Difference between revisions of "GEOS-Chem v10-01"

Revision as of 20:51, 11 April 2014

Overview

History

The table below shows the previous, current, and successive versions of GEOS-Chem:

--Bob Y. 13:17, 16 January 2014 (EST)

What's new in this version

GEOS-Chem v10-01 will be released after a fixed interval of time (approxmiately 9 months after the release of the prior version, GEOS-Chem v9-02). The GEOS-Chem Steering Committee has prioritized the following updates and improvements for inclusion into GEOS-Chem v10-01. (This list is subject to change.) Updates that do not get included into GEOS-Chem v10-01 will be held over for the next version.

NOTE: v10-01a, v10-02b, etc. denote 1-month benchmark simulations, which are designed to evaluate GEOS-Chem's performance at intermediate stages of development.
Alternating stripes of color (white & cyan) in the table below group together features that were evaluated in the same 1-month benchmark.

--Melissa Sulprizio 11:18, 5 March 2014 (EST)

New data directories

The following new data directories have been added for GEOS-Chem v10-01. You will have to download the directories relevant to your simulation.

You can download these directories with anonymous FTP or the Wget utility. For instructions, please see Chapter 2.4, Downloading the GEOS-Chem shared data directories in the GEOS-Chem Online User's Guide.

GEOS_NATIVE/UCX_201403                    # Input files for the UCX mechanism

--Melissa Sulprizio 15:24, 24 February 2014 (EST)

Previous issues now resolved in GEOS-Chem v10-01

Now use correct value of molecular weight for the PROPNN tracer in input.geos

This update was tested in the 1-month benchmark simulation v10-01b and approved on 06 Mar 2014.

This unresolved issue from GEOS-Chem v9-02 has now been corrected.

--Bob Y. 15:45, 12 March 2014 (EDT)

Now use MAP_A2A to regrid 1x1 TOMS O3 to model resolution

This update was tested in the 1-month benchmark simulation v10-01b and approved on 06 Mar 2014.

For complete information about this issue, please see this post on our Photolysis mechanism wiki page.

--Bob Y. 15:47, 12 March 2014 (EDT)

Bug fix for determining when to use TOMS O3 columns

This update is being tested in the 1-month benchmark simulation v10-01c.

For complete information about this issue, please see this post on our Photolysis mechanism wiki page.

--Bob Y. 15:57, 12 March 2014 (EDT)

Speed up computations in the Olson land map module

This update is being tested in the 1-month benchmark simulation v10-01c.

Using the Tuning and Analysis Utilities (TAU) software, we have found and fixed a computational bottleneck in routine COMPUTE_OLSON_LANDMAP (in module file GeosCore/olson_landmap_mod.F90). For a full description of this issue, please see this post on our Olson land map wiki page.

--Bob Y. 10:49, 21 March 2014 (EDT)

Fixes for the stratospheric chemistry module

We have introduced the following fixes to the stratospheric chemistry module. Please see the following posts for more information:

1. Reduce memory footprint of the stratospheric chemistry module
2. Bug fix in routine GET_RATES_INTERP. affecting nested-grid simulations

--Bob Y. 15:33, 11 April 2014 (EDT)

Various updates for GEOS-Chem specialty simulations

We have added several updates (both structural updates and minor bug fixes) to the GEOS-Chem specialty simulations. Please view the following posts for more information:

NOTE: Initializing the various specialty simulations from routine GIGC_Init_Extra is necessaary for compatibility with our Grid-Independent GEOS-Chem (aka GIGC) development. We need to initialize all GEOS-Chem simulations at the start of the simulation, and not on the first chemistry or emissiosn timestep after the simulation has already started. This is a requirement of the Earth System Model Framework (ESMF) software upon which our GIGC code relies.

--Bob Y. 16:02, 11 April 2014 (EDT)

Outstanding issues not yet resolved in GEOS-Chem v10-01

TBD