Years of Record: 1869/12 to 2021/02
The Atlantic Multi-decadal Oscillation (AMO) has been identified as a coherent mode of natural variability occurring in the North Atlantic Ocean with an estimated period of 60-80 years. It is based upon the average anomalies of sea surface temperatures (SST) in the North Atlantic basin, typically...
Main variables and Earth System components:
Formats: netCDF | ascii
Timestep: Monthly,Decadal
Domain: Atlantic Ocean, NH - Northern Hemisphere
See Expert Guidance by Trenberth, Kevin | See Expert Guidance by Zhang, Rong
Years of Record: 1898/12 to 2021/08
NCAR Sea Level Pressure is a gridded analysis of SLP based on land station reports, covering 1899 to present for latitudes 30°N-90°N. Quality controlled raw data plus empirical corrections for changes in instrumentation and station location.
Main variables and Earth System components:
Formats: netCDF | ascii | binary
Domain: NH - Northern Hemisphere
See Expert Guidance by Hurrell, James | See Expert Guidance by Trenberth, Kevin
Years of Record: 1869/12 to 2018/09
There are several indices used to monitor the tropical Pacific, all of which are based on SST anomalies averaged across a given region. Usually the anomalies are computed relative to a base period of 30 years. The Niño 3.4 index and the Oceanic Niño Index (ONI) are the most...
Main variables and Earth System components:
Timestep: Monthly
Domain: Pacific Ocean, Tropics
See Expert Guidance by Trenberth, Kevin
Years of Record: 1899/12 to 2015/11
The Pacific Decadal Oscillation (PDO) is defined by the leading pattern (EOF) of sea surface temperature (SST) anomalies in the North Pacific basin (typically, polewards of 20°N). The SST anomalies are obtained by removing both the climatological annual cycle and the global-mean SST anomaly...
Main variables and Earth System components:
Formats: ascii
Timestep: Monthly
Domain: Pacific Ocean
See Expert Guidance by Deser, Clara | See Expert Guidance by Trenberth, Kevin
Years of Record: 1865/12 to 2019/12
The Southern Oscillation Index (SOI) is a time series used to characterize the large scale sea level pressure (SLP) patterns in the tropical Pacific. Monthly mean SLP at Tahiti [T] and Darwin [D] are used. An optimal SOI can be constructed. It consists of [T-D] which is a measure of the large...
Main variables and Earth System components:
Formats: netCDF | ascii
Timestep: Monthly
Domain: Australia, Pacific Ocean, Tropics
See Expert Guidance by Trenberth, Kevin
