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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 CYCLOPS cruise from Crookhaven to Halifax started at 1781-06-18 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.748020, 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: 58.243846 * Median Longitude: -18.014615 * South-bound Latitude: 55.720000 * West-bound Longitude: -24.420000 * North-bound Latitude: 59.750000 * East-bound Longitude: -9.240000
Date/Time Start: 1781-06-18T13:00:00 * Date/Time End: 1781-06-30T14:00:00
Event(s):
Cyclops_17810618_NMM_ADM/L/C264 * Latitude Start: 57.980000 * Longitude Start: -9.240000 * Latitude End: 43.400000 * Longitude End: -63.030000 * Date/Time Start: 1781-06-18T00:00:00 * Date/Time End: 1781-06-30T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Cyclops (6th Rate Frigate), Voyage: Crookhaven - Halifax, 1st Observer: John Christian (Captain), Company: Royal Navy, Other ship information: 28G 593BM
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 IdentificationIDCLIWOC 2.1 line number
Size:
258 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 
ID
(CLIWOC 2.1 line number)
1781-06-18T13:0057.98-9.24869.3ST KILDAS72E11N72W35.00-27S, SSW, SWBS, ESEFIRST PART MODERATE, MIDDLE SQUALLY, LATTER FRESH BREEZESFIRST PART CLOUDY, LATTER HAZY000000047975
1781-06-19T13:0058.12-10.842091.0ST KILDAS75:10E25N81W52.00-27WNW, SWBW, SW, SWBS, SWBWFIRST PART MODERATE, MIDDLE AND LATTER LIGHT AIRSTHICK FOGGY WEATHERFIRST PART RAIN011000047976
1781-06-20T13:0057.80-13.302076.7ST KILDAE151S76W81.00-29W, WSW, SWBS, SWBW, SWBWFIRST AND LATTER PARTS MODERATE, MIDDLE FRESH BREEZESLARGE SWELL FROM THE SWFIRST AND LATTER PARTS CLOUDY WEATHER, MIDDLE HAZY000000047977
1781-06-21T13:0058.18-14.9720719.0ST KILDAS85:36E69N66W58.00-29WSW, SW, SWBW, WBS, SWBWFIRST AND MIDDLE PARTS FRESH BREEZES, LATTER FRESH GALESLARGE SWELL FROM THE SWFIRST AND MIDDLE HAZY WEATHER000000047978
1781-06-22T13:0058.88-16.3723019.0ST KILDAS75:10E85N47W59.00-29WSW, SWBW, WBSFIRST AND MIDDLE FRESH BREEZES, LATTER FRESH GALESLATTER FOGGYFIRST AND MIDDLE CLOUDY WEATHER001000047979
1781-06-23T13:0058.90-16.552191.0ST KILDAS75:07E91N49W65.00-29W, WNW, VARIABLE, WSWSTRONG GALES IN THE FIRST PART MIDDLE AND LATTER LIGHT AIRS INCLINABLE TO CALMRAIN IN THE MIDDLE PARTHAZY010000047980
1781-06-24T13:0058.65-18.6436219.0ST KILDAS80:53E107S77W66.00-31SSE, SWBS, VARIABLEFIRST PART LIGHT AIRS AND VARIABLE, MIDDLE AND LATTER FRESH GALESFIRST PART RAINMIDDLE AND LATTER THICK HAZY WEATHER010000047981
1781-06-25T13:0059.00-20.4218315.4ST KILDAS79:06E127N87W120.00-31SW, W, WBS, SWBSFIRST PART FRESH GALES, MIDDLE STRONG GALES AND SQUALLY, LATTER MODERATE GALESMIDDLE RAINMIDDLE HEAVY SEA FROM THE SW QUARTERCLOUDY010000047982
1781-06-26T13:0059.75-21.152289.3ST KILDAS73:23E137N26W50.00-31W, WBN, WNW, NWBN, WBSFIRST PART FRESH GALES, MIDDLE AND LATTER FRESH BREEZESMIDDLE AND LATTER RAIN AT TIMESCLOUDY010000047983
1781-06-27T13:0058.88-21.822846.7ST KILDAS81:17E141S21W57.00-31NWBW, WNW, SWBW, NWFIRST PART SQUALLY, MIDDLE AND LATTER MODERATE BREEZESFIRST PART RAINMIDDLE AND LATTER CLOUDY WEATHER010000047984
1781-06-28T14:0058.28-23.601939.3ST KILDAS86:30E158S56W67.00-32W, NWBW, WNW, NWBN, SWFIRST AND LATTER PARTS FRESH BREEZES, MIDDLE FRESH BREEZES AND SQUALLYLARGE HEAD SEA FROM THE SOUTHWESTMIDDLE AND LATTER CLOUDY000000047985
1781-06-29T14:0057.03-22.872659.3ST KILDAN84:17E154S16E81.00-28NWBW, WNW, WNWFIRST AND MIDDLE PARTS FRESH BREEZES AND VARIABLE, LATTER FRESH BREEZES AND SQUALLYFIRST AND MIDDLE SHOWERS OF RAIN110000047986
1781-06-30T14:0055.72-24.421759.3ST KILDAN76:42E178S33W95.00-28NE, NNW, SSWFIRST PART LIGHT AIRS, MIDDLE AND LATTER FRESH BREEZESFIRST PART HAZY, MIDDLE AND LATTER CLOUDY000000047987