In March 2007, the International Council for Science (ICSU) and the World Meteorological Organisation (WMO) launched the International Polar Year (IPY). It ended in March 2009 to encompass full year cycles in the Arctic and the Antarctic.
SPARC was actively involved in the IPY programme with its project: The structure and evolution of the stratospheric polar vortices during IPY and its links to the troposphere.
One of the key outcomes was the collection of analysis products from several operational centres and several research centres, archived here. Further information on the SPARC involvement in the IPY programme can be found here.
| Source | Period | Format | Parameters |
|---|---|---|---|
| NCEP | 2007/03 – 2009/05 | GRIB format 1152×576 (0.3125°x0.3125°) 64 levels 00h, 06h, 12h, 18h |
u, v, temp, specific humidity, ozone, cloud water, pressure |
| UKMO | 2007/03 – 2009/05 | NetCDF format 640×481 (0.5625°x0.375°) 27 levels 12Z: |
u, v, temp, geopotential height, dz/dt Standard data assimilation and data assimilation with uars included |
| GMAO | 2007/01 – 2009/06 | HDF format 540×361 (0.667°x0.5°) 72 levels 00h, 06h, 12h, 18h |
temperature, u, v, geopotential height, potential, vorticity, divergence, surface pressure, pressure thickness, temperature tendency, relative humidity, cloud ice water mixing ratio, cloud liquid water mixing ratio, total cloud fraction, optical thickness of all clouds, ozone |
| ECMWF | 2007/06 – 2009/06 | GRIB format 1440×721 (0.25°x0.25°) 91 levels 00h, 06h, 12h, 18h |
u, v, temp, divergence, ozone, cloud cover, q, cloud ice water content, cloud liquid water content |
| CMAM FDAM |
2007/03 – 2009/03 | NetCDF format 3.75°x3.75° 71 levels 00h, 06h, 12h, 18h |
u, v, temp, sea level pressure, Ox, ozone, NOx, ClOx, BrOx, HNO3, methane, NO, NO2, NO3, N2O5, ClO, ClONO2, BrO, specific humidity, H2O |
| GEM-BACH | 2007/03 – 2009/02 | NetCDF format 240×120 (1.5°x1.5°) 80 levels 00h, 06h, 12h, 18hh |
Zonal, meridional winds [m/s]: U, V Temperature [K]: TEMP Geopotential [m2/s2]: PHI ln(surface pressure) [ln(hPa)]: LNSP Specific humidity [kg/kg]: SHUM Species [vmr]: CH4 CO ClO ClONO2 HCl HF HNO3 HOCl N2O N2O5 NO NO2 NO3 O3 |
SPARC International Polar Year data are freely available for non-commercial purposes at ftp://sparc-ftp.ceda.ac.uk/sparc/ipy/.