak]

Dear Dr Bi and RegCNET users,

I have run RegCM3(March 2008 version) for 21yrs(i.e. 1980-2000) with
*ERA40*as the lateral boundary conditions.

The physics option we used for convective precipitation is *Grell
scheme(Fritsch & Chappell *closure assumption).

When I compared the rainfall with IMD 0.5x0.5 gridded rainfall over the land
point over India, except *1985 *all remaining year I got

excess rainfall. *1985 *got 14cm less than the IMD rainfall. I have tried so
many runs for that year. But all the time the rainfall was

same. So could you please check the dataset for that year and inform me
whether there is any mistake in the dataset or can you

please suggest me what may be reason behind this.

Thanks and regards


 Tue, Jan 19, 2010 at 4:02 PM, Kanhu Charan Pattnayak <kcpattnayak at gmail.com
> wrote:

> Dear Dr. Bi
> Thank you very much for the immediate action.
> If I am getting some more errors then I ll inform you.
> Thanks and regards.
>
> On Tue, Jan 19, 2010 at 3:21 PM, bixq <bixq at ictp.it> wrote:
>
>>
>> Dear Kanhu:
>>
>> Thank you very much for your finding the error !
>>
>> The file is wrong, I have just redownloaded the file vwnd.1989.18.nc
>> from ECMWF webpage and update the data in our ftp server.
>>
>> Several years ago, Mr. Zhang Lei, Mr. Guo Weidong and I work on
>> downloading the whole ERA40 files, you know, each file need to be
>> renamed (like, mv output.nc vwnd.1989.18.nc), probably one of us
>> made a mistake. This error is also possible due to the previous
>> ECMWF's code to netcdf data.
>>
>> When I download the file vwnd.1989.18.nc data, the date range is
>> from 1989:1:1:18 to 1989:12:31:18 (not the previous 1989:1:1:0 to
>> 1989:12:31:0).
>>
>> Anyway, I feel sorry for any inconvience caused by this error. And
>> if possible, could you please also help me check the other files.
>> I am also doing the check right now.
>>
>> Thank you again for your help !
>> Xunqiang Bi
>>
>>
>> On Tue, 19 Jan 2010, Kanhu Charan Pattnayak wrote:
>>
>>  Dear Dr. Bi and Regcnet users
>>>
>>> There is an error in vwnd.1989.18.nc in ERA40 data-set.
>>> While opening the data file it is showing that the time is
>>> 1990:1:1:0 whereas the time should be 1989:1:1:0
>>> The error message is shown below
>>>
>>> ga-> sdfopen vwnd.1989.18.nc
>>> Scanning self-describing file:  vwnd.1989.18.nc
>>> SDF file vwnd.1989.18.nc is open as file 1
>>> LON set to 0 360
>>> LAT set to -90 90
>>> LEV set to 1 1
>>> Time values set: 1990:1:1:0 1990:1:1:0
>>>
>>> ga-> set t 1 365
>>> Time values set: 1990:1:1:0 1990:12:31:0
>>>
>>> So please suggest me for VWND.1989.18 data which file I should use.
>>> Thanks in advance.
>>>
>>>
>>> --
>>> Kanhu Charan Pattnayak (Research Scholar)
>>> Room No.311, Block - VI
>>> Centre for Atmospheric Sciences
>>> IIT Delhi, Hauz Khas
>>> New Delhi - 110 016
>>> India
>>>
>>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>  Dr. Xunqiang Bi         email:bixq at ictp.it <email%3Abixq at ictp.it>
>>  Earth System Physics Group
>>  The Abdus Salam ICTP
>>  Strada Costiera, 11
>>  P.O. BOX 586, 34100 Trieste, ITALY
>>  Tel: +39-040-2240302  Fax: +39-040-2240449
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>
>
>
> --
> Kanhu Charan Pattnayak (Research Scholar)
> Room No.311, Block - VI
> Centre for Atmospheric Sciences
> IIT Delhi, Hauz Khas
> New Delhi - 110 016
> India
>



-- 
Kanhu Charan Pattnayak (Research Scholar)
Room No.311, Block - VI
Centre for Atmospheric Sciences
IIT Delhi, Hauz Khas
New Delhi - 110 016
India
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