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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 LACTIF cruise from Québec to Brest started at 1755-08-25 [dataset]. Centre d'Accueil et de Recherche des Archives Nationales, Paris, France, PANGAEA, https://doi.org/10.1594/PANGAEA.750290, 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: 48.697895 * Median Longitude: -25.227368 * South-bound Latitude: 47.550000 * West-bound Longitude: -49.750000 * North-bound Latitude: 52.070000 * East-bound Longitude: -5.390000
Date/Time Start: 1755-08-25T00:00:00 * Date/Time End: 1755-09-21T12:00:00
Event(s):
LActif_17550825_COTE_4/JJ/13 * Latitude Start: 48.750000 * Longitude Start: -63.100000 * Latitude End: 48.220000 * Longitude End: -4.760000 * Date/Time Start: 1755-08-25T00:00:00 * Date/Time End: 1755-09-21T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: L'Actif, Voyage: Québec - Brest, 1st Observer: De Caumont (Capitan)
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
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.
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.
Wind force descriptionWind force descrAll reported wind forces on this day
Present weatherwwWeather description
10 Precipitation descriptionPrecip descr
11 State of the sea descriptionState sea descr
12 GustsGusts1 If wind gusts are reported
13 Precipitation/RainRain1 If rain was reported
14 FogFog1 If fog was reported
15 Snow typeSnow1 If snow was reported
16 ThunderThunder1 If thunder and or lightning was reported
17 HailHail1 If hail was reported
18 Sea iceSea ice1 If sea-ice or icebergs were reported
19 IdentificationIDCLIWOC 2.1 line number
Size:
359 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Date/Time

Latitude

Longitude

dd [deg]

ff [m/s]

Decl [deg]

Wind dir descr

Wind force descr

ww
10 
Precip descr
11 
State sea descr
12 
Gusts
13 
Rain
14 
Fog
15 
Snow
16 
Thunder
17 
Hail
18 
Sea ice
19 
ID
1755-08-25T00:00225AU SOETAND PLUS FORTE0000000143331
1755-08-26T00:00450.0DU NECALMEPLUIE0100000143332
1755-08-27T00:004515.4CONTINUEÉ AU NEPRESQUE CALME, GROS FRAIS, ET BON PETITE FRAIS0000000143333
1755-08-28T00:003151.0DU SSE AU NOPRESQUE CALME0000000143334
1755-08-29T00:00293DU S AU ONOBEAU TEMP0000000143335
1755-08-30T00:001134.6DU NE AU ESEPETITE FRAIS0000000143336
1755-08-31T00:003384.6DU ONO AU NNOPETITE FRAISBRUMEUX0000000143337
1755-09-01T00:0029312.3AU ONO ET AU NOFRAIS0000000143338
1755-09-02T15:0051.73-49.752049.3-21DU ONO AU SOBON FRAIS0000000143339
1755-09-03T15:0052.07-45.721599.3-21DU SSO AU SBON FRAIS0000000143340
1755-09-04T15:0050.62-41.72340-20DU N ET NNE0000000143341
1755-09-05T15:0049.47-37.6234015.4-20AU N ET NEGROS FRAIS0000000143342
1755-09-06T14:0048.75-36.99714.6-19DU NE AU EPETITE VENT0000000143343
1755-09-07T14:0048.22-35.79714.6-19DU NE AU EPETITE FRAIS0000000143344
1755-09-08T14:0047.83-33.89264.6-19DU NE ET ENEPETITE VENT0000000143345
1755-09-09T14:0047.55-33.0526-19DU NE ET ETRES PETITE FREQUE CALME0000000143346
1755-09-10T14:0048.33-31.351844.6-19DU SSE AU SSOPETITE FRAIS0000000143347
1755-09-11T14:0048.28-27.351849.3-19AU SSOBON FRAIS0000000143348
1755-09-12T14:0047.98-22.551849.3-19AU SSO ET AU SOBON FRAISBEAU TEMP0000000143349
1755-09-13T13:0048.32-18.371849.3-19AU SSOBON FRAISBELLE0000000143350
1755-09-14T13:0048.47-15.891619.3-19AU S ET SSOBON FRAISGROSSE0000000143351
1755-09-15T13:0048.52-13.341619.3-19AU S ET SSOBON FRAISGROSSE0000000143352
1755-09-16T13:0047.62-11.001859.3-18AU SSOBON FRAIS0000000143353
1755-09-17T13:0047.92-7.871626.7-18AU SBON PETITE FRAIS0000000143354
1755-09-18T12:0047.92-6.141624.6-18AU SPETITE FRAISBRUMEAUXGROSSE0000000143355
1755-09-19T12:0047.88-5.3914012.3-18DU S AU SSEFRAISCALME0000000143356
1755-09-20T12:0047.78-5.541404.6-18DU SAU SSEPETITE FRAIS0000000143357
1755-09-21T12:00-4.752700.0DU OCALME0000000143358