netcdf C6_5385471_1_11779943770357030959 { dimensions: time = UNLIMITED ; // (72 currently) lat = 96 ; lon = 192 ; bnds = 2 ; variables: double time(time) ; time:bounds = "time_bnds" ; time:units = "days since 1850-1-1 00:00:00" ; time:calendar = "proleptic_gregorian" ; time:axis = "T" ; time:long_name = "time" ; time:standard_name = "time" ; double time_bnds(time, bnds) ; double lat(lat) ; lat:bounds = "lat_bnds" ; lat:units = "degrees_north" ; lat:axis = "Y" ; lat:long_name = "Latitude" ; lat:standard_name = "latitude" ; double lat_bnds(lat, bnds) ; double lon(lon) ; lon:bounds = "lon_bnds" ; lon:units = "degrees_east" ; lon:axis = "X" ; lon:long_name = "Longitude" ; lon:standard_name = "longitude" ; double lon_bnds(lon, bnds) ; float npp(time, lat, lon) ; npp:standard_name = "net_primary_productivity_of_biomass_expressed_as_carbon" ; npp:long_name = "Net Primary Production on Land as Carbon Mass Flux [kgC m-2 s-1]" ; npp:comment = "\'Production of carbon\' means the production of biomass expressed as the mass of carbon which it contains. Net primary production is the excess of gross primary production (rate of synthesis of biomass from inorganic precursors) by autotrophs (\'producers\'), for example, photosynthesis in plants or phytoplankton, over the rate at which the autotrophs themselves respire some of this biomass. \'Productivity\' means production per unit area. The phrase \'expressed_as\' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A." ; npp:units = "kg m-2 s-1" ; npp:original_name = "npp" ; npp:cell_methods = "area: mean where land time: mean" ; npp:cell_measures = "area: areacella" ; npp:history = "2026-08-07T07:42:31Z altered by CMOR: replaced missing value flag (-9e+33) and corresponding data with standard missing value (1e+20). 2026-08-07T07:42:31Z altered by CMOR: Inverted axis: lat." ; npp:missing_value = 1.e+20f ; npp:_FillValue = 1.e+20f ; // global attributes: :CDO = "Climate Data Operators version 2.2.0 (https://mpimet.mpg.de/cdo)" ; :Conventions = "CF-1.7 CMIP-6.2" ; :activity_id = "DAMIP" ; :branch_method = "standard" ; :branch_time_in_child = 0. ; :branch_time_in_parent = 27393. ; :contact = "
" ; :creation_date = "2026-08-07T07:42:31Z" ; :data_specs_version = "01.00.31" ; :experiment = "historical well-mixed GHG-only run" ; :experiment_id = "hist-GHG" ; :external_variables = "areacella" ; :forcing_index = 1 ; :frequency = "mon" ; :further_info_url = "https://furtherinfo.es-doc.org/CMIP6.MPI-M.MPI-ESM1-2-LR.hist-GHG.none.r22i1p1f1" ; :grid = "gn" ; :grid_label = "gn" ; :history = "2026-08-07T07:42:31Z ; CMOR rewrote data to be consistent with CMIP6, CF-1.7 CMIP-6.2 and CF standards." ; :initialization_index = 1 ; :institution = "Max Planck Institute for Meteorology, Hamburg 20146, Germany" ; :institution_id = "MPI-M" ; :mip_era = "CMIP6" ; :nominal_resolution = "250 km" ; :parent_activity_id = "CMIP" ; :parent_experiment_id = "piControl" ; :parent_mip_era = "CMIP6" ; :parent_source_id = "MPI-ESM1-2-LR" ; :parent_time_units = "days since 1850-1-1 00:00:00" ; :parent_variant_label = "r1i1p1f1" ; :physics_index = 1 ; :product = "model-output" ; :project_id = "CMIP6" ; :realization_index = 22 ; :realm = "land" ; :references = "MPI-ESM: Mauritsen, T. et al. (2019), Developments in the MPI‐M Earth System Model version 1.2 (MPI‐ESM1.2) and Its Response to Increasing CO2, J. Adv. Model. Earth Syst.,11, 998-1038, doi:10.1029/2018MS001400,\n", "Mueller, W.A. et al. (2018): A high‐resolution version of the Max Planck Institute Earth System Model MPI‐ESM1.2‐HR. J. Adv. Model. EarthSyst.,10,1383–1413, doi:10.1029/2017MS001217" ; :source = "MPI-ESM1.2-LR (2017): \n", "aerosol: none, prescribed MACv2-SP\n", "atmos: ECHAM6.3 (spectral T63; 192 x 96 longitude/latitude; 47 levels; top level 0.01 hPa)\n", "atmosChem: none\n", "land: JSBACH3.20\n", "landIce: none/prescribed\n", "ocean: MPIOM1.63 (bipolar GR1.5, approximately 1.5deg; 256 x 220 longitude/latitude; 40 levels; top grid cell 0-12 m)\n", "ocnBgchem: HAMOCC6\n", "seaIce: unnamed (thermodynamic (Semtner zero-layer) dynamic (Hibler 79) sea ice model)" ; :source_id = "MPI-ESM1-2-LR" ; :source_type = "AOGCM BGC" ; :sub_experiment = "none" ; :sub_experiment_id = "none" ; :table_id = "Lmon" ; :table_info = "Creation Date:(24 July 2019) MD5:816c2357f2fe98074c65bf22f7c9374e" ; :title = "MPI-ESM1-2-LR output prepared for CMIP6" ; :variable_id = "npp" ; :variant_label = "r22i1p1f1" ; :license = "CMIP6 model data produced by MPI-M 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) and. 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." ; :cmor_version = "3.6.0" ; :tracking_id = "hdl:21.14100/13167439-fb1c-4eb3-ab31-cf369e362f30" ; }