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CCSM ATM crosswalk to the PCMDI IPCC Standard Output Requirements |
<h4 style="color: rgb(0, 0, 0);">Initial draft: LB March 24 2004
<style ="color: rgb(0, 0, 0);"></style>Corrections: LB March 25 2004
<style ="color: rgb(255, 0, 0);"></style><span
style="color: rgb(255, 0, 0);">Additions: GS August 3 2004</span></h4>
Overview
The following tables were extracted from the <a
href="http://www-pcmdi.llnl.gov/cmip/standard_output.html">PCMDI IPCC
standard Output requirements</a> document dated 20 July 2004.
Each table a column listing the CCSM
atmosphere model history variables needed to
generate the corresponding PCMDI field.
Monthly mean and time-independent data
<caption> <b><i>Monthly Mean Atmosphere + Land Surface 2-D
(latitude,
longitude) Data</i></b> </caption><tbody>
| air_pressure_at_sea_level |
|
(PRECC+PRECL)
*densityH ~2~0 |
| kg m<sup>-2</sup> s<sup>-1</sup> |
|
| air_temperature<sup>a</sup> |
|
| surface_downward_eastward_stress |
|
| surface_downward_northward_stress |
|
| surface_upward_latent_heat_flux |
(Lv+Lf)*QFLX -
Lf10-3
(PRECC+PRECL) |
|
| surface_upward_sensible_heat_flux |
|
| surface_downwelling_longwave_flux |
|
| surface_upwelling_longwave_flux |
|
| surface_downwelling_shortwave_flux |
|
| surface_upwelling_shortwave_flux |
|
(PRECSC+PRECSL
)*densityH20 |
| kg m<sup>-2</sup> s<sup>-1</sup> |
|
| convective_precipitation_flux |
| kg m<sup>-2</sup> s<sup>-1</sup> |
|
| atmosphere_water_vapor_content |
|
| eastward_wind<sup>d</sup> |
|
| northward_wind<sup>d</sup> |
|
| specific_humidity<sup>d</sup> |
|
| atmosphere_eastward_stress_due_to_gravity_wave_drag |
| <span style="color: rgb(255, 0, 0);">TAUGWX</span> |
|
| atmosphere_northward_stress_due_to_gravity_wave_drag |
| <span style="color: rgb(255, 0, 0);">TAUGWY</span> |
|
| toa_incoming_shortwave_flux |
|
| toa_outgoing_shortwave_flux |
|
| toa_outgoing_longwave_flux |
|
| net_downward_radiative_flux_at_top_of_atmosphere_model |
|
| surface_downwelling_shortwave_flux_assuming_clear_sky |
|
| surface_upwelling_shortwave_flux_assuming_clear_sky |
|
| surface_downwelling_longwave_flux_assuming_clear_sky |
|
| toa_outgoing_longwave_flux_assuming_clear_sky |
|
| toa_outgoing_shortwave_flux_assuming_clear_sky |
|
| atmosphere_cloud_condensed_water_content |
|
| atmosphere_cloud_ice_content |
|
|
<sup>a</sup>Also known as "surface air temperature."
Distinguish from 3-D air temperature by specifying a size-one dimension
of
height with coordinate value 2 m,
or by including the CF-convention
"coordinates" attribute, containing the name of a scalar
coordinate variable for height with the value of 2 m.
<sup>b</sup>In the upper 0.1 m only.
<sup>c</sup>Total for all soil layers.
<sup>d</sup>Near-surface value.
Distinguish from 3-D distribution by specifying a size-one dimension of
height with coordinate value 10 m (for near-surface wind) or 2 m (for
near-surface humidity),
or by including the CF-convention "coordinates" attribute,
containing the name of a scalar coordinate variable for height
with the value of 10 or 2 m.
<caption> <b><i>Time-independent Land Surface 2-D (latitude,
longitude) Data</i></b> </caption><tbody>
| m<sup>-2 </sup>s<sup>-2</sup> |
|
| soil_moisture_content_at_field_capacity |
|
|
<caption> Monthly Mean Atmosphere 3-D Data<sup>a</sup>
</caption><tbody>
| cloud_area_fraction_in_atmosphere_layer |
|
| area_fraction_below_surface<sup>b</sup> |
|
| mole_fraction_of_o3_in_air |
|
|
<sup>a</sup>Except for the variable
cloud_area_fraction_in_atmosphere_layer, this data
must be provided on pressure levels. The set of pressure levels must
include at least the AMIP standard pressure levels (= NCEP reanalysis
levels):
1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50,
30, 20, 10 hPa.
_<sup>b</sup>_Fraction of the time that a pressure surface lies
below ground.
Daily mean and 3-hourly data
<i>NOTE:
The following daily mean data may be provided for a smaller time period
than the monthly means</i>:
<caption> Daily Mean Atmosphere 2-D (latitude, longitude) Data
</caption><tbody>
| air_pressure_at_sea_level |
|
| kg m<sup>-2</sup> s<sup>-1</sup> |
|
| air_temperature<sup>a, b</sup> |
|
| air_temperature<sup>a, c</sup> |
|
| air_temperature<sup>a</sup> |
|
| surface_upward_latent_heat_flux |
(Lv+Lf)*QFLS -
Lf10-3(
PRECC+PRECL) |
|
| surface_upward_sensible_heat_flux |
|
| surface_downwelling_longwave_flux |
|
| surface_upwelling_longwave_flux |
|
| surface_downwelling_shortwave_flux |
|
| surface_upwelling_shortwave_flux |
|
| eastward_wind<sup>d</sup> |
|
| northward_wind<sup>d</sup> |
|
| toa_outgoing_longwave_flux |
|
|
<sup>a</sup>Also known as "surface air temperature."
Distinguish from 3-D air temperature by specifying a size-one dimension
of
height with coordinate value 2 m,
or by including the CF-convention
"coordinates" attribute, containing the name of a scalar
coordinate variable for height with the value of 2 m.
<sup>b</sup>Daily minimum value. Designate by a cell_methods
attribute specifying "time: minimum within days,"
where "time" is the name of the time dimension.
<sup>c</sup>Daily maximum value.
Designate by a cell_methods attribute specifying "time: maximum within
days,"
where "time" is the name of the time dimension.
<sup>d</sup>Near-surface value.
Distinguish from 3-D distribution by specifying a size-one dimension of
height with coordinate value 10 m,
or by including the CF-convention "coordinates" attribute,
containing the name of a scalar coordinate variable for height
with the value of 10 m.
<caption> Daily Mean Atmosphere 3-D Data<sup>a</sup>
</caption><tbody>
|
<sup>a</sup>
This data must be provided on pressure levels.
The set of pressure levels must include at least the following subset
of AMIP standard pressure levels:
1000, 925, 850, 700, 600, 500, 400, 300, 200 hPa.
<i>NOTE:
The following 3-hourly data may be provided for a smaller time period
than the daily means
but must extend for at least 1 year.
3-hourly precipitation should be an average; other 3-hourly data should
be instantaneous "snapshots"</i>:
<caption> <b>3-hourly 2-D (latitude, longitude) Data
(at 0, 3, 6, 9, 12, 15, 18, 21 Z):</b> </caption><tbody>
| air_pressure_at_sea_level |
|
(PRECC+PRECL)
*densityH20 |
| kg m<sup>-2</sup> s<sup>-1</sup> |
|
| air_temperature<sup>a</sup> |
|
| surface_upward_latent_heat_flux |
(Lv+Lf)*QFLS -
Lf10-3
(PRECC+PRECL) |
|
| surface_upward_sensible_heat_flux |
|
| surface_downwelling_longwave_flux |
|
| surface_upwelling_longwave_flux |
|
| surface_downwelling_shortwave_flux |
|
| surface_upwelling_shortwave_flux |
|
|
<sup>a</sup>Also known as "surface air temperature."
Distinguish from 3-D air temperature by specifying a size-one dimension
of
height with coordinate value 2 m,
or by including the CF-convention
"coordinates" attribute, containing the name of a scalar
coordinate variable for height with the value of 2 m.
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