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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 ACTIVE cruise from Jamaica to Spithead started at 1767-04-01 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747146, 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: 27.115833 * Median Longitude: -68.025833 * South-bound Latitude: 21.180000 * West-bound Longitude: -72.370000 * North-bound Latitude: 32.320000 * East-bound Longitude: -57.480000
Date/Time Start: 1767-04-01T17:00:00 * Date/Time End: 1767-04-12T16:00:00
Event(s):
Active_17670401_NMM_ADM/L/A16 * Latitude Start: 17.700000 * Longitude Start: -76.760000 * Latitude End: 50.680000 * Longitude End: -0.960000 * Date/Time Start: 1767-04-01T00:00:00 * Date/Time End: 1767-04-12T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Active, Voyage: Jamaica - Spithead, 1st Observer: Robert Corkett (Captain), 2nd Observer: William Carr Fielding (1st Officer/Master), 3rd Observer: James Sutherford (2nd Officer/Lieutenant), Company: Royal Navy
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
LandmarkLandmarkName of first landmark
BearingBearingBearing of the first landmark
Distance to landmarkDistancearbitrary unitsDistance to the first landmark
CourseCourseCourse of the ship during the past 24 hours
10 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
11 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.
12 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.
13 Wind force descriptionWind force descrAll reported wind forces on this day
14 Precipitation descriptionPrecip descr
15 ClearnessClearness
16 GustsGusts1 If wind gusts are reported
17 Precipitation/RainRain1 If rain was reported
18 FogFog1 If fog was reported
19 Snow typeSnow1 If snow was reported
20 ThunderThunder1 If thunder and or lightning was reported
21 HailHail1 If hail was reported
22 Sea iceSea ice1 If sea-ice or icebergs were reported
23 IdentificationIDCLIWOC 2.1 line number
Size:
228 data points

Data

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


Date/Time

Latitude

Longitude

dd [deg]
(Wind direction (from which th...)

ff [m/s]
(calculated from the descripti...)

Landmark
(Name of first landmark)

Bearing
(Bearing of the first landmark)

Distance [arbitrary units]
(Distance to the first landmark)

Course
(Course of the ship during the...)
10 
Distance [arbitrary units]
(Distance travelled during the...)
11 
Decl [deg]
(It is generally accepted by t...)
12 
Wind dir descr
(All reported wind directions ...)
13 
Wind force descr
(All reported wind forces on t...)
14 
Precip descr
15 
Clearness
16 
Gusts
(1 If wind gusts are reported)
17 
Rain
(1 If rain was reported)
18 
Fog
(1 If fog was reported)
19 
Snow
(1 If snow was reported)
20 
Thunder
(1 If thunder and or lightning...)
21 
Hail
(1 If hail was reported)
22 
Sea ice
(1 If sea-ice or icebergs were...)
23 
ID
(CLIWOC 2.1 line number)
1767-04-01T17:0021.18-72.25286.7TORTUGAS26:55W23N2E20.005NEBN, NNEMODERATEHAZY0000000189
1767-04-02T17:0022.18-72.37281.0NW CAICOSS4W7N4E21.005NNELIGHT AIRSCLEAR0000000190
1767-04-03T17:0022.48-71.92506.7NW CAICOSS59W19N68E50.005SE, NEMODERATE, PM MODERATE BREEZESHAZY0000000191
1767-04-04T17:0023.15-72.13836.7NW CAICOSS24:08W32N13W41.004EBNMODERATE, PM MODERATE BREEZESHAZY0000000192
1767-04-05T17:0024.97-72.03949.3NW CAICOSS12:15W73N2E110.004ENE, EBN, EFRESH BREEZESHAZY0000000193
1767-04-06T17:0026.70-71.021059.3NW CAICOSS17:59W107NNE1/2E118.004EBSFRESH BREEZESCLOUDY0000000194
1767-04-07T17:0028.47-70.221026.7NW CAICOSS18:58W143N22E114.001EBSMODERATECLEAR0000000195
1767-04-08T17:0029.63-68.68136NW CAICOSS24:57W173N49E107.001ESE, SEMODERATE, AM SQUALLYRAINCLEAR0100000196
1767-04-09T16:0030.33-65.981699.3NW CAICOSS35:11W212EBN1/2N146.000SBEFRESH BREEZESCLEAR0000000197
1767-04-10T16:0031.90-63.051586.7NW CAICOSS42:53W276EBN1/2N156.000SSEMODERATEHAZY0000000198
1767-04-11T16:0032.08-59.1816719.0NW CAICOSS49:19W319EBN1/2N20.00-2SBEMODERATE, AM FRESH GALESHAZY0000000199
1767-04-12T16:0032.32-57.483469.3NW CAICOSS51:58W345N81E87.00-3NBWFRESH BREEZESHAZY0000000200