discrep: Discrepancy maps for September 1993-2007 (lead time...

In IceCast: Apply Statistical Post-Processing to Improve Sea Ice Predictions

Description

The object discrep is obtained from running the createMapping function for September 1993-2007. The predictions used are from European Center for Medium-Range Weather Forecasts (ECMWF) at a 2.5-month lead time and are converted to a Polar Stereographic grid. Model output is available from the Sea Ice Prediction Network Predicatability Portal or the Copernicus Climate Change Service data store. The observations used are from the monthly sea ice concentration obtained fromthe National Aeronautics and Space Administration (NASA) satellites Nimbus-7 SMMR and DMSP SSM/I-SSMIS and processed by the bootstrap algorithm. The results are distributed by the National Snow and Ice Data Center (Comiso 2017).

Usage

discrep

Format

Object obtained from the createMapping function (see details)

Details

The object discrep is obtained from running the createMapping function. It is a list of four objects where startYear and endYear give the first year and last year that were mapped. The variables obsList and predList are lists of arrays with one 3-dimensional array for each region. The first dimension is for the year. The other two dimensions are for the fixed points' y-coordinates, the mapped points' x-coordinates, the mapped points' y-coordinates, the length of the mapping vectors in the x-direction, the length of the vectors in the y-direction, and the angles of the mapping vectors.

References

Comiso, J., 2017: Bootstrap sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS. version 3. Boulder, Colorado USA: NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/7Q8HCCWS4I0R

Copernicus Climate Change Service (2019). Description of the c3s seasonal multi-system.https://confluence.ecmwf.int/display/COPSRV/Description+of+the+C3S+seasonal+multi-system

Sea Ice Prediction Network (2019). Sea ice prediction network predictability portal. https://atmos.uw.edu/sipn/.

Examples

data(discrep)
names(discrep)

IceCast documentation built on June 24, 2019, 9:03 a.m.