The TPI is defined as the normalized pressure difference between Hobart and Stanley.
The index was first suggested by Pittock (1980,1984) and has been updated and analysed further by Jones et al. (1999).
When using the trans polar index, please cite:
Other references:Filename | Description |
---|---|
Trans Polar Index | |
tpi.dat | for year = 1895 to endyear, format(i5,12f7.2,f8.2) year, 12 * monthly value, annual value. Missing values represented by -9.99 |
Pressure data | |
tpi_hob.dat | Pressure data for Hobart, Australia. Format(2x,i4,1x,i4,a) startyear, endyear, sitename then for year = 1895 to endyear, format(i4,1x,12i6) year, 12 * monthly value Missing values represented by -10, divide by 10 for millibars |
tpi_stan.dat | Pressure data for Stanley, Falklands. Format(2x,i4,1x,i4,a) startyear, endyear, sitename then for year = 1895 to endyear, format(i4,1x,12i6) year, 12 * monthly value Missing values represented by -10, divide by 10 for millibars |
tpi_cappem.dat | Pressure data for Cape Pembroke/Stanley/Mt Pleasant, Falklands - Turney et al. (2015). Format(2x,i4,1x,i4,a) startyear, endyear, sitename then for year = 1895 to endyear, format(i4,1x,12i6) year, 12 * monthly value Missing values represented by -10, divide by 10 for millibars |
These datasets are made available under the Open Database License. Any rights in individual contents of the datasets are licensed under the Database Contents License under the conditions of Attribution and Share-Alike.
Updated: November 2015, Phil Jones