---
activity_duration: 9 hours and 30 minutes
computing_environment: Linux (CentOS release 6.4)
data_usage: ~
dataset_variables: ~
duration: 9 hours and 30 minutes
end_time: 2070-12-31T00:00:00
href: https://data.globalchange.gov/activity/noaa-led-state-summaries-2017-projected-change-in-annual-precipitation-ri-process.yaml
identifier: noaa-led-state-summaries-2017-projected-change-in-annual-precipitation-ri-process
interim_artifacts: 'rcp85-pcp-mam-ave.txt,CMIP_SeasonalComparison_Precip_2041_2070_US_V5.jpg,CMIP_Fig32A_v4.png,Figure32a_CMIP_Seasonal_Precip_2041_2070_CONUS.mpk'
methodologies: []
methodology: '1. For each model at each grid point, the mean annual precipitation under the RCP8.5 scenario was calculated.<br/>2. For each model, these data were re-gridded to a common grid.<br/>3. For each model at each grid point, the mean annual precipitation under the RCP8.5 scenario was calculated for two periods: 1971-2000 and 2041-2070.<br/>4. At each grid point, the difference in projected annual precipitation was calculated for 2041-2070 minus 1971-2000.<br/>5. At each grid point, the mean spring precipitation difference was computed by averaging the following models:<br/>BCC-CSM1.1, CCSM4, CSIRO-Mk3-6-0, FIO-ESM, GFDL-CM3, GFDL-ESM2G, GFDL-ESM2M, GISS-E2-R, HadGEM2-A0, HadGEM2-ES, IPSL-CM5B-LR, IPSL-CM5A-LR, MIROC5, MIROC-ESM-CHEM, MIROC-ESM, MRI-CGCM3.<br/>6. Data were plotted for grid points in the contiguous United States with model agreement indicated as follows:<br/>Category 1: If less than 50% of the models indicate a statistically significant change then the multi-model mean is shown in color;<br/>Category 2: If more than 50% of the models indicate a statistically significant change but less than 67% of the significant models agree on the sign of the change, then the grid points are masked out;<br/>Category 3: If more than 50% of the models indicate a statistically significant change and more than 67% of the significant models agree on the sign of the change, then the multimodel mean is shown in color with hatching.'
methodology_citation: ~
methodology_contact: 'Liqiang Sun, North Carolina State University'
modified_source_location: ~
notes: |-
  undefinedWorld Climate Research Program's (WCRP) Coupled Model Intercomparison Project Phase 5 (CMIP5) multi-model ensemble http://cmip-pcmdi.llnl.gov/cmip5/data_portal.html
  
   image: 184d25ba-d840-4367-a1ee-9725eb5dd3fc
output_artifacts: CICS computer cluster /snfs4/assessment/state summaries
publication_maps:
  - activity_identifier: noaa-led-state-summaries-2017-projected-change-in-annual-precipitation-ri-process
    child: 33317
    child_uri: /publication/33317
    note: ''
    parent: 14599
    parent_uri: /publication/14599
    relationship: prov:wasDerivedFrom
software: 'Fortran 95,f95 compiler,GrADS,ArcGIS'
source_access_date: ~
source_modifications: ~
spatial_extent: '{"type":"Feature","properties":{},"geometry":{"type":"MultiPolygon","coordinates":[[[[-124.8,24.5],[-66.95,24.5],[-66.95,49.38],[-124.8,49.38],[-124.8,24.5]]]]},"bbox":[-124.8,24.5,-66.95,49.38]}'
start_time: 1971-01-01T00:00:00
uri: /activity/noaa-led-state-summaries-2017-projected-change-in-annual-precipitation-ri-process
visualization_methodology: 'Multi-model mean CMIP5 (RCP8.5 scenario) annual precipitation projections were plotted for the contiguous United States, for 2041-2070 relative to 1971-2000.'
visualization_software: ArcGIS