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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 SEAFORD cruise from Caicos to Uk started at 1775-02-26 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752052, 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: 33.140714 * Median Longitude: -56.060714 * South-bound Latitude: 23.000000 * West-bound Longitude: -71.520000 * North-bound Latitude: 47.870000 * East-bound Longitude: -23.670000
Date/Time Start: 1775-02-26T17:00:00 * Date/Time End: 1775-03-28T14:00:00
Event(s):
Seaford_17750226_NMM_ADM/L/S205 * Latitude Start: 23.000000 * Longitude Start: -71.320000 * Latitude End: 49.450000 * Longitude End: -5.630000 * Date/Time Start: 1775-02-26T00:00:00 * Date/Time End: 1775-03-28T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Seaford (6th Rate Frigate), Voyage: Caicos - Uk, 1st Observer: Richard Collins (Captain), 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 ClearnessClearness
16 GustsGusts1 If wind gusts are reported
17 Precipitation/RainRain1 If rain was reported
18 FogFog1 If fog was reported
19 Snow typeSnow1 If snow was reported
20 ThunderThunder1 If thunder and or lightning was reported
21 HailHail1 If hail was reported
22 Sea iceSea ice1 If sea-ice or icebergs were reported
23 IdentificationIDCLIWOC 2.1 line number
Size:
265 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 
Clearness
16 
Gusts
(1 If wind gusts are reported)
17 
Rain
(1 If rain was reported)
18 
Fog
(1 If fog was reported)
19 
Snow
(1 If snow was reported)
20 
Thunder
(1 If thunder and or lightning...)
21 
Hail
(1 If hail was reported)
22 
Sea ice
(1 If sea-ice or icebergs were...)
23 
ID
(CLIWOC 2.1 line number)
1775-02-26T17:0023.00-71.32719.3CAICOSS17W27N17E82.003E1/2S, E1/2N, ENE, E, ENEFRESH BREEZESFAIR0000000233450
1775-02-27T17:0024.70-71.52486.7CAICOSS6W61N6W103.003EBN, NEBE, NEMODERATE BREEZESFAIR0000000233451
1775-02-28T17:0025.72-71.47936.7CAICOSS4W82N9E61.003NEBE, ENE, EBN, EFIRST AND LATTER PARTS MODERATE, MIDDLE SQUALLYMIDDLE RAINFIRST AND LATTER PARTS HAZY0100000233452
1775-03-01T17:0026.27-70.181166.7CAICOSS17W97N62E78.003CALM, ENE, EBN, E, ESEFIRST PART CALM, MIDDLE AND LATER MODERATEMIDDLE AND LATTER CLOUDY0000000233453
1775-03-02T17:0026.80-68.771492.6BERMUDASN39E145N67E83.003SSE, SEBE, SEBSLIGHT BREEZESHAZY0000000233454
1775-03-03T16:0026.77-67.45340BERMUDASN32E132N88E70.002SEBS, CALM, NBW, N, NBE, NNWSQUALLYRAIN0100000233455
1775-03-04T16:0027.67-67.13338BERMUDASN34E114N18E56.000NBW, NW, NWBN, NNWFIRST AND MIDDLE PARTS MODERATE, LATTER SQUALLYFIRST AND MIDDLE PARTS SOME SHOWERS OF RAINFIRST AND MIDDLE PARTS CLOUDY1100000233456
1775-03-05T16:0029.58-66.9290BERMUDASN46E82N6E116.000EBN, ENE, ESQUALLY0000000233457
1775-03-06T16:0031.40-66.021016.7BERMUDASN68E53N15E113.000E1/2N, E, EBSFIRSTAND MIDDLE PARTS FRESH GALES, LATTER MODERATEHAZY0000000233458
1775-03-07T16:0032.28-64.801586.7BERMUDASN83E23N56E96.000SEBE, SE, SBE, SSEMODERATECLEAR0000000233459
1775-03-25T14:0047.28-25.801266.7CAPE CLEARN68E212N48E31.00-20SSE, SEBS, SE, CALM, VARIABLE, SEBSFIRST PART LIGHT AIRS, MIDDLE AND LATTER MODERATEFIRST PART HAZY, MIDDLE AND LATTER CLOUDY0000000233460
1775-03-26T14:0047.87-25.353621.0CAPE CLEARN70E200N23E33.00-23VARIABLE, E, VARIABLEFIRST ART LIGHT BREEZES, LATTER LIGHT AIRSMIDDLE RAINFIRST AND MIDDLE PARTS HAZY0100000233461
1775-03-27T14:0047.30-24.45592.6CAPE CLEARN66E196S46E50.00-20EBS, E, ESE, VARIABLE, EBNLIGHT BREEZESHAZY0000000233462
1775-03-28T14:0047.33-23.673511.0CAPE CLEARN65E185N86E32.00-20ENE, CALM, VARIABLE, NBEFIRST PART LIGHT AIRS AND VARIABLE, MIDDLE AND LATTER LIGHT AIRSMIDDLE AND LATTER HAZY0000000233463