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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 GIBRALTAR cruise from Boston to Antigua started at 1771-02-21 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749412, 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: 32.138214 * Median Longitude: -61.403571 * South-bound Latitude: 19.900000 * West-bound Longitude: -69.570000 * North-bound Latitude: 42.500000 * East-bound Longitude: -49.190000
Date/Time Start: 1771-02-21T17:00:00 * Date/Time End: 1771-03-20T15:00:00
Event(s):
Gibraltar_17710221_NMM_ADM/L/G203 * Latitude Start: 41.980000 * Longitude Start: -67.060000 * Latitude End: 17.000000 * Longitude End: -60.500000 * Date/Time Start: 1771-02-21T00:00:00 * Date/Time End: 1771-03-20T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Gibraltar (6th Rate Frigate), Voyage: Boston - Antigua, 1st Observer: Robert Bond (Captain), 2nd Observer: Charles Little (1st Officer/Master), Company: Royal Navy, Other ship information: 20G 430BM
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:
527 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)
1771-02-21T17:0042.50-68.442876.7CAPE ANNN81W27S81E94.00-6NNW, WNWMODERATECLOUDY0000000100931
1771-02-22T16:0041.30-65.393076.7STH END OF NUNTUCKET SHOALSW40S62E156.00-8NWMODERATECLOUDY0000000100932
1771-02-23T16:0039.13-64.293309.3CAPE CHARLESWBS191SSE153.00-8WNW, NNWFRESH BREEZES AND SQUALLYSHOWERS OF HAIL AND RAIN1100010100933
1771-02-24T16:0037.27-66.103009.3CAPE CHARLESW140SW1/2S143.00-4NNW, NWBWFRESH BREEZES AND SQUALLY0000000100934
1771-02-25T16:0036.07-66.103611.0CAPE CHARLESW10N156S72.00-4NW, CALM, ENE, CALMFIRST MODERATE, LATTER LIGHT AIRS AND CALMSCLOUDY0000000100935
1771-02-26T17:0036.65-67.6523419.0CAPE HENRYW4N121NWBW3/4W82.00-2CALM, W, SWBWFIRST LIGHT AIRS AND CALM, LATTER FRESH GALESCLOUDY0000000100936
1771-02-27T17:0037.27-68.5217822.6CAPE CHARLESWED120NW53.00-2SSW, SFIRST FRESH GALES, MID AND LATTER STRONG GALES AND SQUALLY0000000100937
1771-02-28T17:0037.02-68.2217822.6CAPE HENRYW131SE1/2S19.00-2SSTRONG GALES AND VERY HARD SQUALLS0000000100938
1771-03-01T17:0036.47-67.5217822.6CAPE CHARLESWBN145SE47.00-2SSTRONG GALES AND VERY HARD SQUALLS0000000100939
1771-03-02T17:0035.97-67.523616.7CAPE HENRYWBN147S30.00-2S, NW, CALMSTRONG GALES AND HARD SQUALLS, MID AND LATTER MODERATECLOUDY0000000100940
1771-03-03T17:0036.80-69.4035822.6CAPE HENRYW3N113N61W104.00-2SWBW, SSE, NFIRST MODERATE, MID AND LATTER STRONG GALES AND SQUALLYFAIR0000000100941
1771-03-04T17:0036.25-68.722746.7CAPE HENRYW1/2N125SE47.00-2W1/2NFIRST AND MID STRONG GALES AND HARD SQUALLS, LATTER MODERATE0000000100942
1771-03-05T17:0034.78-69.573029.3CAPE HENRYWNW159SE88.00-2WNW, NWBWFRESH BREEZESCLOUDY0000000100943
1771-03-06T16:0034.00-66.743009.3BERMUDASS58E53S63E110.00-4NWBWFRESH BREEZES AND SQUALLYHEAVY SEA0000000100944
1771-03-07T16:0033.73-63.9033419.0BERMUDASS1/2W30W1/2S143.00-4NNWFRESH GALESCLOUDY0000000100945
1771-03-08T16:0033.27-61.401089.3ANTIGUAS3W382S75E132.00-5ESEFRESH BREEZESFAIR0000000100946
1771-03-09T16:0033.17-57.802439.3ANTIGUAS15W346E1/4S180.00-5WSWFRESH BREEZESCLOUDY0000000100947
1771-03-10T16:0031.28-56.392456.7ANTIGUAS21W310SEBS136.00-3WSWFIRST FRESH GALES, MID AND LATTER MODERATECLOUDY0000000100948
1771-03-11T16:0030.45-57.551896.7ANTIGUAS19W288SW1/2S79.00-2NW, SEBE, SBWFIRST LIGHT AIRS, LATTER MODERATECLOUDY0000000100949
1771-03-12T16:0030.00-57.551781.0ANTIGUAS19W281S21.00-2S, SSE, S1ST MODERATE, MID FRESH GALES, LATTER LIGHT AIRS AND CALMSCLOUDY0000000100950
1771-03-13T16:0028.62-56.442226.7ANTIGUAS26W258SEBS107.00-3SWMODERATECLOUDY0000000100951
1771-03-14T16:0026.80-55.051576.7ANTIGUAS36W243SEBS134.00-1SE, SSEMODERATESWELL FROM NECLOUDY0000000100952
1771-03-15T16:0024.47-53.3526919.0ANTIGUAS49W224SEBS108.00-1W1ST FRESH BREEZES, LATTER FRESH GALES AND SQUALLYCLOUDY0000000100953
1771-03-16T16:0022.62-53.353611.0ANTIGUAS57:30W206S111.00-1W, CALMFIRST FRESH GALES AND SQUALLY, LATTER LIGHT AIRS AND CALMS0000000100954
1771-03-17T15:0022.15-52.242031.0ANTIGUAS52:30W220ESE66.000CALM, SWBW, SBE, SSWLIGHT AIRSCLEAR0000000100955
1771-03-18T15:0021.38-51.042036.7ANTIGUAWSW233SEBE1/2E77.000SSWMODERATECLOUDY0000000100956
1771-03-19T15:0020.55-49.872036.7ANTIGUAS74W251SE1/4E90.000SSWMODERATEFAIR0000000100957
1771-03-20T15:0019.90-49.193616.7ANTIGUAW12S260SE55.000S, SSW, CALMMODERATECLEAR0000000100958