Difference between revisions of "GEOS-Chem Newsletter July 2009"

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(New page: Dear GEOS-Chem Users, Here is the July 2009 GEOS-Chem Newsletter. Please take a moment to read it, as it contains the latest news about the GEOS-5 met field reprocessing. Thank you for ...)
 
(GEOS-Chem Working Groups)
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=== GEOS-Chem Working Groups ===
 
=== GEOS-Chem Working Groups ===
  
We ask that each GEOS-Chem user join the [http://www.as.harvard.edu/ctm/geos/geos_working_groups.html Working Group] that is most relevant to his/her area of research.  For more information about a particular working group, please contact the appropriate Working Group Chairperson(s).
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We ask that each GEOS-Chem user join the [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Group] that is most relevant to his/her area of research.  For more information about a particular working group, please contact the appropriate Working Group Chairperson(s).
  
 
The Working Group Wiki pages are constantly being updated!  Please be sure to check them often for the latest news.
 
The Working Group Wiki pages are constantly being updated!  Please be sure to check them often for the latest news.

Revision as of 17:01, 13 July 2009

Dear GEOS-Chem Users,

Here is the July 2009 GEOS-Chem Newsletter. Please take a moment to read it, as it contains the latest news about the GEOS-5 met field reprocessing.

Thank you for your continued support of GEOS-Chem!

Bob Yantosca, Philippe Le Sager, and Claire Carouge
geos-chem-support@as.harvard.edu

Web site update

Please note that the Harvard Atmospheric Chemistry Modeling Group, GEOS-Chem, and GAMAP web pages have now moved to their new URL's (see below). Please update your browser web bookmarks accordingly.

Site Old URL New URL
Main site http://www.as.harvard.edu/ctm/ http://acmg.seas.harvard.edu/
GEOS-Chem site http://www.as.harvard.edu/ctm/geos/ http://acmg.seas.harvard.edu/geos/
GAMAP site http://www.as.harvard.edu/ctm/gamap http://acmg.seas.harvard.edu/gamap/

Also, web links from the GEOS-Chem wiki pages have been updated to use the new URL's. However, if you should still find any broken links, please let the GEOS-Chem support team know and we will correct them.

GEOS-Chem Update

GEOS-Chem Steering Committee

Latest GEOS-Chem Steering Committee news:

GEOS-Chem Working Groups

We ask that each GEOS-Chem user join the Working Group that is most relevant to his/her area of research. For more information about a particular working group, please contact the appropriate Working Group Chairperson(s).

The Working Group Wiki pages are constantly being updated! Please be sure to check them often for the latest news.

GFED2 monthly data for 2008

As of July 2009, the GFED2 monthly data is now available for years 1997-2008. The new 2008 data is available in bpch format at:

ftp ftp.as.harvard.edu
cd pub/geos-chem/data/GEOS_1x1/GFED2_200601/2008

You will need to make a small modification in routine GFED2_COMPUTE_BIOMASS (in gfed2_biomass_mod.f) in order to update the maximum available year of data. Look for the lines:

     ! Availability of MONTHLY data
     !-------------------------------
     ELSE IF ( LGFED2BB ) THEN
        
        CALL GFED2_AVAILABLE( YYYY, 1997, 2007 )

and change the 2007 to 2008:

     ! Availability of MONTHLY data
     !-------------------------------
     ELSE IF ( LGFED2BB ) THEN
        
        !-----------------------------------------------------------
        ! Prior to 7/8/09:
        ! GFED2 2008 monthly data is now available (bmy, 7/8/09)
        !CALL GFED2_AVAILABLE( YYYY, 1997, 2007 )
        !-----------------------------------------------------------
        CALL GFED2_AVAILABLE( YYYY, 1997, 2008 )

You may also download the updated version of gfed2_biomass_mod.f from:

ftp ftp.as.harvard.edu
cd pub/geos-chem/patches/v8-02-02
get gfed2_biomass_mod.f

This fix will be standardized in GEOS-Chem v8-02-03.

NOAA sea-surface temperature for 2005-2008

Lyatt Jaegle has processed the NOAA sea-surface-temperature files for the years 2005-2008. These will be available from our FTP site:

ftp ftp.as.harvard.edu
cd pub/geos-chem/data/GEOS_1x1/SST_200508
get README
get SST.geos.1x1.2005
get SST.geos.1x1.2006
get SST.geos.1x1.2007
get SST.geos.1x1.2008

after Tuesday (July 14th) morning's reboot.

You will also need to update the line of code in routine READ_SST (in sulfate_mod.f) from:

     IF ( THISYEAR >= 1985 .and. THISYEAR <= 2004 ) THEN 

to:

     IF ( THISYEAR >= 1985 .and. THISYEAR <= 2008 ) THEN 

Or, if you wish, you may download the updated version of sulfate_mod.f from

ftp ftp.as.harvard.edu
cd pub/geos-chem/patches/v8-01-02
get sulfate_mod.f

This fix will be standardized in GEOS-Chem v8-02-03.

GEOS-Chem v8-02-03

The next release of GEOS-Chem will be GEOS-Chem v8-02-03. This version will contain everything in GEOS-Chem v8-02-02, plus:

  • Kpp chemical solver package (Adrian Sandu group @ Virginia Tech group)
  • ICOADS ship emissions (Chulkyu Lee)
  • Use of GEOS-5 ozone columns (C. Carouge, still in validation)
  • Removal of support for obsolete SGI and COMPAQ compilers

This version is currently in beta-testing. Stay tuned for more information!

GEOS-5 met field reprocessing

Status

As of July 2009, the complete GEOS-5 archive from 2004-2008 has now been reprocessed in order to correct the optical depth problem reported several months ago.

You may download the data from:

 Nested China
 ftp ftp.as.harvard.edu
 cd pub/geos-chem/data/GEOS_0.5x0.666_CH.d/GEOS_5/YYYY/MM/

 2 x 2.5 Global
 ftp ftp.as.harvard.edu
 cd pub/geos-chem/data/GEOS_2x2.5.d/GEOS_5/YYYY/MM/

 4 x 5 Global
 ftp ftp.as.harvard.edu
 cd pub/geos-chem/data/GEOS_4x5.d/GEOS_5/YYYY/MM/

where YYYY/MM/ are the year and month of data that you wish to download.

As of July 13, 2009, GEOS-5 data is available from 2003/12 thru 2009/05. We should get caught-up to real-time later this week.

Updated OTD/LIS redistribution factors for lightning

Lee Murray has regenerated the OTD/LIS local redistribution factors for use with the new reprocessed GEOS-5 met data fields. The scale factors were based on GEOS-5 met data from Dec 2003 through Feb 2009.

You may obtain the new OTD/LIS scale factors from:

ftp ftp.as.harvard.edu
cd pub/geos-chem/data/GEOS_4x5/lightning_NOx_200907
mget *
cd pub/geos-chem/data/GEOS_2x2.5/lightning_NOx_200907
mget *
cd pub/geos-chem/data/GEOS_0.5x0.666_CH/lightning_NOx_200907
mget *

The OTD/LIS files are named with the following convention:

OTD-LIS-Local-Redist.CTH.v4.geos4.*
OTD-LIS-Local-Redist.CTH.v4.geos5.*

Note that the version of the data has been updated from v3 to v4, in order to distinguish them from the files in the previous directory lightning_NOx_200709/.

NOTE: The GEOS-4 files in lightning_NOx_200907/ identical to those in lightning_NOx_200709/. For consistency and simplicity of coding, they have been renamed from v3 to v4.

You will also need to get an updated version of source code file lightning_nox_mod.f, which has been modified to read in these new OTD/LIS local factors. You may obtain this from:

ftp ftp.as.harvard.edu
cd /lustre/pub/ftp/pub/geos-chem/patches/v8-02-02

NOTE: You must also compile GEOS-Chem with the

#define IN_CLOUD_OD 'IN_CLOUD_OD'

switch activated in the define.h header file. However, at a later time the IN_CLOUD_OD switch will be removed from the code. We will keep it for now in case some GEOS-Chem users may not have all of the GEOS-5 met data downloaded onto their systems.

ESMF and Column Code Update

We have created a new GEOS-Chem column code wiki page. Please check back here for the latest developments!

--Bob Y. 13:01, 13 July 2009 (EDT)