GEOS-Chem Classic 13.4.0
Release date: 02 May 2022
Updates that will affect full-chemistry benchmark simulations
- Migrate sulfate chemistry into KPP
- Convert the HOCl & HOBr reactions with dissolved SO2 to use gas phase SO2
- Turn off sea salt debromination by default
- Fix bug in Henry law CALC_HEFF routine in hetchem computations
- Bug fix: Remove double-counting of HCl uptake on acidic sea salt
- Update surface resistance for ozone deposition to ice/snow
- Update to HEMCO version 3.4.0
- AEIC 2019 aircraft emissions inventory
- Use degassing-only volcano emissions in GEOS-Chem benchmark simulations
- Fix end year for CEDS_NO_SHIP and MULTISEAICE entries in HEMCO_Config.rc
- Fix parallelization errors in GEOS-Chem Classic and add updates for better numerical stability
- Use updated definition of PM2.5; Add PM10 diagnostic
Updates that will NOT affect full-chemistry benchmark simulations
- Updated Hg chemistry in KPP
- NOTE: Still undergoing validation, a fix may be issued in a patch version (e.g. 13.4.1)
- Bug fix: Use REAL*8 precision in for CH3O2 + OH reaction definition in fullchem.eqn
- Updated Global Inventory of Methane Emissions from Oil/Gas/Coal (GFEI v2)
- Anthropogenic Methane Emission Inventory for Canada
- Use EDGARv6 global anthro emissions for CH4 simulation
- Updated Rn-222 emissions for TransportTracers simulations
- Retire HEMCO extension for CH4 wetland emissions
- Updates to enable automated run directory creation
- Bug fix: Allow GEOS-Chem Classic History to archive irregular intervals (e.g. a month and a day)
- Updates for running GEOS-Chem within GEOS
- Add CH4 pseudo flux diagnostic
- Add capability to write GEOS-Chem Classic timers to JSON file
- Update tagged Ox simulation to use archived prod/loss rates from GEOS-Chem and retire Linoz
- Apply bug fix for dust aciduptake simulation
Updates that will only affect GCHP
- Add capability to use mass fluxes in advection
- Switch advection to use total pressure (rather than dry)
- Add option for driving GCHP with native GEOS meteorological files
- Add diagnostic for vertical air movement (vertical mass flux)
- Define a GCHP "Default" diagnostic collection that will archive a small number of commonly-requested diagnostic fields
- Add capability to read native meteorological data files
- Fix communicators leak Weiyuan Jiang (GSFC)
- Fix unintuitive error handling when untemplated file is missing
- Fix incorrect output file timestamp with 24-hour duration and 1-hour frequency
- Fix units in FV3 mass flux variable that impacted vertical mass flux diagnostic
- Move call to setup_wetscav to prevent zero C_H2O used in wet scavening in first timestep
- This removes differences in wet scavenging when breaking up run
For more information, please see:
- Getting Started with GEOS-Chem
- NOTE: We are in the process of moving the GEOS-Chem Classic manual to https://geos-chem.readthedocs.io
- GCHP manual at ReadTheDocs
- HEMCO manual at ReadTheDocs
- GEOS-Chem 13.4.0 page on the GEOS-Chem wiki