Stream: 0.1° JRA BGC Run

Topic: Overview

Matt Long (Feb 26 2020 at 22:24):

We aim to run 1 JRA forcing cycle with BGC, depending on model cost.

Here is a sketch of the basic run details.

Forcing

• Fe sediment flux: prepare new dataset
• Atm Fe and Dust: driver_derived, cycle 1850
• Atm NOx, NHy: cycle 1850
• River nutrients: set to 1900 (same mapping files as runoff)
• CO2 = 284.7

Initial conditions

• T & S, JRA 0.1 run
• BGC 1° spin-up
  - ladjust_bury_coef = .true.
  - Bilinear flux mapping to be consistent with 0.1°

We will consider spawning two hi-res integrations, one initialized from obs, another from 1°.

Model configuration

• CESM2.2 tag with JRA and explicit calcifier mods?
• Explicit calcifier
• Best parameter values from KK runs
• ladjust_bury_coef = .false.
• SW absorption based on prognostic chl
• Advection: upwind3 for BGC tracers, centered for T, S, DIC, ALK

Matt Long (Feb 26 2020 at 22:53):

Initial tasks.

• @Michael Levy: get model tag in order, begin to configure compset
• @Matthew Long: finalize Fe sediment forcing, ensure river forcing is in place
• @Keith Lindsay: initiate discussion on output fields

Outstanding questions:

• What is the model cost? How does this depend on output.
• How many years can we run?
• Will the pH solver be happy with negative SALT?

It looks like the EMB code does not consider negative SALT in computing virtual flux.

Last updated: May 16 2025 at 17:14 UTC