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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 BOREAS cruise from St. Eustatius to Spithead started at 1787-06-09 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747677, 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: 38.259130 * Median Longitude: -42.868261 * South-bound Latitude: 21.250000 * West-bound Longitude: -62.150000 * North-bound Latitude: 49.620000 * East-bound Longitude: -9.450000
Date/Time Start: 1787-06-09T16:00:00 * Date/Time End: 1787-07-01T13:00:00
Event(s):
Boreas_17870609_NMM_ADM/L/B136 * Latitude Start: 16.020000 * Longitude Start: 61.900000 * Latitude End: 50.680000 * Longitude End: -0.960000 * Date/Time Start: 1787-06-09T00:00:00 * Date/Time End: 1787-07-01T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Boreas (6th Rate Frigate), Voyage: St Eustatius - Spithead, 1st Observer: Horatio Nelson (Captain), 2nd Observer: Digby Dent (1st Officer/Master), Company: Royal Navy, Other ship information: 28G 612BM
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 Present weatherwwWeather description
15 Precipitation descriptionPrecip descr
16 State of the sea descriptionState sea descr
17 ClearnessClearness
18 GustsGusts1 If wind gusts are reported
19 Precipitation/RainRain1 If rain was reported
20 FogFog1 If fog was reported
21 Snow typeSnow1 If snow was reported
22 ThunderThunder1 If thunder and or lightning was reported
23 HailHail1 If hail was reported
24 Sea iceSea ice1 If sea-ice or icebergs were reported
25 CommentComment
26 IdentificationIDCLIWOC 2.1 line number
Size:
434 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 
ww
(Weather description)
15 
Precip descr
16 
State sea descr
17 
Clearness
18 
Gusts
(1 If wind gusts are reported)
19 
Rain
(1 If rain was reported)
20 
Fog
(1 If fog was reported)
21 
Snow
(1 If snow was reported)
22 
Thunder
(1 If thunder and or lightning...)
23 
Hail
(1 If hail was reported)
24 
Sea ice
(1 If sea-ice or icebergs were...)
25 
Comment
26 
ID
(CLIWOC 2.1 line number)
1787-06-09T16:0021.25-62.15929.3ST MARTINSS11W64N11E140.002EFRESH BREEZESHAZY000000031447
1787-06-10T16:0023.67-61.6811312.3BERMUDAN17W187N10E155.000ESESTRONG BREEZES AND SQUALLY000000031448
1787-06-11T16:0025.70-61.3511312.3BERMUDAN24W146N9E124.000ESESTRONG BREEZES AND SQUALLY000000031449
1787-06-12T16:0028.20-60.7711012.3BERMUDAN37W117N8:23E146.00-3ESESTRONG BREEZES AND SQUALLYCLEAR0000000a trivial correction was made in this observation31450
1787-06-13T16:0029.82-59.982006.7BERMUDAN68:18W99N28E121.00-3SSWMODERATECLEAR000000031451
1787-06-14T16:0031.02-59.101886.7BERMUDAS75W108N28E82.00-3VARIABLE, SBWMODERATERAINCLOUDY010010031452
1787-06-15T16:0031.88-58.472006.7BERMUDAS84W117N26E58.00-3SSWMODERATEHEAVY SWELL FROM NECLEAR000000031453
1787-06-16T16:0033.58-57.432406.7BERMUDAS79W126N27E115.00-8SBW, WSWMODERATECLEAR000000031454
1787-06-17T16:0036.60-55.682406.7CORVON80E385N25E200.00-8WSWMODERATE BREEZESHAZY000000031455
1787-06-18T16:0036.67-54.703622.6CORVON80E370N85E47.00-8VARIABLELIGHT WINDSVARIABLE000000031456
1787-06-19T15:0038.72-50.821899.3CORVOS86E295N56E222.00-14WSW, SSWFRESH BREEZE AND SQUALLY000000031457
1787-06-20T15:0040.02-46.7725522.6CORVON88E230N67E203.00-15SW, WSTRONG GALES AND SQUALLY000000031458
1787-06-21T15:0041.02-43.352559.3CORVON81E185N60E167.00-15NNE, WFRESH BREEZESCLEAR000000031459
1787-06-22T15:0041.53-41.00344CORVOS75E155N75E112.00-16NVARIABLECLOUDY000000031460
1787-06-23T15:0042.50-38.4729919.0CORVOS62E121N62E127.00-16NWFRESH GALESCLOUDY000000031461
1787-06-24T14:0043.72-34.9320422.6CORVOS33E99N64E161.00-21SWSTRONG GALES AND SQUALLY000000031462
1787-06-25T14:0045.30-29.8015822.6CORVOS11W133N72E219.00-22SW, SFIRST MODERATE, MID AND LATTER STRONG GALES AND SQUALLY000000031463
1787-06-26T14:0045.88-27.171586.7LIZARDN74E304N72E114.00-22SMODERATECLOUDY000000031464
1787-06-27T14:0046.58-24.333166.7LIZARDN75E261N70E126.00-22NNWMODERATEHEAVY SWELL FROM NECLOUDY000000031465
1787-06-28T13:0047.83-21.083466.7LIZARDN76E214N67E143.00-25NBEMODERATECLEAR000000031466
1787-06-29T13:0049.33-15.022236.7LIZARDN85E140N61E230.00-25WSWMODERATECLEAR000000031467
1787-06-30T13:0049.62-12.472916.7LIZARDN85E93N83E141.00-24NBE, NWMODERATECLOUDY000000031468
1787-07-01T13:0049.52-9.453596.7LIZARDN81E41S87E153.00-24NNEMODERATECLOUDY000000031469