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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 PRUDENT cruise from Jamaica to Spithead started at 1779-08-17 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.751613, 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: 38.540732 * Median Longitude: -53.746098 * South-bound Latitude: 24.300000 * West-bound Longitude: -81.330000 * North-bound Latitude: 49.520000 * East-bound Longitude: -8.180000
Date/Time Start: 1779-08-17T17:00:00 * Date/Time End: 1779-09-26T13:00:00
Event(s):
Prudent_17790817_NMM_ADM/L/P143 * Latitude Start: 17.700000 * Longitude Start: -76.760000 * Latitude End: 50.680000 * Longitude End: -0.960000 * Date/Time Start: 1779-08-17T00:00:00 * Date/Time End: 1779-09-26T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Prudent (3rd Rate Frigate), Voyage: Jamaica - Spithead, 1st Observer: William Waldgrave (Captain), 2nd Observer: Soloman Ferris (1st Officer/Master), Company: Royal Navy, Other ship information: 64G 1366BM
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:
701 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)
1779-08-17T17:0024.30-81.331302.6NBE66.006ESE-SEBELIGHT WINDSCLOUDY0000000204383
1779-08-18T17:0025.40-79.831302.6BAHAMAS BANK, WEST PT OFN36E56N20E65.006SEBELIGHT WINDSCLOUDY0000000204384
1779-08-19T17:0027.25-79.27119N19E121.006ESEFINECLEAR0000000204385
1779-08-20T17:0028.75-77.57128BERMUDAN72E237NE127.004SEBEFINECLEAR0000000204386
1779-08-21T17:0029.15-76.97251BERMUDAN75E227N49E44.003SSW-WSWFINECLEAR0000000204387
1779-08-22T17:0030.75-75.572516.7BERMUDAN77E196NE127.003W-WSWMODERATE0000000a trivial correction was made in this observation204388
1779-08-23T17:0031.15-74.88228N42E160.003WSW, SSW, SWFRESH GALES, AM SQUALLYRAIN0100000204389
1779-08-24T17:0032.37-73.1520619.0NE1/2E115.003SE-S, SSWSQUALLY, PM STRONG GALES, AM FRESH GALESLIGHTNING0000100204390
1779-08-25T17:0033.52-71.4712222.6BERMUDAS74E111NE1/2E108.00-2SW-SEBESTRONG GALES AND SQUALLYHEAVY SEA FROM THE SCLOUDY0000000204391
1779-08-26T17:0034.20-69.9711122.6NEBE1/2E85.00-2ESESTRONG GALESHEAVY SWELL FROM THE SCLOUDY0000000204392
1779-08-27T17:0034.53-69.101564.6NEBE3/4E46.00-2SW-SSEGENTLE BREEZESHAZY0000000204393
1779-08-28T17:0034.87-68.481331.0BERMUDAS54E82N56E35.00-2SELIGHT AIRSCLEAR0000000204394
1779-08-29T16:0035.38-67.322212.6NEBE1/2E65.00-4SE-SWLIGHT BREEZESCLEAR0000000204395
1779-08-30T16:0035.87-66.181769.3BERMUDAS26E75NEBE1/2E62.00-4SW-SFRESH BREEZESCLEAR0000000204396
1779-08-31T16:0036.92-64.471549.3N53E105.00-4SSEFRESH BREEZESCLEAR, CLOUDY0000000204397
1779-09-01T16:0037.05-62.631549.3SEBE103.00-4SSEFRESH BREEZESCLOUDY0000000204398
1779-09-02T16:0037.68-61.20132.6S80E68.00-10NNELIGHT BREEZESCLEAR0000000204399
1779-09-03T16:0037.17-60.98399.3BERMUDAS30W109S62E67.00-6NEFRESH BREEZESCLOUDY0000000a trivial correction was made in this observation204400
1779-09-04T16:0037.50-59.651709.3N41E27.00-10NE, SFRESH BREEZESCLOUDY0000000204401
1779-09-05T16:0038.73-57.08348CORVON86E428S48E140.00-12SSW, NSQUALLS0000000204402
1779-09-06T16:0040.25-54.9030322.6S48E135.00-12SW, NWSTRONG GALESCLOUDY0000000204403
1779-09-07T16:0040.80-53.303486.7CORVOS89E389N66E80.00-12NMODERATEMODERATE0000000204404
1779-09-08T15:0040.58-51.68109.3SCILLYN74E683S80E75.00-13NNW-NNEFRESH BREEZES AND SQUALLYRAIN0100000204405
1779-09-09T15:0040.83-49.77109.3N74E90.00-13NW-NNEFRESH BREEZESCLEAR0000000204406
1779-09-10T15:0040.13-49.771111.0S42.00-13ENE-SEBELIGHT AIRS INCLINABLE TO CALM0000000204407
1779-09-11T15:0040.67-48.07347SCILLYN72E643ENE86.00-13SE-NPLEASANT0000000204408
1779-09-12T15:0040.70-47.35999.3S53E41.00-14NW-ESEFRESH BREEZESCLOUDY0000000204409
1779-09-13T15:0040.77-46.431891.0N50E49.00-14SE-SSWLIGHT AIRSCLOUDY0000000a trivial correction was made in this observation204410
1779-09-14T15:0042.08-44.42346N49E120.00-14SSE, NFINEMODERATE0000000204411
1779-09-15T15:0041.88-42.62319.3E4S81.00-14SW, NEFRESH BREEZESCLEAR0000000204412
1779-09-16T15:0041.83-41.5082.6SCILLYN72E538E1/4S50.00-15SE, N, NNELIGHT BREEZES0000000204413
1779-09-17T15:0041.87-40.6786.7SCILLYN72E529E1/4S50.00-15SE, N, NNEMODERATEFINE0000000204414
1779-09-18T15:0042.68-39.321162.6N51E78.00-19SELIGHT BREEZESCLOUDY0000000204415
1779-09-19T14:0043.83-37.3518422.6SCILLYN75E462N51E110.00-19SSWSTRONG GALESCLOUDY0000000204416
1779-09-20T14:0045.73-34.6520622.6N60E225.00-19SWSTRONG GALESCLEAR0000000204417
1779-09-21T14:0047.05-30.60261SCILLYN80E313NEBE186.00-20WBNPM STRONG GALES, AM FINECLEAR0000000204418
1779-09-22T14:0048.05-28.353256.7NEBE108.00-24NBWMODERATEFINE0000000204419
1779-09-23T14:0049.38-24.722919.3SCILLYN87E224N51E153.00-24NBW-NWFRESH BREEZESFINE0000000204420
1779-09-24T13:0049.50-19.5224622.6E1/2N220.00-24WSTRONG GALES AND SQUALLYSOME SHOWERS OF RAIN1100000204421
1779-09-25T13:0049.50-13.3220222.6SCILLYN84E74E220.00-23SWSTRONG GALES AND SQUALLYSOME SHOWERS OF RAIN1100000204422
1779-09-26T13:0049.52-8.18202E200.00-23SWFRESHCLOUDY0000000204423