---
activity_duration: 2 hours
computing_environment: Mac OS Catalina
data_usage: ~
dataset_variables: ~
duration: 2 hours
end_time: 2019-12-31T00:00:00
href: https://data.globalchange.gov/activity/indicator-sea-surface-temperatures-panel-3-process-2020.yaml
identifier: indicator-sea-surface-temperatures-panel-3-process-2020
interim_artifacts: 'aravg.ann.ocean.30S.00N.v5.0.0.202003.asc,sea_surface_temp_04_22_20.xlsx'
methodologies: []
methodology: '* The average temperature for the baseline period of 1901-2000 was calculated.<br/>* The 1901-2000 temperature anomaly was subtracted from the temperature anomaly for each year to produce a new time series of temperature anomalies. The period of 1901-2000 was chosen because it is easily recognizable and fixed in time. It should be noted that the choice of baseline period will not affect the shape or the statistical significance of the overall trend in anomalies, it only moves the trend up or down on the graph in relation to the point defined as “zero.”<br/>* The time series of temperature anomalies was converted to degrees Fahrenheit.'
methodology_citation: ~
methodology_contact: 'Boyin Huang, NOAA NCEI'
modified_source_location: ~
notes: "NOAA NCEI, cited 2020: Climate at a Glance: Global Time Series, NOAA National Centers for Environmental Information. [Available online at https://www.ncdc.noaa.gov/cag/time-series/global/globe/ocean/ytd/12/1880-2019]\r\n image: 5b6d1e1a-66a0-44aa-bb76-021ad57b2bb2"
output_artifacts: annual_sea_surface_temps_052520.png
publication_maps:
  - activity_identifier: indicator-sea-surface-temperatures-panel-3-process-2020
    child: 33516
    child_uri: /publication/33516
    note: ''
    parent: 19212
    parent_uri: /publication/19212
    relationship: prov:wasDerivedFrom
  - activity_identifier: indicator-sea-surface-temperatures-panel-3-process-2020
    child: 33547
    child_uri: /publication/33547
    note: ''
    parent: 19212
    parent_uri: /publication/19212
    relationship: prov:wasDerivedFrom
software: Microsoft Excel
source_access_date: ~
source_modifications: 'Global average annual sea surface temperature data were downloaded (in degrees Kelvin) from https://www.ncdc.noaa.gov/data-access/marineocean-data/extended-reconstructed-sea-surface-temperature-ersst (filename: aravg.ann.ocean.30S.00N). The 2020 update uses the newest version of ERSST (version 5). These data are temperature anomalies relative to 1971 to 2000.'
spatial_extent: '{"type":"Feature","properties":{},"geometry":{"type":"MultiPolygon","coordinates":[[[[-180,-30],[180,-30],[180,0],[-180,0],[-180,-30]]]]},"bbox":[-180,-30,180,0]}'
start_time: 1880-01-01T00:00:00
uri: /activity/indicator-sea-surface-temperatures-panel-3-process-2020
visualization_methodology: "* Values were plotted as bars for each year, colored red for above average temperatures and blue for below average temperatures\r\n* The baseline was labeled as \"1901-2000 average\" and labels indicating warmer or cooler temperatures were added to the y-axis\r\n* A map indicating the 30S-0 region of the globe was added next to the plot"
visualization_software: 'SigmaPlot,Adobe Photoshop'