netcdf C6_4568753_1_15817839250408273062 { dimensions: axis_nbounds = 2 ; lon = 144 ; lat = 143 ; time = UNLIMITED ; // (1980 currently) variables: float lat(lat) ; lat:axis = "Y" ; lat:standard_name = "latitude" ; lat:long_name = "Latitude" ; lat:units = "degrees_north" ; float lon(lon) ; lon:axis = "X" ; lon:standard_name = "longitude" ; lon:long_name = "Longitude" ; lon:units = "degrees_east" ; double wavelength ; wavelength:name = "wavelength" ; wavelength:standard_name = "radiation_wavelength" ; wavelength:long_name = "Radiation Wavelength 550 nanometers" ; wavelength:units = "nm" ; double time(time) ; time:axis = "T" ; time:standard_name = "time" ; time:long_name = "Time axis" ; time:calendar = "gregorian" ; time:units = "days since 1850-01-01 00:00:00" ; time:time_origin = "1850-01-01 00:00:00" ; time:bounds = "time_bounds" ; double time_bounds(time, axis_nbounds) ; float od550bc(time, lat, lon) ; od550bc:online_operation = "average" ; od550bc:cell_methods = "area: time: mean" ; od550bc:interval_operation = "900 s" ; od550bc:interval_write = "1 month" ; od550bc:_FillValue = 1.e+20f ; od550bc:missing_value = 1.e+20f ; od550bc:coordinates = "wavelength" ; od550bc:standard_name = "atmosphere_optical_thickness_due_to_black_carbon_ambient_aerosol" ; od550bc:description = "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. 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. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. \"Aerosol\" means the suspended liquid or solid particles in air (except cloud droplets). \"Ambient aerosol\" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing." ; od550bc:long_name = "black carbon aod@550nm" ; od550bc:history = "none" ; od550bc:units = "1" ; od550bc:cell_measures = "area: areacella" ; // global attributes: :name = "/ccc/work/cont003/gencmip6/p25sima/IGCM_OUT/IPSLCM6/PROD/hist-spAer-all/CM61-LR-hist-spAer-all-1/CMIP6/ATM/od550bc_AERmon_IPSL-CM6A-LR_hist-spAer-all_r1i1p1f1_gr_%start_date%-%end_date%" ; :Conventions = "CF-1.7 CMIP-6.2" ; :creation_date = "2019-10-03T07:41:52Z" ; :tracking_id = "hdl:21.14100/ebee1ffd-ad14-4dce-b37e-96a4075f8604" ; :description = "Prescribed anthropogenic aerosol optical properties. All forcings" ; :title = "IPSL-CM6A-LR model output prepared for CMIP6 / RFMIP hist-spAer-all" ; :activity_id = "RFMIP" ; :contact = "
" ; :data_specs_version = "01.00.28" ; :dr2xml_version = "1.16" ; :experiment_id = "hist-spAer-all" ; :experiment = "historical simulation with specified anthropogenic aerosols" ; :external_variables = "areacella" ; :forcing_index = 1 ; :frequency = "mon" ; :further_info_url = "https://furtherinfo.es-doc.org/CMIP6.IPSL.IPSL-CM6A-LR.hist-spAer-all.none.r1i1p1f1" ; :grid = "LMDZ grid" ; :grid_label = "gr" ; :nominal_resolution = "250 km" ; :history = "none" ; :initialization_index = 1 ; :institution_id = "IPSL" ; :institution = "Institut Pierre Simon Laplace, Paris 75252, France" ; :license = "CMIP6 model data produced by IPSL is licensed under a Creative Commons Attribution-NonCommercial-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) and at https://cmc.ipsl.fr/. 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" ; :parent_mip_era = "CMIP6" ; :parent_source_id = "IPSL-CM6A-LR" ; :parent_time_units = "days since 1850-01-01 00:00:00" ; :parent_variant_label = "r1i1p1f1" ; :branch_method = "standard" ; :branch_time_in_parent = 21914. ; :branch_time_in_child = 0. ; :physics_index = 1 ; :product = "model-output" ; :realization_index = 1 ; :realm = "aerosol" ; :source = "IPSL-CM6A-LR (2017): atmos: LMDZ (NPv6, N96; 144 x 143 longitude/latitude; 79 levels; top level 40000 m) land: ORCHIDEE (v2.0, Water/Carbon/Energy mode) ocean: NEMO-OPA (eORCA1.3, tripolar primarily 1deg; 362 x 332 longitude/latitude; 75 levels; top grid cell 0-2 m) ocnBgchem: NEMO-PISCES seaIce: NEMO-LIM3" ; :source_id = "IPSL-CM6A-LR" ; :source_type = "AOGCM BGC" ; :sub_experiment_id = "none" ; :sub_experiment = "none" ; :table_id = "AERmon" ; :variable_id = "od550bc" ; :variant_label = "r1i1p1f1" ; :EXPID = "hist-spAer-all" ; :CMIP6_CV_version = "cv=6.2.15.1" ; :dr2xml_md5sum = "b6f602401512e82e2d7cadc2c6f36c2a" ; :model_version = "6.1.10" ; :parent_experiment_id = "piControl" ; :parent_activity_id = "CMIP" ; }