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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 BLANCHE cruise from St. Christophers to Carlise Bay started at 1793-09-04 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747658, 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: 23.441304 * Median Longitude: -58.905652 * South-bound Latitude: 14.220000 * West-bound Longitude: -63.080000 * North-bound Latitude: 29.030000 * East-bound Longitude: -55.800000
Date/Time Start: 1793-09-04T16:00:00 * Date/Time End: 1793-09-27T16:00:00
Event(s):
Blanche_17930904_NMM_ADM/L/B97 * Latitude Start: 19.820000 * Longitude Start: -62.980000 * Latitude End: 13.000000 * Longitude End: -60.150000 * Date/Time Start: 1793-09-04T00:00:00 * Date/Time End: 1793-09-27T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Blanche (5th Rate Frigate), Voyage: St Christophers (Basse Terre) - Carlise Bay Barbados, 1st Observer: Christopher Parker (Captain), 2nd Observer: Adraham Rose (1st Officer/Master), Company: Royal Navy, Other ship information: 32G 710BM
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 State of the sea descriptionState sea descr
16 ClearnessClearness
17 GustsGusts1 If wind gusts are reported
18 Precipitation/RainRain1 If rain was reported
19 FogFog1 If fog was reported
20 Snow typeSnow1 If snow was reported
21 ThunderThunder1 If thunder and or lightning was reported
22 HailHail1 If hail was reported
23 Sea iceSea ice1 If sea-ice or icebergs were reported
24 IdentificationIDCLIWOC 2.1 line number
Size:
393 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 
State sea descr
16 
Clearness
17 
Gusts
(1 If wind gusts are reported)
18 
Rain
(1 If rain was reported)
19 
Fog
(1 If fog was reported)
20 
Snow
(1 If snow was reported)
21 
Thunder
(1 If thunder and or lightning...)
22 
Hail
(1 If hail was reported)
23 
Sea ice
(1 If sea-ice or icebergs were...)
24 
ID
(CLIWOC 2.1 line number)
1793-09-04T16:0019.82-62.98936.7DOG ISLANDS10W30N10E89.003EBN, EMODERATE BREEZEHAZY000000029881
1793-09-05T16:0020.75-63.08826.7DOG ISLANDS3:40W48N6W55.003NE, NNE, EBNLIGHT BREEZE THEN MODERATE BREEZEHAZY THEN CLEAR000000029882
1793-09-06T16:0021.70-62.45246.7DOG ISLANDS12:39W69N23E67.001VARIABLE, E, NNEMODERATE BREEZESCLEAR000000029883
1793-09-08T16:0023.90-61.78891.0DOG ISLANDS15:30W123N21E96.00-1SE, ELIGHT AIRS AND SQUALLYHEAVY RAINCLEAR010000029884
1793-09-09T16:0024.72-61.353629.3DOG ISLANDS15:30W123N26E54.00-1VARIABLEFRESH BREEZESHAZY000000029885
1793-09-10T16:0026.25-60.071236.7DOG ISLANDS20:15W169N37E119.00-1SSE, SEBEFRESH BREEZES THEN MODERATECLOUDY THEN CLEAR000000029886
1793-09-11T16:0027.37-58.471342.6N35E27.00-1NEBN, NEBE, SELIGHT BREEZESCLEAR000000029887
1793-09-12T16:0026.97-58.921129.3N4E26.00-1VARIABLE, EBS, ESEFRESH BREEZECLEAR000000029888
1793-09-13T16:0027.05-58.871346.7N22W27.00-1EBS, SSW, SEMODERATE AND SQUALLYRAINCLEAR010000029889
1793-09-14T16:0027.33-58.471232.6N50E27.00-1VARIABLE, SSE, SEBEMODERATE BREEZES THEN LIGHT BREEZESRAINSWELLCLOUDY010000029890
1793-09-15T16:0028.18-57.52979.3N45E71.00-4SEBE, VARIABLE, SE, EBSMODERATE BREEZES THEN FRESH BREEZESCLOUDY000000029891
1793-09-16T16:0029.03-56.151309.3N55E88.00-5SEBE, SSE, SEFRESH BREEZESCLEAR000000029892
1793-09-17T16:0028.77-56.081649.3S14W17.00-5SSE, SEBE, SBELIGHT BREEZES THEN FRESH BREEZESCLEAR000000029893
1793-09-18T16:0027.80-55.801412.6S15W59.00-5ESE, VARIABLE, SEBSLIGHT BREEZESHAZY000000029894
1793-09-19T16:0026.37-57.251109.3S42W116.00-3NEBE, ENE, ESELIGHT BREEZES THEN FRESH BREEZESCLOUDY000000029895
1793-09-20T16:0023.47-58.45789.3S21W185.00-1EBS, EBNFRESH BREEZES AND SQUALLYRAINCLOUDY010000029896
1793-09-21T16:0021.88-58.551029.3S3W103.001SEBS, EBSFRESH BREEZESCLOUDY000000029897
1793-09-22T16:0021.78-57.951366.7N67E36.001VARIABLE, SEBS, SE, SEFRESH BREEZES THEN MORE MODERATERAINCLOUDY010000029898
1793-09-23T16:0020.63-58.181259.3S11W70.001VARIABLE, ESE, SE, EBS, SEBEFRESH BREEZES AND SQUALLYRAINCLOUDY010000029899
1793-09-24T16:0018.53-57.981026.7S5E126.001VARIABLE, E, EBSMODERATE BREEZES AND SQUALLYRAINCLEAR010000029900
1793-09-25T16:0016.93-58.071166.7S3W95.003VARIABLE, E, SE, SEBS, ESEFRESH BREEZES THEN MODERATECLEAR000000029901
1793-09-26T16:0015.70-58.131040.0S2W74.003ESE, VARIABLE, EBSLIGHT AIRS INCLINBLE TO CALM000000029902
1793-09-27T16:0014.22-58.283626.7S5W89.003VARIABLELIGHT AIRS THEN MODERATECLEAR THEN CLOUDY000000029903