Data Set Information
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| DATA_SET_NAME |
AMES MARS GENERAL CIRCULATION MODEL 5 LAT VARIABLES V1.0
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| DATA_SET_ID |
MODEL-M-AMES-GCM-5-LAT-V1.0
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| NSSDC_DATA_SET_ID |
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| DATA_SET_TERSE_DESCRIPTION |
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| DATA_SET_DESCRIPTION |
Data Set Overview : The Ames Mars General Circulation Model is a three dimensional model based on the primitive equations of meteorology. It includes the radiative effects of dust and carbon dioxide as well as other features such as large-scale topography (see [POLLACKETAL1990]; [BARNESETAL1993]; and [HABERLEETAL1993]). The model has 25 latitude bins (7.5 degree resolution), 40 longitude bins (9.0 degree resolution) and 13 vertical layers. The spacing between each layer varies. The following array defines the layer spacing from the tropopause to the surface in mbars: 0.005779, 0.009511, 0.01568, 0.02585, 0.04263, 0.07025, 0.1159, 0.1544, 0.1586, 0.1364, 0.1223, 0.09270, 0.05000. The model spins up from a resting isothermal state with the global temperature equal to 200K. The spin up starts with hour equal to 0. The model saves data every 1.5 hours for a total of 16 hour bins per day. Some other initial conditions that are set when the model spins up: INITIAL SURFACE PRESSURE : 7.60 mbars TROPOPAUSE PRESSURE : 0.06699 mbars DUST OPTICAL DEPTH : 0.3 (for periods where Ls < 200) DUST OPTICAL DEPTH : 1.0 (for periods where Ls > 200) ICE CLOUD OPTICAL DEPTH : 0.00 TIME STEP : 9.25 minutes RICHARDSON NUMBER TIME SCALE : 200000000. seconds SCALE HEIGHT FOR DUST PROFILE : 0.03000 TIME CONSTANT FOR RAYLEIGH FRICTION : 2.0000 days This data set is composed of 20 to 30 day averages of the data resulting from model runs simulating martian conditions for four Ls periods during 1977 (Ls 10-24, 94-103, 202-220, and 267-286). Native start time : 10.15 AREOCENTRIC LON, EARTH YEAR 1977 Native stop time : 286.09 AREOCENTRIC LON, EARTH YEAR 1977 The latitude data set contains the time and zonally averaged values for the mean surface and sea level pressures and for several of the heat and angular momentum variables. The data are given as a function of latitude. The calculations are done in the pi coordinate system; pi coordinates are located at the intersection points of a set of evenly spaced latitude circles and a set of evenly spaced longitude circles. The data set is in the following configuration (listed as field followed by description): LATITUDE Latitude, degrees SURF_PRES Mean surface pressure, mbars SEA_LEV_PRES Mean sea level pressure, mbars MASS_FLOW Mass flow, m/s CO2 mass budget parameters -------------------------- CO2_ATM CO2 atmospheric condensation, kg/m**2/sec CO2_SUR CO2 surface condensation, kg/m**2/sec CO2_TOT Total CO2 condensation, kg/m**2/sec Dynamical heat budget parameters -------------------------------- HEAT_OC Heating due to overturning cells, watt/m**2 HEAT_CF Heating due to condensation flow, watt/m**2 HEAT_SE Heating due to stationary eddies, watt/m**2 HEAT_TE Heating due to transient eddies, watt/m**2 Total heat budget parameters ---------------------------- HEAT_NET Net Radiation, watt/m**2 HEAT_LH Latent heat, watt/m**2 HEAT_TR Heating due to transport, watt/m**2 HEAT_FD Heating due to frictional dissipation, watt/m**2 HEAT_SH Sensible heat, watt/m**2 HEAT_SUM Total heating, watt/m**2 Dynamical angular momentum budget parameters -------------------------------------------- MOMENT_OC Angular momentum due to overturning cells, kg/sec**2 MOMENT_CF Angular momentum due to mass flow, kg/sec**2 MOMENT_SE Angular momentum due to stationary eddies, kg/sec**2 MOMENT_TE Angular momentum due to transient eddies, kg/sec**2 Total angular momentum budget parameters ---------------------------------------- MOMENT_MT Momentum due to mountain torque, kg/sec**2 MOMENT_GF Momentum due to ground frictional torque, kg/sec**2 MOMENT_THT Angular momentum due to total horizontal transport, kg/sec**2 MOMENT_RF Angular momentum due to Rayleigh friction torque, kg/sec**2 MOMENT_CT Angular momentum due to condensation torque, kg/sec**2 MOMENT_SUM Torque sum, kg/sec**2
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| DATA_SET_RELEASE_DATE |
1995-01-01T00:00:00.000Z
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| START_TIME |
1994-11-01T12:00:00.000Z
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| STOP_TIME |
1994-12-01T12:00:00.000Z
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| MISSION_NAME |
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| MISSION_START_DATE |
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| MISSION_STOP_DATE |
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| TARGET_NAME |
MARS
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| TARGET_TYPE |
PLANET
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| INSTRUMENT_HOST_ID |
MODEL
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| INSTRUMENT_NAME |
UNKNOWN
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| INSTRUMENT_ID |
AMES-GCM
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| INSTRUMENT_TYPE |
UNKNOWN
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| NODE_NAME |
Planetary Atmospheres
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| ARCHIVE_STATUS |
ARCHIVED
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| CONFIDENCE_LEVEL_NOTE |
Confidence Level Overview : The Ames Mars General Circulation Model is a three dimensional computer model based upon the primitive equations of meteorology. It includes the radiative effects of dust and carbon dioxide as well as other features such as large-scale topography. Model results are dependent upon the selected initial conditions and spatial and temporal resolution of the model, and may not fully incorporate the effects of some physical processes represented by paramaterizations made by the model.
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| CITATION_DESCRIPTION |
Citation TBD
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| ABSTRACT_TEXT |
The Ames Mars General Circulation Model is a three dimensional model based on the primitive equations of meteorology. It includes the radiative effects of dust and carbon dioxide as well as other features such as large-scale topography (see [POLLACKETAL1990]
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| PRODUCER_FULL_NAME |
MAUREEN BELL
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| SEARCH/ACCESS DATA |
Atmospheres Online Archives
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