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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 SEAHORSE cruise started at 1756-06-28 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752057, 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: 46.457692 * Median Longitude: -51.736154 * South-bound Latitude: 45.780000 * West-bound Longitude: -52.750000 * North-bound Latitude: 46.870000 * East-bound Longitude: -50.540000
Date/Time Start: 1756-06-28T15:00:00 * Date/Time End: 1756-07-10T16:00:00
Event(s):
Seahorse_17560628_NMM_ADM/L/S218 * Latitude Start: 46.680000 * Longitude Start: -50.540000 * Latitude End: 46.770000 * Longitude End: -52.750000 * Date/Time Start: 1756-06-28T00:00:00 * Date/Time End: 1756-07-10T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Seahorse (6th Rate Frigate), 1st Observer: Hugh Palliser (Captain), 2nd Observer: Charles Antrobus (1st Officer/Master), Company: Royal Navy, Other ship information: 24G. 504BM
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 ClearnessClearness
15 GustsGusts1 If wind gusts are reported
16 Precipitation/RainRain1 If rain was reported
17 FogFog1 If fog was reported
18 Snow typeSnow1 If snow was reported
19 ThunderThunder1 If thunder and or lightning was reported
20 HailHail1 If hail was reported
21 Sea iceSea ice1 If sea-ice or icebergs were reported
22 IdentificationIDCLIWOC 2.1 line number
Size:
247 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 
Clearness
15 
Gusts
(1 If wind gusts are reported)
16 
Rain
(1 If rain was reported)
17 
Fog
(1 If fog was reported)
18 
Snow
(1 If snow was reported)
19 
Thunder
(1 If thunder and or lightning...)
20 
Hail
(1 If hail was reported)
21 
Sea ice
(1 If sea-ice or icebergs were...)
22 
ID
(CLIWOC 2.1 line number)
1756-06-28T15:0046.68-50.542436.7ST JOHNSN37:00W48N32:00E19.00-16SWBS, SSE, WBSMODERATEHAZY0000000233619
1756-06-29T15:0046.28-50.662326.7ST JOHNSN38:31W43N22:30W15.00-16WNW, WSWMODERATEHAZY0000000233620
1756-06-30T15:0046.00-50.712776.7ST JOHNSN33:23W48S11:15W19.00-16SW, NWBN, WNWMODERATEHAZY0000000233621
1756-07-01T15:0046.37-51.6423219.0ST JOHNSN21:48W35N62:00W47.00-16WNW, WSWFRESH GALESFOGGY0010000233622
1756-07-02T15:0046.70-52.1522015.4ST JOHNSN12:10W27N50:00W32.00-16WSW, SW, SWBWMODERATE GALESHAZY0000000233623
1756-07-03T15:0046.60-51.612546.7ST JOHNSN23:55W30S73:00E22.00-16SWBW, WMODERATEHAZY0000000233624
1756-07-04T15:0045.78-51.5727719.0ST JOHNSN15:45W46S47.00-16WBN, WNWFRESH GALESHAZY0000000233625
1756-07-05T15:0046.07-52.102096.7ST JOHNSN7:00W39N56:00W34.00-16WSW, SWMODERATEHAZY0000000233626
1756-07-06T15:0046.87-52.211982.6ST JOHNSN6:47W23N7:00W49.00-16SSW, SWBSLITTLE WINDSHAZY0000000233627
1756-07-07T15:0046.75-51.931982.6ST JOHNSN13:00W26S55:00E13.00-16SW, SWBSLITTLE WINDSHAZY0000000233628
1756-07-08T15:0046.63-52.262326.7ST JOHNSN1:54W27S67:00W18.00-16SW, S, SSW, WSWMODERATETHICK FOGGY WEATHER0010000233629
1756-07-09T15:0046.45-52.442099.3ST JOHNSN3:45E31S39:00W15.00-16SWFRESH BREEZESFOGGY0010000233630
1756-07-10T16:0046.77-52.7522115.4ST JOHNSN15:15E25N38:00W25.00-15SWBWMODERATE GALESFOGGY0010000233631