This is the twenty-fourth ECMWF-users' newsletter.  To get copies of previous
newsletters, use anonymous FTP to ncardata.ucar.edu [128.117.8.111] and
change directory to datasets/ds111.2/news.  Or, use a WWW browser and open 
http://www.ucar.edu/dss/datasets/ds111.2.html and select "news".

			5 August 1996

CONTENTS:

	o Basic Consolidated Dataset (ds111.2) updated through June 1996
	o Change in data format beginning April 1996;  new software required
	o Year-month means dataset (ds111.5) updated through June 1996

============================================================================

	Basic Consolidated Dataset (ds111.2) update

The Basic Consolidated Dataset (ds111.2) has been updated with the April -
June 1996 data.  The new volumes are:
	Y31801         1996APR
	Y31802         1996MAY
	Y31803         1996JUN
You can obtain the listing of all volume serial numbers in this dataset
from the file datasets/ds111.2/MASTER, via anonymous FTP to ncardata.ucar.edu.
Or, use a WWW browser and open http://www.ucar.edu/dss/datasets/ds111.2.html
This file is also on the Mass Store under the name /DSS/D/DS1112.

============================================================================

	Change in data format

A few more slight changes to the data format (in particular, new extended
PDS values and new legal values for other header items) have necessitated
another update to the software.  If you are using the data on the NCAR
Crays, the MSS files have been updated.  If you are using the data on
your own computer, please retrieve the new subroutines from the ftp
machine ncardata.ucar.edu in the /datasets/ds111.2/software directory.
You will need a new copy of gribsubs.f as well as a new copy of the 
appropriate machine-specific code (either subs_cray.f, subs_sun.f, or 
subs_vax.f).

The changes described in the previous bulletin still hold:

1) Beginning with the March 1996 data, the record length is increased
from 10560 to 10680 bytes.

2) You must increase the length of several arrays in your main program.
If you call GRIBEX with this calling sequence:

	call gribex (ksec0, ksec1, ksec2, psec2, ksec3, psec3, 
     &               ksec4, f, jpflen, igrib, jpglen, idum, hoper, ierr)

then the following arrays must be redimensioned:

	ksec1(60)	[increased from 25]
	ksec2(384)	[increased from 23]
	psec2(96)	[increased from 10]

============================================================================

	Year-month means dataset (ds111.5) update

Monthly mean values have been computed for the first half of 1996 and
added to the ds111.5 dataset.  The 0Z means are in /DSS/Y31804 and the
12Z means are in /DSS/Y31805.  You can obtain the complete listing of the 
volume serial numbers containing the data via anonymous FTP to 
ncardata.ucar.edu in the file datasets/ds111.5/MASTER, or use WWW and open
http://www.ucar.edu/dss/datasets/ds111.5.html  This file is also on the Mass 
Store under the name /DSS/D/DS1115.

The new files are written in the new ECMWF format, i.e. the record 
length is 10680 bytes.  This is because the decoding software is also
used to encode GRIB data.

============================================================================

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If you are interested in ordering any ECMWF/TOGA data, or any other data
from NCAR's archives, please contact me.  I can be reached at
ilana@ncar.ucar.edu or by phone at (303)497-1214.

Ilana Stern
Data Support Section
National Center for Atmospheric Research