GEOS-Chem v9-01-02 benchmark history
On this page we have posted complete information about all benchmark simulations (both 1-month and 1-year) for GEOS-Chem v9-01-02.
Contents
v9-01-02d
Here is the assessment form for 1-month benchmark simulation v9-01-02c.
Description | |
---|---|
New features added into GEOS-Chem: |
|
Developer name(s) and institution(s): | |
Version, resolution, met fields used: | v9-01-02, GEOS-5 (47L), 4x5 |
1-month benchmark finished on: | Tue Jul 26 12:35:13 EDT 2011 |
Compared to previous benchmark: | v9-01-02c |
This update will impact: (select all that apply with boldface) |
Advection, BL Mixing, Convection, Met Fields, Dry Dep, Wet Dep, Stratosphere, Anthro Emiss, Biogenic Emiss, Biomass Emiss, Photolysis, Chemistry, Diagnostics, Other (please specify): |
Plots may be viewed at: | ftp://ftp.as.harvard.edu/pub/geos-chem/1mo_benchmarks/v9-01-02d/ |
Metrics | |
Global mean OH (from log file): | 13.1838752732688 x 105 molec cm-3 |
Methyl chloroform lifetime: | 4.7493 years |
Did either of these change by more than 5%? | No. |
At the SURFACE, list all species that changed by 10% or more: | none |
Comments on SURFACE differences: | |
At 500 hPa, list all species that changed by 10% or more: | none |
Comments on 500 hPa differences: | |
In the ZONAL MEAN differences, list all species that changed by 10% or more: | none |
Comments on ZONAL MEAN differences: | |
In the EMISSION RATIO maps, list all species that changed by 10% or more: | none |
Comments on EMISSION RATIO differences: | |
Additional or summary comments: | The output file from this benchmark (ctm.bpch.v9-01-02d) is 100% binary identical to the output file from the previous benchmark (ctm.bpch.v9-01-02c). |
Approval | |
Requires further investigation: | No |
Approved: | YES |
Date of approval: | 26 Jul 2011 |
--Bob Y. 14:52, 26 July 2011 (EDT)
v9-01-02c
Here is the assessment form for 1-month benchmark simulation v9-01-02c.
Description | |
---|---|
New features added into GEOS-Chem: | |
Developer name(s) and institution(s): |
|
Version, resolution, met fields used: | v9-01-02, GEOS-5 (47L), 4x5 |
1-month benchmark finished on: | Wed Jul 20 16:47:00 EDT 2011 |
Compared to previous benchmark: | v9-01-02a |
This update will impact: (select all that apply with boldface) |
Advection, BL Mixing, Convection, Met Fields, Dry Dep, Wet Dep, Stratosphere, Anthro Emiss, Biogenic Emiss, Biomass Emiss, Photolysis, Chemistry, Diagnostics, Other (please specify): Chemical species restart file |
Plots may be viewed at: | ftp://ftp.as.harvard.edu/pub/geos-chem/1mo_benchmarks/v9-01-02c/ |
Metrics | |
Global mean OH (from log file): | 13.1838752732688 x 105 molec cm-3 |
Methyl chloroform lifetime: | 4.7493 years |
Did either of these change by more than 5%? | No. The Mean OH is identical to v9-01-02a and the MCL lifetime has a small difference in the very last digit (see Summary Comments). |
At the SURFACE, list all species that changed by 10% or more: | none |
Comments on SURFACE differences: | |
At 500 hPa, list all species that changed by 10% or more: | |
Comments on 500 hPa differences: | |
In the ZONAL MEAN differences, list all species that changed by 10% or more: | none |
Comments on ZONAL MEAN differences: | |
In the EMISSION RATIO maps, list all species that changed by 10% or more: | none |
Comments on EMISSION RATIO differences: | |
Additional or summary comments: | NOTE: This update corrects an erroneous situation in the chemical species restart file (aka "CSPEC restart file". This fix ONLY gets invoked for long GEOS-Chem simulations that have to be broken into several stages for the purpose of submitting to computational queues with fixed time limits. When each run stage ends, GEOS-Chem will write the chemical species concentrations into a restart file. When the next run stage begins, GEOS-Chem will read the chemical species information back into the CSPEC array (which gets passed to the SMVGEAR and KPP solvers).
For short simulations that can finish within the time limits of the computatational queues (such as this 1-month benchmark simulation), we do not use the CSPEC restart file. Therefore, when comparing v9-01-01c to v9-01-01a, we should expect to see identical results to v9-01-02a (which we do see as evidenced by the plots and Mean OH concentration). In v9-01-02c, we use the grid box surface areas saved out directly from GEOS-Chem (via the ND69 diagnostic) to compute the MCL lifetime. In v9-01-02a, we computed the grid box surface areas using IDL code. The surface areas from both methods should be similar, but perhaps not strictly numerically equal to all double-precision digits. This causes the very slight difference in the last digit of the MCL lifetime for v9-01-02c. |
Approval | |
Requires further investigation: | No |
Approved: | YES |
Date of approval: | 21 Jul 2011 |
--Bob Y. 10:51, 21 July 2011 (EDT)
v9-01-02b
Here is the assessment form for 1-month benchmark simulation v9-01-02b.
NOTE: This benchmark requires further investigation, so we are moving ahead with other updates. (Bob Y, 21 Jul 2011)
Description | |
---|---|
New features added into GEOS-Chem: |
|
Developer name(s) and institution(s): |
|
Version, resolution, met fields used: | v9-01-02, GEOS-5 (47L), 4x5 |
1-month benchmark finished on: | Wed Jul 6 15:14:37 EDT 2011 |
Compared to previous benchmark: | v9-01-02a |
This update will impact: (select all that apply with boldface) |
Advection, BL Mixing, Convection, Met Fields, Dry Dep, Wet Dep, Stratosphere, Anthro Emiss, Biogenic Emiss, Biomass Emiss, Photolysis, Chemistry, Diagnostics, Other (please specify): |
Plots may be viewed at: | ftp://ftp.as.harvard.edu/pub/geos-chem/1mo_benchmarks/v9-01-02b/ |
Metrics | |
Global mean OH (from log file): | 13.0621353054878 x 105 molec cm-3 |
Methyl chloroform lifetime: | 4.7987 years |
Did either of these change by more than 5%? | No |
At the SURFACE, list all species that changed by 10% or more: | NOx, PAN, ALK4, ISOP, HNO3, H2O2, RCHO, MVK, MACR, PMN, PPN, PRPE, CH2O, N2O5, HNO4, MP, DMS, SO2, SO4, SO4s, MSA, NH3, NH4, NIT, NITs |
Comments on SURFACE differences: | The color scale saturates (implying large differences) for HNO3, H2O2, CH2O, MP, SO2, NH3, NIT |
At 500 hPa, list all species that changed by 10% or more: | NOx, ISOP, HNO3, H2O2, MVK, MACR, PMN, PRPE, CH2O, N2O5, HNO4, MP, DMS, SO2, SO4, SO4s, MSA, NH3, NH4, NIT, NITs |
Comments on 500 hPa differences: | The color scale saturates (implying large differences) for ISOP, H2O2, MVK, MACR, PMN, PRPE, CH2O, MP, NH3, NIT |
In the ZONAL MEAN differences, list all species that changed by 10% or more: | NOx, ALK4, ISOP, HNO3, H2O2, MEK, ALD2, MVK, MACR, PMN, PRPE, CH2O, N2O5, HNO4, MP, DMS, SO2, SO4, SO4s, MSA, NH3, NH4, NIT, OH |
Comments on ZONAL MEAN differences: | Changes are typically are mid and high latitudes. |
In the EMISSION RATIO maps, list all species that changed by 10% or more: | none |
Comments on EMISSION RATIO differences: | none |
Additional or summary comments: | |
Approval | |
Requires further investigation: | Pending discussion with Daniel Jacob. (Helen Amos, 07 Jul 2011) |
Approved: | |
Date of approval: |
--Bob Y. 10:30, 21 July 2011 (EDT)
v9-01-02a
Here is the assessment form for 1-month benchmark simulation v9-01-02a.
Description | |
---|---|
New features added into GEOS-Chem: | |
Developer name(s) and institution(s): |
|
Version, resolution, met fields used: | v9-01-02, GEOS-5 (47L), 4x5 |
1-month benchmark finished on: | Mon Jun 13 18:02:07 EDT 2011 |
Compared to previous benchmark: | v9-01-01 |
This update will impact: (select all that apply with boldface) |
Advection, BL Mixing, Convection, Met Fields, Dry Dep, Wet Dep, Stratosphere, Anthro Emiss, Biogenic Emiss, Biomass Emiss, Photolysis, Chemistry, Other (please specify): Tropopause |
Plots may be viewed at: | ftp://ftp.as.harvard.edu/pub/geos-chem/1mo_benchmarks/v9-01-02a/ |
Metrics | |
Global mean OH (from log file): | 13.1838752732688 x 105 molec/cm3 |
Methyl chloroform lifetime: | 4.7490 years |
Did either of these change by more than 5%? | No |
At the SURFACE, list all species that changed by 10% or more: | None |
Comments on SURFACE differences: | None |
At 500 hPa, list all species that changed by 10% or more: | NIT, NH3 |
Comments on 500 hPa differences: | Follow up calculations indicate that these changes are owing to an unresolved OpenMP issue, not the v9-01-02a code updates. NIT seems particularly sensitive to this issue, and this probably drives changes in NH3. |
In the ZONAL MEAN differences, list all species that changed by 10% or more: | NOx, N2O5, NIT, NH3 |
Comments on ZONAL MEAN differences: |
|
In the EMISSION RATIO maps, list all species that changed by 10% or more: | None |
Comments on EMISSION RATIO differences: | No changes in emissions. |
Additional or summary comments: |
|
Approval | |
Requires further investigation: | See above |
Approved: | Daven Henze |
Date of approval: | 06/28/2011 |
--Bob Y. 10:30, 21 July 2011 (EDT)