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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 from York Factory to Gravesend started at 1781-09-24 [dataset]. Public Record Office, Kew, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752072, 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: 58.203125 * Median Longitude: -33.186250 * South-bound Latitude: 56.380000 * West-bound Longitude: -62.470000 * North-bound Latitude: 60.880000 * East-bound Longitude: 0.040000
Date/Time Start: 1781-09-24T16:00:00 * Date/Time End: 1781-10-09T12:00:00
Event(s):
Seahorse_17810924_PRO_BH1_1632 * Latitude Start: 61.320000 * Longitude Start: -64.020000 * Latitude End: 51.490000 * Longitude End: 1.170000 * Date/Time Start: 1781-09-24T00:00:00 * Date/Time End: 1781-10-09T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Seahorse, Voyage: York Factory - Gravesend, 1st Observer: William Christopher (Captain), Company: Hudson Bay Company
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 CommentCommentOther remarks, that were not possible to put in the other remark fields
12 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.
13 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.
14 Wind force descriptionWind force descrAll reported wind forces on this day
15 Present weatherwwWeather description
16 Precipitation descriptionPrecip descr
17 State of the sea descriptionState sea descr
18 ClearnessClearness
19 GustsGusts1 If wind gusts are reported
20 Precipitation/RainRain1 If rain was reported
21 FogFog1 If fog was reported
22 Snow typeSnow1 If snow was reported
23 ThunderThunder1 If thunder and or lightning was reported
24 HailHail1 If hail was reported
25 Sea iceSea ice1 If sea-ice or icebergs were reported
26 IdentificationIDCLIWOC 2.1 line number
Size:
260 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 
Comment
(Other remarks, that were not ...)
12 
Decl [deg]
(It is generally accepted by t...)
13 
Wind dir descr
(All reported wind directions ...)
14 
Wind force descr
(All reported wind forces on t...)
15 
ww
(Weather description)
16 
Precip descr
17 
State sea descr
18 
Clearness
19 
Gusts
(1 If wind gusts are reported)
20 
Rain
(1 If rain was reported)
21 
Fog
(1 If fog was reported)
22 
Snow
(1 If snow was reported)
23 
Thunder
(1 If thunder and or lightning...)
24 
Hail
(1 If hail was reported)
25 
Sea ice
(1 If sea-ice or icebergs were...)
26 
ID
(CLIWOC 2.1 line number)
1781-09-24T16:0060.88-62.47522.6RESOLUTIONNEBN9S65E73.00MIDDAY AN ISLE OF ICE-40SE, SEBS, VARIABLE, EBN, ENE, NEFRESH BREEZES AND SQUALLY, STIFF GALESCLOUDY0001001234229
1781-09-25T16:0060.18-56.2429822.6S78E193.00PASSED AN ISLE OF ICE-40NEBN, NNE, NBW, NWBN, NW, NNWSTRONG GALES AND SQUALLYSHOWERS1001001234230
1781-09-26T15:0058.52-50.94287S58E188.00-39NNW, NWBNSTRONG GALES, SQUALLYSHOWERS1001000234231
1781-09-27T15:0057.08-46.913076.7S56E154.00-31NWBN, NNWSTIFF GALES AND SQUALLY, MODERATECLOUDY0001000234232
1781-09-28T15:0056.97-43.293296.7S79E118.00-31NWBN, NNW, VARIABLE, NMODERATESHOWERYFINE AND CLOUDY1000100234233
1781-09-29T15:0056.75-40.24719.3S83E111.00-30VARIABLE, NNE, NEBN, NE, EBN, EBSFRESH BREEZES AND STIFF GALESRAINCLEAR AND CLOUDY0100000234234
1781-09-30T15:0056.38-40.013622.6S70E23.00-30E, VARIABLESTRONG GALES AND SQUALLY, ALMOST CALM, LIGHT BREEZESRAIN0110000234235
1781-10-01T15:0056.45-39.673622.6N83E32.00-30ESE, NE, NNE, NEBN, NE, VARIABLELITTLE WIND, ALMOST CALM, LIGHT BREEZES, FRESH GALES, EASY BREEZESRAINCONFUSED SEA0110000234236
1781-10-02T15:0056.82-38.192859.3N58E47.00-30VARIABLE, NNE, N, NNW, NWALMOST CALM, LIGHT AIRS, EASY BREEZE, FRESH BREEZERAINCLOUDY0100000234237
1781-10-03T14:0057.52-32.69269N75E180.00-35NNW, NW, NWBWSTIFF GALES, STRONG GALES, MODERATE, HARD SQUALLSRAINCLOUDY0100000234238
1781-10-04T14:0058.67-27.51247N67E187.00-34NW, NWBW, WNW, VARIABLE, WBNSTRONG GALES AND SQUALLY, MODERATE, STIFF BREEZESSMALL DROPS OF RAINCLOUDY0100000234239
1781-10-05T13:0059.00-22.261832.6N82E148.00-31WBN, WNW, VARIABLE, SWBSSTIFF GALES, FRESH GALES, EASY BREEZEDARKSHOWERS OF RAINCLOUDY AND CLEAR1100000234240
1781-10-06T13:0059.20-15.89196N85E196.00-29SSW, SWBS, SWSTIFF GALES, STRONG GALES, SQUALLYRAINHAZY, CLOUDY0100000234241
1781-10-07T13:0059.07-10.0119822.6BLUFF OF LOWESE40-27SWSTIFF GALES0000000234242
1781-10-08T12:0058.94-4.70-250000000234243
1781-10-09T12:0058.820.0420222.6N88E162.00-23WSW, SSW, SWFRESH GALES, STIFF GALESRAINCLEAR AND CLOUDY0100000234244