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NCEP sample file  multi_1.glo_30mext.t00z.f000.grib contains:

parameter Name

Discipline

Category

parameter
Number

vertical level

horizontal grid

time

bitmap

file

u-component of wind

0

2




typeOfFirstFixedSurface = 1 
[Ground or water surface]

gridDefinitionTemplateNumber = 0 [Latitude/longitude]
latitudeOfFirstGridPoint = 90000000
longitudeOfFirstGridPoint = 0

resolutionAndComponentFlags = 48 [00110000]

latitudeOfLastGridPoint = -77500000
longitudeOfLastGridPoint = 359500000
iDirectionIncrement = 500000
jDirectionIncrement = 500000

IndicatorOf

UnitOfTimeRange = 1 [Hour]



bitMapIndicator = 0 
[A bit map applies to this product]

v-component of wind

0

2

3

Significant height of 
combined wind waves and swell

10

0

3

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