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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 CURACAO cruise from Paramaribo to Curaçao started at 1840-12-07. 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: 10.327500 * Median Longitude: -62.690000 * South-bound Latitude: 6.670000 * West-bound Longitude: -68.980000 * North-bound Latitude: 12.000000 * East-bound Longitude: -56.520000
Date/Time Start: 1840-12-07T16:00:00 * Date/Time End: 1840-12-14T17:00:00
Curacao_18401207_1+_REIS_22 * Latitude Start: 5.950000 * Longitude Start: -55.190000 * Latitude End: 12.370000 * Longitude End: -68.570000 * Date/Time Start: 1840-12-07T00:00:00 * Date/Time End: 1840-12-14T00:00:00 * Campaign: Cliwoc_cruise * Device: Underway cruise track measurements (CT) * Comment: Ship: Curacao (Steampowered Wa), Voyage: Paramaribo - Curacao, Company: MAR, Other ship information: BUILt AS ''CALPE'' IN 1826 IN DOVER, UK. SCRAPPED IN 1850. LENGTH 130FT 6IN, BEAM 26FT 9IN, DEPTH 13FT 6IN, DISPLACEMENT 438T. THREE MASTS, BARQUE RIG. SIDE LEVER PROPULSION OF 100HP. 1 STUK VAN 48 POND, UITGEBOORD TOT 60 POND, 2 METALEN STUKKEN VAN 6 PON
#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
8DeclinationDecldegIt 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.
9Sensor readingReadingarbitrary unitsReading of the (outside) air thermometer
10Sensor readingReadingarbitrary unitsReading of the air pressure
11Wind direction descriptionWind dir descrAll reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
12Wind force descriptionWind force descrAll reported wind forces on this day
13GustsGusts1 If wind gusts are reported
14Precipitation/RainRain1 If rain was reported
15FogFog1 If fog was reported
16Snow typeSnow1 If snow was reported
17ThunderThunder1 If thunder and or lightning was reported
18HailHail1 If hail was reported
19Sea iceSea ice1 If sea-ice or icebergs were reported
21IdentificationIDCLIWOC 2.1 line number
135 data points

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