Climatological data
The NCEP/NCAR Reanalysis data set is a continually updated globally gridded data set that represents the state of the Earth's atmosphere, incorporating observations and numerical weather prediction (NWP) model output from 1948 to present. It is a joint product from the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR). A large subset of this data is available from PSD in its original 4 times daily format and as daily averages. The resolution of the global Reanalysis Model is T62 (209 km) with 28 vertical sigma levels. Results are available at 6 hour intervals. There are over 80 different variables, (including geopotential height, temperature, relative humidity, u- and v- wind components, etc.) in several different coordinate systems, such as 17 pressure level stack on 2.5 by 2.5 degree grids, 28 sigma level stack on 192 by 94 Gaussian grids, and 11 isentropic level stack on 2.5 by 2.5 degree grid.
The calculation of the Sea surface temperature anomaly (OISST) is based on data from the NOAA OI SST V2 High Resolution data set. These are available as daily data since September 1981 on a 0.25 x 0.25 degree grid and were summarized to monthly means analogous to the other map products.
The anomaly was calculated with respect to a long-term mean over the period 1971-2000, which are daily long-term means that have been combined into monthly long-term means and are also available on a 0.25 x 0.25 degree grid.
For more information on the NOAA OI SST V2 High Resolution dataset and the associated reference dataset, please see the following link: NOAA OI SST V2 High Resolution Dataset.
Temperature anomaly (TT925)
Method:
Data:
monthly | 2.5 x 2.5 grid | 17 pressure level | air temperature
January 2002 – actual month
Information:
Sea level pressure anomaly (SLP)
Method:
Observations and numerical weather prediction(NWP)
Data:
monthly | 2.5 x 2.5 grid | 28 sigma level | air pressure at sea level
January 2002 – actual month
Information:
Sea level pressure (SLP) with wind vectors
Method:
Observations and numerical weather prediction(NWP)
Data:
monthly | 2.5 x 2.5 grid | 28 sigma level | air pressure at sea level | u and v wind vectors
January 2002 – actual month
Information:
Sea surface temperature anomaly (OISST)
Method:
Observations and numerical weather prediction(NWP)
Data:
monthly (derived from daily data) | 0.25 x 0.25 grid | sea surface temperature
January 2002 – actual month
Information:
Precipitable water content anomalies (PWC)
Method:
Observations and numerical weather prediction(NWP)
Data:
monthly | 2.5 x 2.5 Grid | precipitable water content
January 2002 – actual month
Information:
For the use of meereisportal.de, users are asked to include the following citation:
- Grosfeld, K.; Treffeisen, R.; Asseng, J.; Bartsch, A.; Bräuer, B.; Fritzsch, B.; Gerdes, R.; Hendricks, S.; Hiller, W.; Heygster, G.; Krumpen, T.; Lemke, P.; Melsheimer, C.; Nicolaus, M.; Ricker, R. and Weigelt, M. (2016), Online sea-ice knowledge and data platform <www.meereisportal.de>, Polarforschung, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research & German Society of Polar Research, 85 (2), 143-155, doi:10.2312/polfor.2016.011 (PDF).
For the use of the specific data from the data portal of meereisportal.de, users are asked to include the associated citations as indicated below.
For all climatological data, please
- include the following phrase into the acknowledgment: Climatologicel data from DATE to DATE were obtained from https://www.meereisportal.de (grant: REKLIM-2013-04).
For all NCEP reanalysis data, users are asked to include the following citation:
- Kalnay, E.; Kanamitsu, E.; Kistler, R.; Collins, W.; Deaven, D.; Gandin, L.; Iredell, M.; Saha, S.; White, G.; Woollen, J.; Zhu, Y.; Chelliah, M.; Ebisuzaki, W.; Higgins, W.; Janowiak, J.; Mo, K. C.; Ropelewski, C.; Wang, J.; Leetmaa, A.; Reynolds, R.; Jenne, R. and Joseph, D. (1996), The NCEP/NCAR 40-Year Reanalysis Project. Bulletin of the American Meteorological Society, 77, 437–471, doi:10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2.
For NOAA OI SST V2 High Resolution Data, users are asked to include the following citations:
- Huang, B., C. Liu, V. Banzon, E. Freeman, G. Graham, B. Hankins, T. Smith, and H.-M. Zhang, 2021: Improvements of the Daily Optimum Interpolation Sea Surface Temperature (DOISST) Version 2.1. J. Climate, 34, 2923-2939, doi:10.1175/JCLI-D-20-0166.1 (V2.1).
- Reynolds, Richard W., Thomas M. Smith, Chunying Liu, Dudley B. Chelton, Kenneth S. Casey, Michael G. Schlax, 2007: Daily High-Resolution-Blended Analyses for Sea Surface Temperature. J. Climate, 20, 5473-5496, doi:10.1175/2007JCLI1824.1.
In case of questions or any difficulties, please contact us at: Meereisportal Team.