Agenda of the developments

Description of the development Agenda for 2015 : Agenda development of CMIP6

The agenda propose a set of Actions by little groups to be done before 2015 for merging into the TRUNC all developments that are needed to perform CMIP6 v1 (and also the Very low resolution case focussing on Chemistry)

Note that we agreed that CMIP6 will be done only with the TRUNC so that we need to merge all developments into the TRUNC

For each "merging Dev tasks" few informations are also provided in the attached pdf

Any remarks, progresses about each task should be reported in the section below

Working Groups

Developement of the physical component for CMIP6-V1

See specific page of the Agenda and progresses under Physic for CMIP6?

Developement of the Biogeochemical component for CMIP6-V1

See specific page of the Agenda and progresses under Biogeochemistry for CMIP6

Improvement of Land-cover management (LCC) for CMIP6-V1

See specific page of the Agenda and progresses under LandCoverChanges for CMIP6

MERGES: progress and comments

To be updated when questions appear or when developments are improving

• 11 layers soil hydrology (ready)

Resp: Jan, Agnes,

Improvement over summer with “some work on W stress functions”

No large conceptual changes

• Common soil vertical discretization between Hydrology and Thermics (ready)

Resp: Frederique, Agnes, Jan

Soil thermics goes up to 10 meter

Hydrology stops most likely at 2 m; Test by Fuxing to choose for CM6 are ongoing

a general “scheme” to have flexible depth need to be implemented (following a group discussion in Jan 2015)

• New soil thermal properties (function of USDA soil texture classes) (ready)

Tests made by Agnes & Fuxing & Frederique ?

• Soil freezing following I. Gouttevin’s Phd (ready)

Current scheme conserve energy on annual basis (from freezing/thawing) and will be used as default.

Revision is planned for “instantaneous” conservation (late 2015)

Use of the "Diag_level" should be droped after the

Need a working group (IG, GK, … ?)

• New 3 layers snow module following Tao’s work

Resp: Catherine, Jan, Tao, Philippe C

Trunc contain the latest version used in MICT (since Mai)

Ongoing improvement to have a snow fraction and fully implicit coupling

Action followed by a little group (FC, AD, JP, CO, JLD, PP, PC, TW, GK, JG, PM) with possible implementation by Fuxing and Jan

• Adjusted albedos (en cours: objectif Juin 2015)

Replace Bares Soil albedo by the “MODIS – Background Albedo” from JRC-TIP or from ECOCLIMAP-2

Optimize the NIR and VIS 12 vegetation albedos using MODIS global albedo

Ongoing action by PP and VB in Mai-June

Resp. : Philippe P, Vladislav, Frederique

• Nitrogen cycle (Autumn 2015)

Resp: NV, DG, SP, BG,

Code ready, under debugging phase ; several persons involved (NV, SP, DG,…)

Possible large impact on climate simulations: NEED TO LAUNCH first global

Test NO later than Mid October 2015

Global forced and coupled tests to be done before end of 2015

• Permafrost and Yedoma deposit (to be decided, autumn 2015)

Resp: PC, SP, ...

Permafrost module currently implemented in MICT version

Main impact is a source of CO2 to the Atm.; small impact on soil thermal properties

Yedoma (deep permafrost): impact through CO2 emissions

“coupling” with the new E/W soil discretization need to be done;

Extrapolation of the W content below soil W depth to be chosen

Need substantial work!

Crops Addition of a distinction between winter and spring C3 crops (phenology) Small change to be added autumn 2015 POSSIBLE inclusion of ORC-CROP modules (to be discuss Autumn 2015). Resp: Nicolas 1-2, Philippe C., Xuichen

Fires following SPITFIRE (to be decided) Coupling with Trunc to be done in September 2015 (small effort) Forcing for “human-induced” fires need to be prepared Modification of the albedo following fires under “implementation” Implementation with ORC-CAN: need to select “burned” trees ! Resp: Patricia, Yue Chao, Philippe C.

DGVM (late 2015) Ready for the High latitude PFTs ; Ongoing “check/calibration” for the tropics Update of the Trunc before summer 2015 (for Paleo simul tests) Re-calibration “needed” when Nitrogen cycle will be included Implementation with ORC-CAN will require substantial tests/dev. Resp: Dan Zhu, Philippe C., Nicolas Viovy