The final report can be downloaded here (if you experience problems when printing the file, try to do it from a computer with Windows operating system).

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The third annual report can be downloaded here.

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In order to provide ERA-40 data for the initialization of the coupled model integrations before the re-analysis is completed, the ERA40 group suggests to use the following experiments:

January 1958 - April 1972: expver 20

November 1972 - December 1984: expver 30

January 1985 - December 1985: expver 50

January 1986 - December 1988: expver 40

January 1989 - December 2001: expver 18

Note that there is an almost continuous dataset already available. For the missing data for the period May 1972 to October 1972 you can use expver 334.

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When using GRIB files on ecgate1, you can make use of the following tools to get some information about the content of the file without being forced to decode the content:
~emos/bin/sgimips/GRIB_profile file_name: provides a summary of the fields contained in file_name

~emos/bin/sgimips/pgrib file_name: gives a full description of the fields contained in file_name, including all the data. A redirected output is recommended.

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The second annual report can be downloaded here.

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The first annual report can be downloaded here.

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On 19th October 2000, a new ERA-40 project meeting has been held at ECMWF. The program has been mostly focused on the validation of the first data available (expver 0012) for 1986-87. ECMWF gave a brief talk for explaining what is DEMETER and showing the impact of the ERA-15 and ERA-40 fluxes on the ocean analysis computed with the version of HOPE used at ECMWF. Some information provided during the meeting seems interesting for the DEMETER partners:

At the present time the latest data available are close to the end of November 1987. These data correspond to the experiment called expver 0012 and are a preliminary version of the final data. As you should know, this experiment started on the 1st September 1986. However, the ERA group is planning to redo the computations including some mods. They will do it in a short time and will start the 1st March 1987. Thus, our forecasts can start, as the earliest, in November 1986. However, we have to take into account that there will be a jump in March 1987.

The expver 0012 data available (as well as those for the year 1988) are part of the stream 3 (see scheduling), so that they will be recomputed later at the end of the ERA project. This means that the forecasts that we will carry out at the beginning of DEMETER (at least up to 1988) would have to be repeated when having the final version of the ERA-40 data. The implications for us in the short time is that the archiving of the GRIB files should be done with a flag allowing the distinction between the forecasts carried out now for the years 1987 and 1988, and the ones that, eventually, will be carried out at the end of the project.

ERA-40 seems to be better than ERA-15. Many more data have been included in the production, mainly from satellite and rawinsonde sources. However, many drawbacks still remain. For instance, surface fields have to be handled carefully in some regions. Furthermore, it seems to be some shortcomings with the radiative properties of the clouds, which is producing some errors in the radiative fluxes not appearing in the clear-sky fluxes.

It is possible that some minutes of the meeting will be produced. We will ask for a general distribution including the DEMETER partners.

The ERA website is at this time accessible just for the ECMWF internal users and the Member States (https://www.ecmwf.int/research/era/index.html). This website offers information about the project, the scheduling, and a very useful monitoring of the status of the integrations. Saki Uppala confirmed that the website will be visible for everyone in a short time (some weeks?).

Please, find follow this link to find a postscript file with the slide on the ERA-40 status that was shown by ECMWF at the Toulouse meeting.

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An evaluation of the load of the ECMWF system due to the execution of the different DEMETER work packages at the centre has been carried out. You can download the postscript file here.

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ERA-40 is running the new re-analyses. An update of the state of the dataset can be found here.
The following use of experiments has been recommended for DEMETER

September 1986 - October 1988 Experiment 0012

November 1988 - December 1988 Experiment 0017

January 1989 onward Experiment 0018

Some useful additional information about the performance of ERA-40 and the different experiment identifiers considered by the ERA-40 participants as the most convenient may be found here. For more detailed information, you might check periodically the availability of the data using the MARS browser.

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GRIB will be the standard data format used in DEMETER. Following this link you will find an example program (in FORTRAN77) for reading this kind of files. You will always need the GRIB libraries for reading the data files (the example provided here being just the main program). For getting the libraries, please contact Tim Palmer. He will put you in contact with Keith Fielding and an application will be provided to you. Please, note that this software is only being supplied for use within the DEMETER project and all copies should be destroyed at the end of the project.
Modelling and downscaling partners will have access to all of the GRIB tools available at ECMWF. Remember that modelling partners should provide the results corresponding to the common variables in a common GRIB format ready for archiving in MARS.

17.12.2003