Aim of this page :
( 1 message <=> 1 parameter )
01 parameterNumber = 1 Wind speed (m s-1)
02 parameterNumber = 0 Wind direction [from which blowing] (deg true)
03 parameterNumber = 2 u-component of wind (m s-1)
04 parameterNumber = 3 v-component of wind (m s-1)
05 parameterNumber = 3 Significant height of combined wind waves and swell (m)
06 parameterNumber = 11 Primary wave mean period (s)
07 parameterNumber = 10 Primary wave direction (Degree true)
08 parameterNumber = 5 Significant height of wind waves (m)
09 parameterNumber = 8 Significant height of swell waves (m)
10 parameterNumber = 8 Significant height of swell waves (m)
11 parameterNumber = 6 Mean period of wind waves (s)
12 parameterNumber = 9 Mean period of swell waves (s)
13 parameterNumber = 9 Mean period of swell waves (s)
14 parameterNumber = 4 Direction of wind waves (Degree true)
15 parameterNumber = 7 Direction of swell waves (Degree true)
16 parameterNumber = 7 Direction of swell waves (Degree true)
Sections :
f
e
Typical header :
#============== MESSAGE 4 ( length=179708 ) ==============
1-4 identifier = GRIB
5-6 reserved = 0
7 discipline = 0 [Meteorological products (grib2/tables/2/0.0.table) ]
8 editionNumber = 2
9-16 totalLength = 179708
====================== SECTION_1 ( length=21, padding=0 ) ======================
1-4 section1Length = 21
5 numberOfSection = 1
6-7 centre = 7 [US National Weather Service - NCEP (WMC) (grib2/centre.table) ]
8-9 subCentre = 0
10 tablesVersion = 2 [Version implemented on 4 November 2003 (grib2/tables/1.0.table) ]
11 localTablesVersion = 1 [Unknown code table entry (grib2/tables/2/1.1.table) ]
12 significanceOfReferenceTime = 1 [Start of forecast (grib2/tables/2/1.2.table) ]
13-14 year = 2017
15 month = 1
16 day = 30
17 hour = 0
18 minute = 0
19 second = 0
20 productionStatusOfProcessedData = 0 [Operational products (grib2/tables/2/1.3.table) ]
21 typeOfProcessedData = 1 [Forecast products (grib2/tables/2/1.4.table) ]
====================== SECTION_3 ( length=72, padding=0 ) ======================
1-4 section3Length = 72
5 numberOfSection = 3
6 sourceOfGridDefinition = 0 [Specified in Code table 3.1 (grib2/tables/2/3.0.table) ]
7-10 numberOfDataPoints = 241920
11 numberOfOctectsForNumberOfPoints = 0
12 interpretationOfNumberOfPoints = 0 [There is no appended list (grib2/tables/2/3.11.table) ]
13-14 gridDefinitionTemplateNumber = 0 [Latitude/longitude. Also called equidistant cylindrical, or Plate Carree (grib2/tables/2/3.1.table) ]
15 shapeOfTheEarth = 6 [Earth assumed spherical with radius of 6,371,229.0 m (grib2/tables/2/3.2.table) ]
16 scaleFactorOfRadiusOfSphericalEarth = 0
17-20 scaledValueOfRadiusOfSphericalEarth = 0
21 scaleFactorOfEarthMajorAxis = 0
22-25 scaledValueOfEarthMajorAxis = 0
26 scaleFactorOfEarthMinorAxis = 0
27-30 scaledValueOfEarthMinorAxis = 0
31-34 Ni = 720
35-38 Nj = 336
39-42 basicAngleOfTheInitialProductionDomain = 0
43-46 subdivisionsOfBasicAngle = 0
47-50 latitudeOfFirstGridPoint = 90000000
51-54 longitudeOfFirstGridPoint = 0
55 resolutionAndComponentFlags = 48 [00110000]
56-59 latitudeOfLastGridPoint = -77500000
60-63 longitudeOfLastGridPoint = 359500000
64-67 iDirectionIncrement = 500000
68-71 jDirectionIncrement = 500000
72 scanningMode = 0 [00000000]
====================== SECTION_4 ( length=34, padding=0 ) ======================
1-4 section4Length = 34
5 numberOfSection = 4
6-7 NV = 0
8-9 productDefinitionTemplateNumber = 0 [Analysis or forecast at a horizontal level or in a horizontal layer at a point in time (grib2/tables/2/4.0.table) ]
10 parameterCategory = 2 [Momentum (grib2/tables/2/4.1.0.table) ]
11 parameterNumber = 3 [v-component of wind (m s-1) (grib2/tables/2/4.2.0.2.table) ]
12 typeOfGeneratingProcess = 2 [Forecast (grib2/tables/2/4.3.table) ]
13 backgroundProcess = 0
14 generatingProcessIdentifier = 11
15-16 hoursAfterDataCutoff = 0
17 minutesAfterDataCutoff = 0
18 indicatorOfUnitOfTimeRange = 1 [Hour (grib2/tables/2/4.4.table) ]
19-22 forecastTime = 0
23 typeOfFirstFixedSurface = 1 [Ground or water surface (grib2/tables/2/4.5.table) ]
24 scaleFactorOfFirstFixedSurface = 0
25-28 scaledValueOfFirstFixedSurface = 1
29 typeOfSecondFixedSurface = 255 [Missing (grib2/tables/2/4.5.table) ]
30 scaleFactorOfSecondFixedSurface = 0
31-34 scaledValueOfSecondFixedSurface = 0
====================== SECTION_5 ( length=23, padding=0 ) ======================
1-4 section5Length = 23
5 numberOfSection = 5
6-9 numberOfValues = 145543
10-11 dataRepresentationTemplateNumber = 40 [JPEG2000 Packing (grib2/tables/2/5.0.table) ]
12-15 referenceValue = -2278
16-17 binaryScaleFactor = 0
18-19 decimalScaleFactor = 2
20 bitsPerValue = 13
21 typeOfOriginalFieldValues = 0 [Floating point (grib2/tables/2/5.1.table) ]
22 typeOfCompressionUsed = 0 [Lossless (grib2/tables/2/5.40.table) ]
23 targetCompressionRatio = 255
====================== SECTION_6 ( length=30246, padding=0 ) ======================
1-4 section6Length = 30246
5 numberOfSection = 6
6 bitMapIndicator = 0 [A bit map applies to this product and is specified in this Section (grib2/tables/2/6.0.table) ]
7-30246 bitmap = 30240 {
00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
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00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
00, 00, 00, 00
... 30140 more values
} # g2bitmap bitmap
====================== SECTION_7 ( length=149292, padding=0 ) ======================
1-4 section7Length = 149292
5 numberOfSection = 7
6-149292 codedValues = (145543,149287) {
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} # data_jpeg2000_packing codedValues
====================== SECTION_8 ( length=4, padding=0 ) ======================
1-4 7777 = 7777
multi_1.glo_30mext.t00z.f000.grib2