TY - RPRT
AU - E. de Boisséson
AU - Patrick Laloyaux
AU - Magdalena Alonso-Balmaseda
AB - The European Centre for Medium-Range Weather Forecasts (ECMWF) has developed a prototype of ocean-atmosphere coupled assimilation system that will be used for 20th century reanalysis experiments. This system has been run over a two-year period using a century-reanalysis configuration. The ability of the system to capture intraseasonal coupled processes such as Pacific Tropical Instability Waves (TIWs) is evaluated against observations and an atmosphere-only reanalysis. The coupled reanalysis shows to be an improvement over the atmospheric reanalysis as it is able to capture these tropical instabilities with similar characteristics as the observed state except for relatively weak amplitudes. Experiments show that alternative methods to constrain the air-sea interface of the system may improve the representation of the tropical instabilities in the analysis fields.
BT - ERA Report Series
C1 - Research
CY - Shinfield Park, Reading
DA - 02/2015
LA - eng
M1 - 17
N2 - The European Centre for Medium-Range Weather Forecasts (ECMWF) has developed a prototype of ocean-atmosphere coupled assimilation system that will be used for 20th century reanalysis experiments. This system has been run over a two-year period using a century-reanalysis configuration. The ability of the system to capture intraseasonal coupled processes such as Pacific Tropical Instability Waves (TIWs) is evaluated against observations and an atmosphere-only reanalysis. The coupled reanalysis shows to be an improvement over the atmospheric reanalysis as it is able to capture these tropical instabilities with similar characteristics as the observed state except for relatively weak amplitudes. Experiments show that alternative methods to constrain the air-sea interface of the system may improve the representation of the tropical instabilities in the analysis fields.
PB - ECMWF
PP - Shinfield Park, Reading
PY - 2015
EP - 23
T2 - ERA Report Series
T3 - ERA Report
TI - Capturing tropical instability waves in the ECMWF Coupled Reanalysis System
ER -