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Greenland Blocking Index (GBI)

GBI is the mean 500 hPa geopotential height for the 60-80°N, 20-80°W region. It measures blocking over Greenland which impacts both climate and weather in the Northern Hemisphere.

Time Interval: Monthly
Time Coverage: 1851 to present
Update Status: updated irregularly

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GBI: Standard PSL Format ( What is standard format?)
Time Interval: Daily
Time Coverage: 1948 to present
Update Status: updated irregularly

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GBI:

Source:
Monthly data is from U of Lincoln using the 20CRV2c and the NCEP Reanalysis I datasets. The two dataset time-series were merged using the procedure described in their paper.
Daily data is from the NCEP/NCAR Reanalysis.

References:

  1. Hanna, E., T.E. Cropper, R.J. Hall, and J. Cappelen (2016) Greenland Blocking Index 1851-2015: a regional climate change signal. International Journal of Climatology, DOI: 10.1002/joc.4673.
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