id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
123	No GRAS negative longitudes	Dave Offiler	Dave Offiler	"Sean Healy (ECMWF) has reported that the test GRAS BUFR data contains no occultations in the Western hemisphere (ie no longitude values -180 to 0deg). The BUFR definition for longitude as used for RO is for the range +/-180, so ~50% of GRAS occultations ought to be <0. (A check with COSMIC shows the distributon is as expected).

Martin Sorenesen (DMI) confirms that longitude values for GRAS are in the range 0-360deg and 
values >180 are present in the netCDF files. The ropp2bufr tool should cope with such values, as code is in place to detect >180 and convert it to <0. In a specific case, netCDF longitude is 249.2deg, but is (+)110.8deg in the BUFR.
 
The ROPP I/O code needs to be investigated as to why the longitude value is not being converted to a negative value (the reported sample case would indicate that some conversion is being attempted, but the sign is being lost)."	defect	closed	major	1.1	ropp_io	1.0	fixed	BUFR, longitude