Opened 11 months ago

Last modified 8 months ago

#698 new task

Check global and regional GPP

Reported by: luyssaert Owned by: somebody
Priority: critical Milestone: ORCHIDEE 4.1
Component: Biogeochemical processes Version: trunc
Keywords: Cc:

Description (last modified by luyssaert)

Check: (1) the global GPP after an analytical spinup, transient simulation and FG2. The global GPP should be between 100 and 150 Pg C y-1; (2) the regional distribution (as defined in the mapper). It should be in line with tag 2.1.; (3) time series of LAI should be screened (LAI script); and (4) spatial patterns of the LAI time series should be screened (visual).

Notes for check 4:
In r6826 MTC4 grows well along the Pacific West Coast which is a hotspot for the MTC but it grows poorly in the Rocky Mountains. Too much water stress?

Attachments (7)

gpp2_3.gif (23.3 KB) - added by luyssaert 11 months ago.
gpp4_5.gif (25.7 KB) - added by luyssaert 11 months ago.
gpp6_7.gif (21.9 KB) - added by luyssaert 11 months ago.
gpp8_9.gif (21.1 KB) - added by luyssaert 11 months ago.
gpp10_11.gif (24.4 KB) - added by luyssaert 11 months ago.
gpp12_13.gif (27.0 KB) - added by luyssaert 11 months ago.
gpp14_15.gif (21.7 KB) - added by luyssaert 11 months ago.

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Change History (9)

Changed 11 months ago by luyssaert

Changed 11 months ago by luyssaert

Changed 11 months ago by luyssaert

Changed 11 months ago by luyssaert

Changed 11 months ago by luyssaert

Changed 11 months ago by luyssaert

Changed 11 months ago by luyssaert

comment:1 Changed 11 months ago by luyssaert

  • PFT 2 and 3: GPP in the tropical core should go up to 4000 gC y-1 for both tropical forest PFTs. Current extreme values just approach 3000 gC y-1. See figure

Proposed changes:

  • PFT 6: Temperate deciduous trees should have a GPP going up to 1500 gC y-1 in central Europe. Current extreme values just approach 1100 gC y-1. See figure

Proposed changes:

  • PFT 7: Boreal eevrgreen trees should have a GPP going up to 1100 gC y-1 in southern Scandinavia. Current values in that region are below 700 gC y-1. See figure

Proposed changes:

  • PFT 8 and 9: cannot sustain their LAI and die continuously from low productivity. See figure. See also ticket #677.

Proposed changes: double k_latosa, reduce psi_leaf to -3

  • PFT 10: C3 temperate grasslands should have a GPP going up to 1500 gC y-1 in central Europe. Current values in that region are below approach 800 gC y-1. See figure

Proposed changes:

  • PFT 12: C3 temperate croplands should have a GPP going up to 1500 gC y-1 in central Europe. Current values in that region are around 1100 gC y-1. See figure

Proposed changes:

  • PFT 14: Tropical C3 grasslands grow in drier regions. What is an acceptable GPP? Current simulations are below 700 gC y-1. See figure

Proposed changes:

Last edited 11 months ago by luyssaert (previous) (diff)

comment:2 Changed 8 months ago by luyssaert

  • Description modified (diff)
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