Error trying to save 2d PFT outputs at landunit level when not gridded

[samsrabin]

Brief summary of bug

I get an error when trying to save 2d PFT history outputs at landunit level with hist_dov2xy = .false..

General bug information

CTSM version you are using: ctsm5.4.038

Does this bug cause significantly incorrect results in the model's science? No

Configurations affected: See above.

Details of bug

I tested the following combinations factorially in a 3-day simulation with annual history timesteps (i.e., I only checked for errors in initialization). The above (in bold here) is the only one that caused a problem.

• hist_type1d_pertape: COLS, LAND, and GRID
• hist_dov2xy: true, false
• 1d vars (GPP, GRAINC_TO_FOOD) and 2d vars (SDATES, GRAINC_TO_FOOD_PERHARV, GRAINC_TO_FOOD_ANN)

Important details of your setup / configuration so we can reproduce the bug

• Compset: IHistClm60BgcCropCrujra
• Resolution: f10_f10_mg37

Important output or errors that show the problem

Debug false:

forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image              PC                Routine            Line        Source
libc.so.6          000014CF17BA5900  Unknown               Unknown  Unknown
.                  00000000011EAE6A  Unknown               Unknown  Unknown
cesm.exe           00000000006F8A4C  p2l_2d                    457  subgridAveMod.F90

Debug true:

forrtl: severe (408): fort: (2): Subscript #1 of the array SCALE_P2C has value 76 which is greater than the upper bound of 75

Image              PC                Routine            Line        Source
cesm.exe           0000000000D7DA3A  p2l_2d                    448  subgridAveMod.F90
cesm.exe           0000000000B619C0  hist_update_hbuf_        1912  histFileMod.F90
cesm.exe           0000000000B4481E  hist_update_hbuf         1392  histFileMod.F90
cesm.exe           000000000092C0E8  clm_drv                  1485  clm_driver.F90
cesm.exe           000000000086BED4  modeladvance              913  lnd_comp_nuopc.F90