[RegCNET] how to calculate relative humidity
Yubin Li
liyubin at nuist.edu.cn
Wed Mar 5 09:52:26 CET 2014
Hi Kishore,
>From the output you can have temperature (T, degree), pressure(P, hPa) and
specific humidity(Q, kg/kg), the relative humidity (RH) can be calculated
by:
pvapor_saturated = 6.11*10^(7.5*T/(237.3+T))
rh = Q * P / (0.622+0.378*Q) / pvapor_saturated *100
Regards,
Yubin
-----Original Message-----
From: regcnet-bounces at lists.ictp.it [mailto:regcnet-bounces at lists.ictp.it]
On Behalf Of regcnet-request at lists.ictp.it
Sent: Wednesday, March 05, 2014 4:31 PM
To: regcnet at lists.ictp.it
Subject: RegCNET Digest, Vol 433, Issue 2
Contents:
1. how to calculate relative humidity .. (Kishore Ragi)
2. error with-clm for 20km resolution (chao.tang)
3. Regional climate modeling workshop - Deadline 15 March
(Raymond Arritt)
----------------------------------------------------------------------
From: Kishore Ragi <kishoreragi at gmail.com>
Subject: [RegCNET] how to calculate relative humidity ..
Dear RegCM users,
Could anybody please tell me how to calculate relative humidity from the
RegCM-4.2 output?
Thank you
Regards,
Kishore
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From: "chao.tang" <chao.tang at univ-reunion.fr>
Subject: [RegCNET] error with-clm for 20km resolution
Dear all,
I was trying to run RegCM-4.3.5.6 with-CLM for resolution of 20km.
Pre-Processing succeed. While I got this error when I start the model.
$: mpirun -np 12 regcmMPI_clm $namelist > runlog.$namelist 2>&1
????????????????????????????????????????
...
Attempting to read surface boundary data .....
(GETFIL): attempting to find local file t20km_RCMlanwat.nc
(GETFIL): using ./input/t20km_RCMlanwat.nc
(GETFIL): attempting to find local file t20km_RCMsoitex.10level.nc
(GETFIL): using ./input/t20km_RCMsoitex.10level.nc
(GETFIL): attempting to find local file t20km_RCMglacier.nc
(GETFIL): using ./input/t20km_RCMglacier.nc
(GETFIL): attempting to find local file t20km_RCMurban.nc
(GETFIL): using ./input/t20km_RCMurban.nc
(GETFIL): attempting to find local file t20km_RCMpft.nc
(GETFIL): using ./input/t20km_RCMpft.nc
surfrd error: WTXY > 1 occurs at nl= 20627
ENDRUN: called without a message string application called
MPI_Abort(MPI_COMM_WORLD, 1) - process 8forrtl: error (76): Abort trap
signal
Image PC Routine Line Source
libc.so.6 0000003458830265 Unknown Unknown Unknown
libc.so.6 0000003458831D10 Unknown Unknown Unknown
libmpidev.so 00002ADB38EFE1EF Unknown Unknown Unknown
libmpi.so 00002ADB37935E47 Unknown Unknown Unknown
libmpi.so 00002ADB3793935D Unknown Unknown Unknown
regcmMPI_clm 000000000084A149 Unknown Unknown Unknown
regcmMPI_clm 000000000093E51D Unknown Unknown Unknown
regcmMPI_clm 0000000000949079 Unknown Unknown Unknown
regcmMPI_clm 0000000000911276 Unknown Unknown Unknown
regcmMPI_clm 00000000008E025A Unknown Unknown Unknown
regcmMPI_clm 000000000083EAEF Unknown Unknown Unknown
regcmMPI_clm 0000000000578DD3 Unknown Unknown Unknown
regcmMPI_clm 00000000006677E7 Unknown Unknown Unknown
regcmMPI_clm 0000000000667AE5 Unknown Unknown Unknown
regcmMPI_clm 000000000040C01C Unknown Unknown Unknown
libc.so.6 000000345881D994 Unknown Unknown Unknown
regcmMPI_clm 000000000040BF29 Unknown Unknown Unknown
rank 8 in job 1 titan21_36041 caused collective abort of all ranks
exit status of rank 8: killed by signal 9
????????????????????????????????????????
My domain size is 100 degree in longitude, 40 degree in latitude.
And, below is part of my namelist file,
????????????????????????????????????????
&dimparam
iy = 252, ! for 50km iy=96; for 20km iy=252
jx = 576, ! for 50km ix=224; for 20km ix=576
kz = 18,
nsg = 1,
/
&geoparam
iproj = 'NORMER',
ds = 20.0,
ptop = 5.0,
clat = -20.00,
clon = 50.00,
plat = -21.00,
plon = 55.00,
truelatl = 30.0,
truelath = 60.0,
i_band = 0,
/
?
&timeparam
dtrad = 30.,
dtabem = 18.,
dtsrf = 600.,
dt = 50.,
/
?
????????????????????????????????????????
The model runs successfully and reaches the end if I set iy = 96, jx = 224
(for 50km)
leaving other parameters ( ds, dt, ... ) unchanged.
Could you please give me some advise ? thanks.
Best regards,
Chao TANG
----------------------------------------------------------------------------
---------------------
Laboratoire d'Energ?tique, d'Electronique et Proc?d?s
Unit? de Recherche EA 4079
Universit? de La R?union, LE2P
15 avenue Ren? Cassin CS 92003
97744 ST DENIS CEDEX 9
Mobile: 0693 91 57 38
Courriel: chao.tang at univ-reunion.fr
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------------------------------
From: Raymond Arritt <rwarritt at gmail.com>
Subject: [RegCNET] Regional climate modeling workshop - Deadline 15
March
Dear colleagues,
This is a reminder (or if you are not yet aware, a first notice) that
the abstract submission deadline for the 3rd International Lund
Regional-Scale Climate Modelling Workshop is approaching. The deadline
is 15 March 2014. The workshop will be held 16-19 June 2014 in Lund,
Sweden.
Details on abstract submission are available at the workshop web site,
which is at http://www.baltex-research.eu/RCM2014/
The overall goals of the workshop are to survey progress in regional
climate modelling since the previous workshop in 2009, to discuss
unresolved issues and challenges, and to provide input for new
developments in the field. Main workshop topics are Regional Climate
and Earth System Models; Very-high-resolution RCMs; Challenges for RCM
Evaluation and Application; and RCM Ensembles.
For further details please see the Second Announcement of the workshop,
available at
http://www.baltic-earth.eu/RCM2014/Material/Lund_2Announcement_2.pdf
Regards,
Ray Arritt
On behalf of the scientific committee.
With apologies for cross-postings
------------------------------
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