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-------- Original Message --------
526
NOUS41 KWBC 201114
PNSWSH
Technical Implementation Notice 10-46
National Weather Service Headquarters Washington DC
715 AM EDT Mon Sep 20 2010
TO: National Weather Service Offices
Federal Aviation Administration
Family of Services Subscribers
Other Users of NWS Aviation Forecasts
FROM: Cynthia Abelman
Chief, Aviation Services Branch
SUBJECT: Changes to the implementation of the Current Icing
Product (CIP) in GRIB format: Effective
December 1, 2010
NOTE: The following changes have no impact on NOAA Weather
Wire Service subscribers
Effective December 1, 2010, at 1300 Coordinated Universal Time,
UTC, the NWS Aviation Weather Center (AWC), in Kansas City,
Missouri, will make two changes to the product definition
section (PDS) of the CIP gridded binary edition 1 (GRIB1)
output.
The two changes apply to the 20 and 40 km horizontal resolution
CIP Icing Severity (CIP-SEV) output in GRIB1 format, originally
implemented on December 6, 2006 (List 1).
The two changes also apply to the 20 km CIP total and
Supercooled Large Droplets (SLD) Icing output in GRIB1 format
originally implemented on September 6, 2005 (List 1) and to the
40 km CIP Total and SLD Icing output in GRIB1, originally
implemented March 27, 2002 (List 2).
GRIB PDS octets and tables referred in the changes below are
derived from the National Centers For Environmental Prediction
Office Note 388 online at:
http://www.nco.ncep.noaa.gov/pmb/docs/on388/
Changes to CIP in GRIB1 format:
1. For PDS OCTET 26: Value=0 in Table C will change to Value=8
in Table C.
2. The BIT length will expand from 5 to 7 for greater resolution
List 1: Affected World Meteorological Organization (WMO)
Communication Headings for the 20 KM CIP GRIB1 output.
FLIGHT
LEVEL TOTAL ICE SLD ICE SEVERITY
----- ----------- ----------- -----------
010 YIXA93 KKCI YJXA93 KKCI YLXA93 KKCI
020 YIXA95 KKCI YJXA95 KKCI YLXA95 KKCI
030 YIXA90 KKCI YJXA90 KKCI YLXA90 KKCI
040 YIXA84 KKCI YJXA84 KKCI YLXA84 KKCI
050 YIXA85 KKCI YJXA85 KKCI YLXA85 KKCI
060 YIXA81 KKCI YJXA81 KKCI YLXA81 KKCI
070 YIXA78 KKCI YJXA78 KKCI YLXA78 KKCI
080 YIXA75 KKCI YJXA75 KKCI YLXA75 KKCI
090 YIXA73 KKCI YJXA73 KKCI YLXA73 KKCI
100 YIXA70 KKCI YJXA70 KKCI YLXA70 KKCI
110 YIXA67 KKCI YJXA67 KKCI YLXA67 KKCI
120 YIXA65 KKCI YJXA65 KKCI YLXA65 KKCI
130 YIXA62 KKCI YJXA62 KKCI YLXA62 KKCI
140 YIXA60 KKCI YJXA60 KKCI YLXA60 KKCI
150 YIXA57 KKCI YJXA57 KKCI YLXA57 KKCI
160 YIXA55 KKCI YJXA55 KKCI YLXA55 KKCI
170 YIXA53 KKCI YJXA53 KKCI YLXA53 KKCI
180 YIXA50 KKCI YJXA50 KKCI YLXA50 KKCI
190 YIXA48 KKCI YJXA48 KKCI YLXA48 KKCI
200 YIXA46 KKCI YJXA46 KKCI YLXA46 KKCI
210 YIXA45 KKCI YJXA45 KKCI YLXA45 KKCI
220 YIXA43 KKCI YJXA43 KKCI YLXA43 KKCI
230 YIXA41 KKCI YJXA41 KKCI YLXA41 KKCI
240 YIXA39 KKCI YJXA39 KKCI YLXA39 KKCI
250 YIXA38 KKCI YJXA38 KKCI YLXA38 KKCI
260 YIXA36 KKCI YJXA36 KKCI YLXA36 KKCI
270 YIXA34 KKCI YJXA34 KKCI YLXA34 KKCI
280 YIXA33 KKCI YJXA33 KKCI YLXA33 KKCI
290 YIXA32 KKCI YJXA32 KKCI YLXA32 KKCI
300 YIXA30 KKCI YJXA30 KKCI YLXA30 KKCI
LIST 2: Affected WMO communication headings for the 40 km CIP
GRIB1 output.
FLIGHT
LEVEL TOTAL ICE SLD ICE
----- ----------- -----------
010 YAWA93 KKCI YAXA93 KKCI
020 YAWA95 KKCI YAXA95 KKCI
030 YAWA90 KKCI YAXA90 KKCI
040 YAWA84 KKCI YAXA84 KKCI
050 YAWA85 KKCI YAXA85 KKCI
060 YAWA81 KKCI YAXA81 KKCI
070 YAWA78 KKCI YAXA78 KKCI
080 YAWA75 KKCI YAXA75 KKCI
090 YAWA73 KKCI YAXA73 KKCI
100 YAWA70 KKCI YAXA70 KKCI
110 YAWA67 KKCI YAXA67 KKCI
120 YAWA65 KKCI YAXA65 KKCI
130 YAWA62 KKCI YAXA62 KKCI
140 YAWA60 KKCI YAXA60 KKCI
150 YAWA57 KKCI YAXA57 KKCI
160 YAWA55 KKCI YAXA55 KKCI
170 YAWA53 KKCI YAXA53 KKCI
180 YAWA50 KKCI YAXA50 KKCI
190 YAWA48 KKCI YAXA48 KKCI
200 YAWA46 KKCI YAXA46 KKCI
210 YAWA45 KKCI YAXA45 KKCI
220 YAWA43 KKCI YAXA43 KKCI
230 YAWA41 KKCI YAXA41 KKCI
240 YAWA39 KKCI YAXA39 KKCI
250 YAWA38 KKCI YAXA38 KKCI
260 YAWA36 KKCI YAXA36 KKCI
270 YAWA34 KKCI YAXA34 KKCI
280 YAWA33 KKCI YAXA33 KKCI
290 YAWA32 KKCI YAXA32 KKCI
300 YAWA30 KKCI YAXA30 KKCI
The CIP-SEV products are available in GRIB1 format on:
1. The Satellite Broadcast Network (SBN) NOAAPORT Channel
2. NWS FTP Servers at:
20KM GRIB1 Output:
ftp://tgftp.nws.noaa.gov/SL.us008001/DC.avspt/DS.cip20
40KM GRIB1 Output:
ftp://tgftp.nws.noaa.gov/SL.us008001/DC.avspt/DS.cipgb
3. The Family of Services /FOS/ High Resolution Data Service and
Server Access Service.
The 20 KM CIP output may be viewed at:
http://aviationweather.gov/adds/icing/icing_nav.php
For questions regarding this product, contact:
David Bright
Chief, Aviation Support Branch
Aviation Weather Center
7220 NW 101st Terrace Room 101
Kansas City, MO, 64153
816-584-7204
david.bright@xxxxxxxx
NWS aviation product dissemination information is online at:
http://weather.gov/om/disemsys.shtml
National NWS Technical Implementation Notices are online at:
http://www.nws.noaa.gov/om/notif.htm
$$
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