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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 CASTOR cruise from Hellevoetsluis to Funchal started at 1768-12-11 [dataset]. Nationaal Archief of the Netherlands, Den Haag, Netherland, PANGAEA, https://doi.org/10.1594/PANGAEA.747820, 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: 41.170645 * Median Longitude: -12.656452 * South-bound Latitude: 32.180000 * West-bound Longitude: -16.880000 * North-bound Latitude: 49.300000 * East-bound Longitude: -5.230000
Date/Time Start: 1768-12-11T00:00:00 * Date/Time End: 1769-01-13T13:00:00
Event(s):
Castor_17681211_ADM_177_1170 * Latitude Start: 51.940000 * Longitude Start: 3.720000 * Latitude End: 32.270000 * Longitude End: -16.930000 * Date/Time Start: 1768-12-11T00:00:00 * Date/Time End: 1769-01-13T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Castor (Fregat), Voyage: Hellevoetsluis - Funchal, 1st Observer: P. Van Hoogwerff (Kapitein), 2nd Observer: J.H. Hiksen (1E Schrijver), Company: ADM
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeGeocode
2LATITUDELatitudeGeocode
3LONGITUDELongitudeGeocode
4Wind 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.
5Wind speedffm/scalculated from the descriptive terms of wind force given in the observations
6Image number/nameImage no/nameIdentification Number of the original image
7LandmarkLandmarkName of first landmark
8BearingBearingBearing of the first landmark
9Distance to landmarkDistancearbitrary unitsDistance to the first landmark
10LandmarkLandmarkName of second landmark
11BearingBearingBearing of the second landmark
12Distance to landmarkDistancearbitrary unitsDistance to the second landmark
13LandmarkLandmarkName of third landmark
14BearingBearingBearing of the third landmark
15Distance to landmarkDistancearbitrary unitsDistance to the third landmark
16--1 If position is considered to be coastal (in port or near coastal disturbances)
17WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
18GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
19CommentCommentLife on board
20CourseCourseCourse of the ship during the past 24 hours
21DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
22CommentCommentOther remarks, that were not possible to put in the other remark fields
23DeclinationDecldegIt 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.
24Compass, established errorCompass established e
25Wind direction descriptionWind dir descrAll reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
26Wind force descriptionWind force descrAll reported wind forces on this day
27Present weatherwwWeather description
28Precipitation descriptionPrecip descr
29State of the sea descriptionState sea descr
30Cloud typeCloud type
31GustsGusts1 If wind gusts are reported
32Precipitation/RainRain1 If rain was reported
33FogFog1 If fog was reported
34Snow typeSnow1 If snow was reported
35ThunderThunder1 If thunder and or lightning was reported
36HailHail1 If hail was reported
37Sea iceSea ice1 If sea-ice or icebergs were reported
38IdentificationIDCLIWOC 2.1 line number
Size:
727 data points

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