[RegCNET] Error in wind field preprocessed by ICBC, when NORMER is used

[Sridhara Nayak]

Dear Felipe
Thank you very much for noticing the same problem we have faced. We
(Sridhara Nayak and Suman Maity) have also checked with different
projection and found the problem is because of the projection. Well, our
wind field is now very similar with the source data after using LAMCON
(Lambert Conformal) projection.  Did you have checked the temperature data
with pressure level in between 700 and 1000? We have still noticed the
temperature data with LAMCON projection represents very different values at
high altitudes (above 4500meter).

Thank You
Sridhara Nayak



On Thu, Jun 28, 2012 at 8:03 AM, Felipe Roque <felipenrs at gmail.com> wrote:

> Dear friends,
>
> I'm from Brazil and I'm using RegCM model for my doctoral thesis. I use
> version 4.1 and noticed that the wind data preprocessed by ICBC are
> somewhat different when using NORMER (Normal Mercator) projection. When I
> use ROTMER (Rotated Mercator) projection to generate the initial and
> boundary conditions, wind fields generated by ICBC and the source data are
> very similar. Other variables generated by ICBC do not differ from source
> data. I tested this in versions 4.1.1 and 4.2 and the error persists in
> relation to the wind field.
>
> Recently, Suman Maity from India reported a similar problem, though he had
> not related to different map projections.
>
> Someone confirm if this bug is really happening? If so, there is
> correction?
>
> If someone wants, I can attach the pictures in the email.
>
> Thank you,
> Felipe.
>
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-- 
Sridhara Nayak, PhD Student;
Centre for Oceans, Rivers, Atmosphere and Land Sciences;
Indian Institute of Technology Kharagpur; Kharagpur; West Bengal; India.
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