NOAA KLM User's Guide

Section 8.3.1.2

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8.3.1.2 Archive Retrieval System (ARS) Header Record

The ARS Header Record is created by NOAA/NESDIS when data is retrieved from the NOAA Level 1b archive, and includes information on the data request and how the data was processed from the archive. A detailed description of the contents of this record are presented in Table 8.3.1.2-1.

Table 8.3.1.2-1. Format of ARS Header Record.
Start Octet End Octet DT Word Size SF Number of Words ORDER ID
1 6 c 6 0 1 NeS Number
7 14 c 8 0 1 CLASS Number (if applicable)
15 18 c 4 0 1 Order Creation Year (e.g., '1998')
19 21 c 3 0 1 Order Creation Day of Year (e.g., '365')
22 22 c 1 0 1 Processing Site Code
A = CLASS
S = NCDC/Suitland
N = NCDC/Asheville
23 30 c 8 0 1 Processing Software ID (e.g., 'Extract2')
DATA SELECTION CRITERIA
31 72 c 42 0 1 Data Set Name
73 74 c 2 0 1 <ASCII blank = 0x20>
75 75 c 1 0 1 Select Flag
T = total data set copy
S = selective data set copy (subset)
76 78 c 3 0 1 Beginning Latitude
79 81 c 3 0 1 Ending Latitude
82 85 c 4 0 1 Beginning Longitude
86 89 c 4 0 1 Ending Longitude
90 91 c 2 0 1 Start Hour (UTC)
92 93 c 2 0 1 Start Minute
94 96 c 3 0 1 Number of Minutes
97 97 c 1 0 1 Appended Data Flag
98 117 c 1 0 20 Channel Select Flags
Y = channel selected
N = channel not selected
118 119 c 2 0 1 Sensor Data Word Size
08 = 8 bits per word (reduced and packed)
10 = 10 bits per word (packed)
16 = 16 bits per word (unpacked)
DATASET SUMMARY
120 146 c 27 0 1 <ASCII blank = 0x20>
147 147 c 1 0 1 Ascend/Descend Flag
A = ascending only
D = descending only
B = both ascending and descending
148 150 c 3 0 1 First Latitude
first latitude value in the first data record
151 153 c 3 0 1 Last Latitude
last latitude value in the last data record
154 157 c 4 0 1 First Longitude
first longitude value in the first data record
158 161 c 4 0 1 Last Longitude
last longitude value in the last data record
162 181 c 20 0 1 Data Format (e.g., 'NOAA Level 1b v2')
182 187 c 6 0 1 Size of Records (in octets)
188 193 c 6 0 1 Number of Records
(total, including ARS and Data Set Header Records)
FILLER
194 512 c 1 0 319 <ASCII blank = 0x20>

Amended April 12, 2000

Amended January 5, 2005


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