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2015

21-10-2015 Met Office CXML data

From the 06UTC forecast on 21st October 2015, the Met Office tropical cyclone prediction (CXML) data is now based on the higher-resolution MOGREPS-G forecasts. MOGREPS-G is run four times a day (00, 06, 12 and 18Z) using a 12-member ensemble with a grid length of approx 33km. Until now, the CXML data was based on the lower resolution MOGREPS-15 ensemble, even though MOGREPS-G data has been supplied to the TIGGE archive since July 2014. The CXML data are available via the NCAR archive at  http://rda.ucar.edu/datasets/ds330.3/ or see the TIGGE cyclone exchange page at http://cawcr.gov.au/projects/THORPEX/TC/index.html for further information.

2014

06-11-2014 Met Office TIGGE data - update

The Met Office TIGGE data now includes data from the higher resolution, 7-day MOGREPS-G global ensemble (rather than MOGREPS-15, as used up to 00Z 15th July). The new data are being provided in near-real time from 00Z 6th November, and it is planned to back-fill the gap in due course. The new ensemble data includes 12 members run four times a day, with a reduced number of parameters. See attachment below for more details.

Met Office TIGGE news - November 2014

15-07-2014 TIGGE data from UK Met Office

From Tuesday 15th July, the 15-day MOGREPS-15 EPS data will no longer be sent to TIGGE. It will be replaced by higher resolution MOGREPS-G data, with a 7-day range. There will be a gap in the data provision, but it is planned to back-fill the missing data within a few weeks. The number of TIGGE parameters available from the new MOGREPS-G feed will be significantly reduced. See attached file for more details.

Met Office TIGGE news - July 2014

28-04-2014 Correction of NCEP energy flux data

A recent review of the NCEP TIGGE data has shown that there were errors in the five time-integrated energy flux fields: outgoing long wave radiation, surface latent heat flux, surface net thermal radiation, top net solar radiation and surface sensible heat flux. The data have been corrected from 9th April 2014, but unfortunately it is not feasible to correct past data. Thanks to NCDC, who post-process twelve of the NCEP TIGGE parameters, for indentifying and correcting the problem. For furthe ... more

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2011

17-08-2011 CMC - model upgrade

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

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