Sea-level pressure data for Ponta Delgada, Azores (AZO SLP) Monthly Time-series
Describes a majo mode of variability in the Northern Hemisphere
- The NAO mode is a mjor mode of variability in the northern hemisphere. The Azores SLP timeseries is used by CRU to calculate the NAO.
Temporal Coverage
- Monthly values: 1821/01 to 2021/12
- Update Status: Irregular
Data Notes
- Units: mb
- Missing data value: -99.0
Time-series List
- AZO SLP: Standard PSL Format, CSV, NetCDF (What is standard format?)
Usage Restrictions
- None
Caveats
- None. But note that there are different defintions of the NAO and some wil differ significantly seasonally.
Related Time-series
- North Atlantic Oscillation (NAO) from CRU (NAO) Monthly Time-series
- SLP timeseries from Gibralter used for the NAO from CRU (SLP GIB) Monthly Time-series
- SLP timeseries from Iceland used for the NAO from CRU (SLP ICE) Monthly Time-series
Links
- https://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/nao.shtml
- https://www.ncdc.noaa.gov/teleconnections/nao/
Analysis pages
Original Source
- Index is calculated at the CRU.
Time-series source dataset(s)
- SLP values are from Input data for the NAO calculation is station based SLP datastation data measurements.
References
- Jones, P.D., Jónsson, T. and Wheeler, D., 1997: Extension to the North Atlantic Oscillation using early instrumental pressure observations from Gibraltar and South-West Iceland. Int. J. Climatol. 17, 1433-1450. doi: 10.1002/(SICI)1097-0088(19971115)17:13<1433::AID-JOC203>3.0.CO;2-P