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Unformatted text preview: E 1 August 24, 2007 MOORED DATA BUOY OBSERVATION CODE AND C-MAN OBSERVATIONS I. AUTOMATIC DATA BUOY OBSERVATION CODE FORMAT Observations from moored buoys are transmitted in a slightly modified form of the FM-13 SHIP code. C-MAN Observations are transmitted in a modified form of the FM- 12 SYNOP code. Observations from drifting buoys are transmitted in the FM-18 BUOY code. Reports of spectral wave information from a ship, buoy, aircraft or satellite platform are transmitted in the FM-65 WAVEOB format. Neither the FM-18 BUOY code or the FM-65 WAVEOB code is presented here. A. SYMBOLIC FORM OF THE FM-13-SHIP CODE FOR MOORED BUOYS M i M i M j M j A 1 b w n b n b n b YYGGi w 99L a L a L a Q c L o L o L o L o i R i X /// /ddff 1s n TTT 2s n T d T d T d (3PoPoPoPo) 4PPPP 5appp 9GGgg 22200 0s n T w T w T w 1P wa P wa H wa H wa 70H wa H wa H wa 333 912ff 555 11fff 22fff 3GGgg 4ddf m f m 6GGgg dddfff dddfff dddfff dddfff dddfff dddfff. If no data is available for an entire group, then that group may be omitted from the report. Example of a Moored Buoy message. SMVD15 KWBC 061200 BBXX 42002 06121 99259 70936 46/// /2403 10257 20226 40117 53014 91149 22200 00289 10401 70004 333 91207 555 11032 22033 31123 42211 61139 228071 224096 226088 227076 216068 203056= Definition of Groups 1. Buoy identifier, time, and location groups. M i M i M j M j- Bulletin Identifier E 2 August 24, 2007 The first group in the section (M i M i M j M j ) is not transmitted from the buoy, but is added on to a group of reports before they are transmitted in a bulletin. In any bulletin of reports from ocean stations, M i M i M j M j is always encoded as BBXX. The group BBXX is then transmitted only once in the bulletin, as the first line of the bulletin. The only thing that BBXX does is to identify the bulletin as a group of reports from ocean stations. A 1 b w n b n b n b - Buoy Identifier A 1 - WMO Region in which the buoy is located. The U.S. operates stations in both WMO Region IV and Region V. A U.S. buoy located in WMO Region IV would have an identifier beginning with number 4. A U.S. buoy located in WMO region V would have an identifier beginning with 5. See appendix C for WMO Region charts. b w - Sub-area within the WMO Region . Figure 1 shows the sub- areas within the WMO areas. Each of them is identified by the two-digit number given by. The identifiers for buoys within the WMO Regions IV and V are as follows: A 1 b w = 41: North Atlantic from about Cape Hatteras south. A 1 b w = 42: Gulf of Mexico A 1 b w = 44: North Atlantic from about Cape Hatteras north A 1 b w = 45: Great Lakes A 1 b w = 46: Off the west coast of the U.S. and the Gulf of Alaska A 1 b w = E 2 August 24, 2007 The first group in the section (M i M i M j M j ) is not transmitted from the buoy, but is added on to a group of reports before they are transmitted in a bulletin. In any bulletin of reports from ocean stations, M i M i M j M j is always encoded as BBXX. The group is always encoded as BBXX....
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This note was uploaded on 04/02/2008 for the course ATMO 251-501/50 taught by Professor Alcorn during the Spring '07 term at Texas A&M.
- Spring '07