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Feature UpdateComponentRelevant modelContibutor(s)Notes
New dust schemeland and atmosphere: interactive emissionsCESM/CAM-Chem, WACCM and MUSICADanny LeungAn updated interactive dust scheme to emit dust into the atmosphere. Will be default in CESM3. (CAM Issue #651)
MAM5 aerosolsaerosol mechanismCESM/CAM-Chem, WACCM and MUSICASimone Tilmes, Louisa Emmons, Francis Vitt, Mike MillsMAM5 (MAM4 + 1 mode for stratospheric sulfate) for all CESM configuration (CAM Issue #663, #664)
MEGAN-CLM5land and atmosphere: interactive emissionsCESM/CAM-Chem, WACCM and MUSICA

Alex Guenther (UCI)

Implement updated interactive biogenic emissions with Model of Emissions of Gases and Aerosols from Nature (MEGAN) (CTSM Issue #1323)

Already an update related to drought.

CLM development is slightly different from offline MEGAN3.

HEMCO integrationemissionsCESM/CAM-Chem, WACCM and MUSICAHaipeng Lin (Harvard, NCAR/CGD)Online reading and re-gridding of emissions. Includes diurnal cycle options. (CAM Issue #560). Regrids to an intermediate grid. Needs testing with MPAS.

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Feature Update

Component

Relevant model

Notes
Saving 2m (height) ozonediagnosticCESM/CAM-Chem, WACCM and MUSICASome land component output is necessary for interpolating the surface layer to 2m. 
Saving MDA8 ozonediagnosticCESM/CAM-Chem, WACCM and MUSICAImportant for comparing with air quality attainment standards.
Lightning NOxatmosphere interactive emissionsCESM/CAM-Chem, WACCM and MUSICAScale aware production of lightning NOx.
Upper boundary conditionsExternal forcingCESM/CAM-Chem, WACCMOptional Upper boundary conditions for the low top L58 model created from a WACCM simulation (CAM Issue #533). NOy.
Marine Organic Aerosol Emissions emissionsCESM/CAM-Chem, WACCM and MUSICA

Add emissions of marine aerosols (CAM Issue #531).

Nitrate aerosolsaerosol mechanismCESM/CAM-Chem, WACCM and MUSICA

Implementation of MOSIAC and CARMA with nitrate aerosols. Danny Leung, Yunqian Zhu (NOAA).

T3Schemistry mechanismCESM/CAM-Chem, WACCM and MUSICA

Urban chemistry relevant mechanism. Publication in prep. Duseong Jo (Seoul National University).

CARMA implementationcomplex aerosolsCESM/CAM-Chem, WACCM and MUSICA

 

Interactive methaneemissionsCESM/CAM-Chem, WACCM and MUSICA

Benjamin Gaubert

Previous updates

Previous updates that have happened been implemented in the model.

Feature UpdateComponentRelevant modelContibutor(s)NotesDate Finalized
T4S Chemistry Mechanismchemistry mechanismCESM/CAM-Chem, WACCM and MUSICALouisa EmmonsSimplified tropospheric and stratospheric chemistry to be used for longer scale runs (e.g. CMIP7).
Simple Chemistrychemistry mechanismCAM7

Duseong Jo (Seoul National University), Louisa Emmons

Simple chemistry (for CAM7)  with updated SOA parameterization to support tropospheric aerosol formation (MAM4) (CAM Issue #727). https://doi.org/10.5194/gmd-16-3893-2023

Feb 7, 2023
OASISSinteractive emissionsCESM/CAM-Chem, WACCM and MUSICASiyuan Wang

Online DMS emissions based on Online Air-Sea Interface for Soluble  Species (OASISS)

2019