DM 01-03.10 GOES BUFR HIGH DENSITY WIND PRODUCTS

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: DM 01-03.10 GOES BUFR HIGH DENSITY WIND PRODUCTS
• From: Walter Smith <walter.smith@xxxxxxxx>
• Date: Thursday, January 23, 2003 3:08 PM -0500

more information on high density wind products

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2003/01/23
DM 01-03.10 GOES BUFR HIGH DENSITY WIND PRODUCTS
NOXX10KWBC 231536
DATA MGT MESSAGE 01-03.10


TO AWIPS/NOAAPORT USERS...FAMILY OF SERVICES/FOS/SUBSCRIBERS...
EMERGENCY MANAGERS WEATHER INFORMATION NETWORK/EMWIN/
NATIONAL WEATHER SERVICE/NWS/CUSTOMERS...WAFS USERS...GTS USERS..
NWS FAX CHART USERS.

FROM RTH WASHINGTON DATA MANAGEMENT

DRGAB117 EFFECTIVE IMMEDIATELY THE FOLLOWING GOES BUFR HIGH
DENSITY WIND PRODUCTS WILL BE ADDED TO THE AWIPS/NOAAPORT
DATASTREAM.

BRIAN GOCKEL (301)713-0304 EXTENSION 158, IS THE COGNIZANT
TECHNICAL INDIVIDUAL. ANTHONY ROBINSON (301)713-1373
EXTENSION 165, IS THE DRG FOCAL POINT FOR THIS ITEM.

WMO HEADING

JACXi1i2 KNES
JCCXi1i2 KNES
JECXi1i2 KNES
JGCXi1i2 KNES
JHCXi1i2 KNES
JJCXi1i2 KNES
JKCXi1i2 KNES
JMCXi1i2 KNES
JNCXi1i2 KNES
JPCXi1i2 KNES

Notes:

1. In column 5 (WMO Header):

 a. There are five types of GOES winds products being added.  Each type

 has been assigned a unique header depending upon whether it is based
on
 GOES East or GOES West data.    Each T2 value (i.e., A, C, E, G, H, J,

 K, M, N, and P) refers to a specific type of wind product.  See Part A

 (field 12, above) or see the attached PRS, section 1.4, table 1, "WMO
 Header" row for details.

 b. i1=0 (area 10), 1(area 1), 2(area 2), 3 (area 3), ..., 9 (area 9).
 The domains of the ten geographical areas are described in PRS
 (section1.4, table 1).

 c. i2=0-9, where a value of 1 corresponds to the first message, 2 to
the
 second message, etc, as needed when multiple messages are sent for the

 same time period.

 d. The third field of the WMO header (i.e., the YYGGg1g2 field, which
is
 not shown above) includes the day-of-month, hour, and minute of
product
 generation, as described in the PRS, Section 1.4, table 1.

 e. When numerous messages from the same satellite, geographical region

 and time period occur, they might be disseminated as a series of
 bundles, with each bundle having the same TTAAii CCCC YYGGgg WMO
header
 but a unique B3 assignment in the WMO B1B2B3 field (not shown above).
 This B1B2B3 field is optional and, when it is used, it follows the
YYGGgg
 portion of the WMO header.  When such sequencing is used, the
following
 convention is employed:
      Message  1 - no BBB field
      Message  2 - B1B2B3 = RRA
      Message  3 - B1B2B3 = RRB
         ...          ...     ...
      Message 25 - B1B2B3 = RRX

 Only as many messages as needed (<=25) will be used.

2. In column 8 (Character per message):

 a. The data volumes shown are estimates based on the attached PRS.
 Actual data volumes vary considerably due to weather conditions and
 depending upon time of day (for reasons described in note 3a, below).
 A sample of 3 days (Nov 3-5, 2002) indicated three-hourly volumes in
the
 1.0-2.5MBytes range.

 b. The data volumes correspond to the full distribution during the
 three-hourly period shown in column 9.  Individual BUFR messages will
be
 much smaller (<12Kbytes).

3. In column 9 (Frequency):

 a. The visible imager products (i.e., JHCXi1i2 KNES and JJCXi1i2 KNES)

 are suspended at night.  This nocturnal suspension is imposed because,

 in the absence of sunlight, the western hemisphere's illumination is
 insufficient for the estimation of high-quality visible-based winds.
 Therefore, for GOES East, few visible products will be disseminated
 between roughly 5UTC and 11UTC.  For GOES West, few visible products
 will be disseminated between roughly 7UTC and 13UTC.

 b. While the bulk of the imager products (i.e., JACXi1i2 KNES through
 JJCXi1i2 KNES) are sent on a three-hourly basis, there are much
smaller
 distributions of imager products at some intermediate times.  These
 smaller distributions correspond to regional southern hemispheric
scans
 of the GOES imager.  The out-of-phase timing is partly due to the
timing
 of the southern hemisphere imager scans and partly due to product-
 generation load balancing at NESDIS.




FOR FOS/NOAAPORT AND NON-AWIPS CUSTOMERS- IF YOU HAVE ANY
QUESTIONS REGARDING ROUTING OR WOULD LIKE TO ADD THESE PRODUCTS
TO YOUR DATASTREAM PLEASE CONTACT DATA MANAGEMENT.

EMAIL nws.dm@xxxxxxxx

THIS INFORMATION IS ALSO POSTED ON THE NWS DATA MANAGEMENT
WEB PAGE UNDER CHANGE NOTICES. THE URL IS LISTED BELOW.


http://www.nws.noaa.gov/datamgmt/index.html

DATA MANAGEMENT
TELECOMMUNICATION OPERATIONS CENTER
RTH WASHINGTON SENDS



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