netcdf C6_4630989_1_779872366898293243 {
dimensions:
lat = 192 ;
nbnd = 2 ;
lon = 288 ;
time = UNLIMITED ; // (360 currently)
variables:
float cod(time, lat, lon) ;
cod:_FillValue = 1.e+20f ;
cod:cell_measures = "area: areacella" ;
cod:cell_methods = "area: time: mean" ;
cod:comment = "sum(TOT_CLD_VISTAU, \"lev\")" ;
cod:coordinates = "time lat lon" ;
cod:description = "The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_thickness) on traversing the path. A coordinate variable of radiation_wavelength or radiation_frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. \"Cloud\" means the component of extinction owing to the presence of liquid or ice water particles. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase." ;
cod:frequency = "mon" ;
cod:id = "cod" ;
cod:long_name = "Cloud Optical Depth" ;
cod:mipTable = "AERmon" ;
cod:missing_value = 1.e+20 ;
cod:out_name = "cod" ;
cod:prov = "AERmon ((isd.003))" ;
cod:realm = "aerosol" ;
cod:standard_name = "atmosphere_optical_thickness_due_to_cloud" ;
cod:time = "time" ;
cod:time_label = "time-mean" ;
cod:time_title = "Temporal mean" ;
cod:title = "Cloud Optical Depth" ;
cod:type = "real" ;
cod:units = "1" ;
cod:variable_id = "cod" ;
double lat(lat) ;
lat:axis = "Y" ;
lat:bounds = "lat_bnds" ;
lat:standard_name = "latitude" ;
lat:title = "Latitude" ;
lat:type = "double" ;
lat:units = "degrees_north" ;
lat:valid_max = 90. ;
lat:valid_min = -90. ;
double lon(lon) ;
lon:axis = "X" ;
lon:bounds = "lon_bnds" ;
lon:standard_name = "longitude" ;
lon:title = "Longitude" ;
lon:type = "double" ;
lon:units = "degrees_east" ;
lon:valid_max = 360. ;
lon:valid_min = 0. ;
double time(time) ;
time:axis = "T" ;
time:bounds = "time_bnds" ;
time:standard_name = "time" ;
time:title = "time" ;
time:type = "double" ;
time:units = "days since 0001-01-01 00:00:00" ;
time:calendar = "365_day" ;
double time_bnds(time, nbnd) ;
time_bnds:calendar = "noleap" ;
time_bnds:units = "days since 0001-01-01 00:00:00" ;
double lat_bnds(lat, nbnd) ;
lat_bnds:units = "degrees_north" ;
double lon_bnds(lon, nbnd) ;
lon_bnds:units = "degrees_east" ;
// global attributes:
:Conventions = "CF-1.7 CMIP-6.2" ;
:activity_id = "RFMIP" ;
:branch_method = "standard" ;
:branch_time_in_child = 0. ;
:branch_time_in_parent = 54385. ;
:case_id = "1566" ;
:cesm_casename = "f.e21.FWaerchem-piClim-control.f09_f09_mg17.CMIP6-piClim-control-WACCM.001" ;
:contact = "" ;
:creation_date = "2019-08-10T04:06:28Z" ;
:data_specs_version = "01.00.31" ;
:experiment = "Control simulation providing baseline for evaluating effective radiative forcing (ERF)" ;
:experiment_id = "piClim-control" ;
:external_variables = "areacella" ;
:forcing_index = 1LL ;
:frequency = "mon" ;
:further_info_url = "https://furtherinfo.es-doc.org/CMIP6.NCAR.CESM2-WACCM.piClim-control.none.r1i2p1f1" ;
:grid = "native 0.9x1.25 finite volume grid (192x288 latxlon)" ;
:grid_label = "gn" ;
:initialization_index = 2LL ;
:institution = "National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, 1850 Table Mesa Drive, Boulder, CO 80305, USA" ;
:institution_id = "NCAR" ;
:license = "CMIP6 model data produced by <The National Center for Atmospheric Research> is licensed under a Creative Commons Attribution-[]ShareAlike 4.0 International License (https://creativecommons.org/licenses/). Consult https://pcmdi.llnl.gov/CMIP6/TermsOfUse for terms of use governing CMIP6 output, including citation requirements and proper acknowledgment. Further information about this data, including some limitations, can be found via the further_info_url (recorded as a global attribute in this file)[]. The data producers and data providers make no warranty, either express or implied, including, but not limited to, warranties of merchantability and fitness for a particular purpose. All liabilities arising from the supply of the information (including any liability arising in negligence) are excluded to the fullest extent permitted by law." ;
:mip_era = "CMIP6" ;
:model_doi_url = "https://doi.org/10.5065/D67H1H0V" ;
:nominal_resolution = "100 km" ;
:parent_activity_id = "CMIP" ;
:parent_experiment_id = "piControl" ;
:parent_mip_era = "CMIP6" ;
:parent_source_id = "CESM2-WACCM" ;
:parent_time_units = "days since 0001-01-01 00:00:00" ;
:parent_variant_label = "r1i1p1f1" ;
:physics_index = 1LL ;
:product = "model-output" ;
:realization_index = 1LL ;
:realm = "aerosol" ;
:source = "CESM2 (2017): atmosphere: CAM6 (0.9x1.25 finite volume grid; 288 x 192 longitude/latitude; 70 levels; top level 4.5e-6 mb); ocean: POP2 (320x384 longitude/latitude; 60 levels; top grid cell 0-10 m); sea_ice: CICE5.1 (same grid as ocean); land: CLM5 0.9x1.25 finite volume grid; 288 x 192 longitude/latitude; 70 levels; top level 4.5e-6 mb); aerosol: MAM4 (0.9x1.25 finite volume grid; 288 x 192 longitude/latitude; 70 levels; top level 4.5e-6 mb); atmosChem: WACCM (0.9x1.25 finite volume grid; 288 x 192 longitude/latitude; 70 levels; top level 4.5e-6 mb; landIce: CISM2.1; ocnBgchem: MARBL (320x384 longitude/latitude; 60 levels; top grid cell 0-10 m)" ;
:source_id = "CESM2-WACCM" ;
:source_type = "AGCM BGC CHEM AER" ;
:sub_experiment = "none" ;
:sub_experiment_id = "none" ;
:table_id = "AERmon" ;
:tracking_id = "hdl:21.14100/c7f1ff14-5443-4210-a3eb-d6343e386459" ;
:variable_id = "cod" ;
:variant_info = "WACCM uncoupled (atmosphere and land) experiment with interactive vegetation in which sea surface temperatures (SST) and sea ice concentrations (SIC), fixed at model-specific pre-industrial control climatology." ;
:variant_label = "r1i2p1f1" ;
}