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Changes to ECMWF's grids in 2016

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GRIB edition 2 Grid Def<strong>in</strong>ition Section<br />

=============== SECTION_3 ( length=72, padd<strong>in</strong>g=0 ) ===============<br />

1-4 section3Length = 72<br />

5 numberOfSection = 3<br />

6 sourceOfGridDef<strong>in</strong>ition = 0 [Specified <strong>in</strong> Code table 3.1<br />

(grib2/tables/5/3.0.table) ]<br />

...<br />

31-34 Ni = 5760<br />

35-38 Nj = 2881<br />

39-42 basicAngleOfTheInitialProductionDoma<strong>in</strong> = 0<br />

43-46 subdivisionsOfBasicAngle = MISSING<br />

47-50 latitudeOfFirstGridPo<strong>in</strong>t = 90000000<br />

51-54 longitudeOfFirstGridPo<strong>in</strong>t = 0<br />

55 resolutionAndComponentFlags = 0 [00000000]<br />

56-59 latitudeOfLastGridPo<strong>in</strong>t = -90000000<br />

60-63 longitudeOfLastGridPo<strong>in</strong>t = 359938000<br />

64-67 iDirectionIncrement = MISSING<br />

68-71 jDirectionIncrement = MISSING<br />

72 scann<strong>in</strong>gMode = 0 [00000000]<br />

grib_api key:<br />

Bits 3 & 4 set <strong>to</strong> 0<br />

ijDirectionIncrementGiven=0<br />

EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS<br />

Oc<strong>to</strong>ber 29, 2014<br />

16

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