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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 LUCIPARAS cruise from Batavia to Nieuwediep started at 1848-12-25. Koninklijk Nederlands Meteorologisch Instituut, De Bilt, PANGAEA,, 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). PANGAEA,

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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,
Median Latitude: -0.669266 * Median Longitude: 19.676422 * South-bound Latitude: -36.200000 * West-bound Longitude: -36.220000 * North-bound Latitude: 52.650000 * East-bound Longitude: 106.870000
Date/Time Start: 1848-12-25T13:00:00 * Date/Time End: 1849-04-12T20:00:00
Luciparas_18481225_O_REIS_25B_P252-261 * Latitude Start: -6.100000 * Longitude Start: 106.860000 * Latitude End: 53.000000 * Longitude End: 4.490000 * Date/Time Start: 1848-12-25T00:00:00 * Date/Time End: 1849-04-12T00:00:00 * Campaign: Cliwoc_cruise * Device: Underway cruise track measurements (CT) * Comment: Ship: Lucipara'S, Voyage: Batavia - Nieuwediep, 1st Observer: C. Visman (Kapitein)
#NameShort NameUnitPrincipal InvestigatorMethodComment
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
6Pressure, 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
7Temperature, airTTT°C
8LandmarkLandmarkName of first landmark
9--1 If position is considered to be coastal (in port or near coastal disturbances)
10WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
11GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
12DeclinationDecldegIt 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.
13Wind scale referenceWind scale ref#Name of, or reference to the wind scale that has been used
14Sensor readingReadingarbitrary unitsReading of the (outside) air thermometer
15Sensor readingReadingarbitrary unitsReading of the air pressure
16Wind direction descriptionWind dir descrAll reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
17Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
18Current speed descriptionV descr
19Wind force descriptionWind force descrAll reported wind forces on this day
20Present weatherwwWeather description
21Precipitation descriptionPrecip descr
22State of the sea descriptionState sea descr
23Cloud typeCloud type
25GustsGusts1 If wind gusts are reported
26Precipitation/RainRain1 If rain was reported
27FogFog1 If fog was reported
28Snow typeSnow1 If snow was reported
29ThunderThunder1 If thunder and or lightning was reported
30HailHail1 If hail was reported
31Sea iceSea ice1 If sea-ice or icebergs were reported
33IdentificationIDCLIWOC 2.1 line number
2436 data points

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