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title17-08-2011 CMC

The CMC global ensemble prediction system was upgraded to version 2.0.2 on 17 August 2011.
The main changes included in this upgrade are:

  • The number of members in the ensemble Kalman filter is doubled from 96 to 192.
  • The resolution of the medium-range forecasts is changed from 100 to 66 km.
  • The model top is raised from 10 hPa to 2 hPa.
  • A new dynamical model, with a Charney-Phillips vertical grid, is used.


Further documentation of the operational upgrade can be found at:
http://collaboration.cmc.ec.gc.ca/cmc/CMOI/product_guide/docs/changes_e.html

ECMWF

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title0822-0311-2016 ECMWF

Update of The ECMWF forecast system IFS was upgraded to the version 43r1. A new version of ECMWF model (IFS cycle 41r2) was introduced at ECMWF. 

A major upgrade is in the dynamical ocean model (NEMO):

  • Resolution increase from 1 degree and 42 layers to 0.25 degrees and 75 layers
  • Implementation of interactive sea-ice model (LIM2)
  • Ocean and sea-ice components of the ENS initial conditions provided by new ocean analysis and reanalysis suite ORAS5

Click  here for full details.

Info
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title08-03-2016 ECMWF

The ECMWF forecast system IFS was upgraded to the version 41r2.

The main changes included in this upgrade

The main consequences for ECMWF-TIGGE data are

:

  • Introduction of a new form of the reduced Gaussian grid, the octahedralgrid, for HRES, ENS and ENS Extended;
  • Horizontal resolution of the HRES increased from TL1279 / N640 to TCO1279 / O1280, where subscript C stands for cubic and O for octahedral;
  • Horizontal resolution of the ENS increased from TL639 / N320 to TCO639 / O640 for ENS (Days 0 - 15) and from TL319 / N160 to TCO319 / O320  for ENS Extended (Days 16 - 46);
  • For the medium-range ENS there will no longer be a decrease of resolution at day 10: the ENS Days 11 - 15 will be run at the same TCO639 / O640 resolution as ENS Days 0 - 10;

Click  here for full details.

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