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García-Herrera, Ricardo; Können, Gunther P; Wheeler, Dennis A; Prieto, Maria del Rosario; Jones, Philip D; Koek, Frits B (2010): Meteorological observations during MAGDALENA cruise from Nieuwediep to Calcutta started at 1851-01-01 [dataset]. Koninklijk Nederlands Meteorologisch Instituut, De Bilt, PANGAEA, https://doi.org/10.1594/PANGAEA.750576, In: Jones, Philip D; Wheeler, Dennis A; Können, Gunther P; Koek, Frits B; Prieto, Maria del Rosario; García-Herrera, Ricardo (2007): Climatological observations from ship logbooks between 1750 and 1854 (release 2.1) [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.611088

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Related to:
García-Herrera, Ricardo; Können, Gunther P; Wheeler, Dennis A; Prieto, Maria del Rosario; Jones, Philip D; Koek, Frits B (2005): CLIWOC: A Climatological Database for the World's Oceans 1750–1854 (and 10 more publications about CLIWOC results in the same volume). Climatic Change, 73(1-2), 1-12ff, https://doi.org/10.1007/s10584-005-6952-6
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00090: Climatological Database for the Worlds Oceans: 1750-1854
Coverage:
Median Latitude: 10.088235 * Median Longitude: 89.205882 * South-bound Latitude: -7.000000 * West-bound Longitude: 84.000000 * North-bound Latitude: 21.000000 * East-bound Longitude: 92.000000
Date/Time Start: 1851-01-01T06:00:00 * Date/Time End: 1851-02-03T06:00:00
Event(s):
Magdalena_18510101_B_REIS_1B_P10-19 * Latitude Start: 53.000000 * Longitude Start: 4.490000 * Latitude End: 19.150000 * Longitude End: 88.300000 * Date/Time Start: 1851-01-01T00:00:00 * Date/Time End: 1851-02-03T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Magdalena, Voyage: Nieuwediep - Calcutta, 1st Observer: A.P. Klein (Kapitein)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DATE/TIMEDate/TimeGeocode
LATITUDELatitudeGeocode
LONGITUDELongitudeGeocode
Wind directiondddegWind direction (from which the wind is blowing) in whole degrees from: 1-360; 361 = calm, 362 = variable. It is not clear from many logbook entries whether the wind direction has been corrected for the magnetic variation (or declination). To avoid any misunderstanding, all winds from reports that included a valid position in the period 1750-1854 were corrected. All other wind directions are given without being corrected.
Wind speedffm/scalculated from the descriptive terms of wind force given in the observations
Pressure, atmosphericPPPPhPaNo temperature correction was applied. The following factors have been used for the conversion to hPa: 2.54 cm in an inch; 13.596 specific gravity of mercury; 980.65 cm/s gravity at 45° latitude
DeclinationDecldegIt is generally accepted by the CLIWOC team that the wind directions, reported by the ships officers, were relative to the magnetic North direction. Navigators were well aware of the difference between the true and magnetic north direction, but the compasses (we assumed that the bearing-compasses were mostly used for determining the wind direction) were not always adjusted. Therefore the wind direction has to be corrected. The magnetic declination (or variation, as it is known on board ships) is given for the whole CLIWOC period (1750-1850) for every 5x5 degree square. The number was added to the wind direction to get the true wind direction.
Wind scale referenceWind scale ref#Name of, or reference to the wind scale that has been used
Sensor readingReadingarbitrary unitsReading of the air pressure
10 Wind direction descriptionWind dir descrAll reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
11 Wind force descriptionWind force descrAll reported wind forces on this day
12 Present weatherwwWeather description
13 Precipitation descriptionPrecip descr
14 Cloud typeCloud type
15 GustsGusts1 If wind gusts are reported
16 Precipitation/RainRain1 If rain was reported
17 FogFog1 If fog was reported
18 Snow typeSnow1 If snow was reported
19 ThunderThunder1 If thunder and or lightning was reported
20 HailHail1 If hail was reported
21 Sea iceSea ice1 If sea-ice or icebergs were reported
22 IdentificationIDCLIWOC 2.1 line number
Size:
538 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Date/Time

Latitude

Longitude

dd [deg]

ff [m/s]

PPPP [hPa]

Decl [deg]

Wind scale ref [#]

Reading [arbitrary units]
10 
Wind dir descr
11 
Wind force descr
12 
ww
13 
Precip descr
14 
Cloud type
15 
Gusts
16 
Rain
17 
Fog
18 
Snow
19 
Thunder
20 
Hail
21 
Sea ice
22 
ID
1851-01-01T06:00-7.0084.002036.71010.90429.85ZZW40000000158643
1851-01-02T06:00-6.0085.002702.61011.20229.86W20000000158644
1851-01-03T06:00-5.0086.002252.61011.90229.88ZW20000000158645
1851-01-04T06:00-4.0087.002032.61011.90229.88ZZW20000000158646
1851-01-05T06:00-2.0088.003166.71012.31429.89NW40000000158647
1851-01-06T06:00-1.0088.0031615.41011.21729.86NW70000000158648
1851-01-07T06:00-1.0090.002262.61011.91229.88ZW2REGEN0100000158649
1851-01-08T06:001.0091.0012.61012.61229.90N20000000158650
1851-01-09T06:003.0092.000.01012.6129.90STIL0000000158651
1851-01-10T06:003.0092.000.01013.3129.92STIL0000000158652
1851-01-11T06:004.0092.00461012.6129.90NODONDER BLIKSEMREGENOPKLARENDE LUCHT0100100158653
1851-01-12T06:004.0092.00699.31012.61529.90ONO5ZWARE BUIEN WINDZWARE BUIEN REGEN1100000158654
1851-01-13T06:006.0092.00699.31014.01529.94ONO50000000158655
1851-01-14T06:008.0092.00476.71014.02429.94NO40000000158656
1851-01-15T06:0010.0091.00366.71014.02429.94NOTN40000000158657
1851-01-16T06:0012.0089.00369.31014.62529.96NOTN50000000158658
1851-01-17T06:0014.0087.00479.31014.62529.96NO50000000158659
1851-01-18T06:0013.0089.00479.31014.62529.96NO50000000158660
1851-01-19T06:0014.0089.00479.31014.02529.94NO50000000158661
1851-01-20T06:0016.0088.00474.61013.32329.92NO30000000158662
1851-01-21T06:0017.0088.00479.31015.32529.98NO50000000158663
1851-01-22T06:0017.0088.00366.71016.02430.00NOTN40000000158664
1851-01-23T06:0017.0091.00136.71016.02430.00NTO40000000158665
1851-01-24T06:0017.0091.0022.61015.32229.98N20000000158666
1851-01-25T06:0017.0090.00136.71016.02430.00NTO40000000158667
1851-01-26T06:0018.0089.0021.01016.72130.02N10000000158668
1851-01-27T06:0018.0089.00251.01016.72130.02NNO10000000158669
1851-01-28T06:0019.0089.0021.01016.02130.00N10000000158670
1851-01-29T06:0019.0089.0021.01015.32129.98N10000000158671
1851-01-30T06:0019.0089.00471.01015.32129.98NO10000000158672
1851-01-31T06:0020.0089.0021.01016.02130.00N10000000158673
1851-02-01T06:0021.0089.00136.71016.02430.00NTO40000000158674
1851-02-02T06:0021.0089.000.01017.3230.04STIL0000000158675
1851-02-03T06:0021.0089.002501.01018.02130.06WZW10000000158676