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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 FERRET cruise from Hamoaze to Jamaica started at 1791-11-30 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749307, 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: 26.502121 * Median Longitude: -33.186364 * South-bound Latitude: 16.290000 * West-bound Longitude: -68.770000 * North-bound Latitude: 48.850000 * East-bound Longitude: -5.720000
Date/Time Start: 1791-11-30T12:00:00 * Date/Time End: 1792-01-03T17:00:00
Event(s):
Ferret_17911130_NMM_ADM/L/F169 * Latitude Start: 48.850000 * Longitude Start: -5.720000 * Latitude End: 17.700000 * Longitude End: -76.760000 * Date/Time Start: 1791-11-30T00:00:00 * Date/Time End: 1792-01-03T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ferret (Brig), Voyage: Hamoaze - Jamaica, 1st Observer: William Nowell (Captain), 2nd Observer: Walter Bathurst (1st Officer/Master), Company: Royal Navy, Other ship information: 10G 202BM
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
--1 If position is considered to be coastal (in port or near coastal disturbances)
10 CourseCourseCourse of the ship during the past 24 hours
11 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
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 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 CommentComment
26 IdentificationIDCLIWOC 2.1 line number
Size:
620 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)

-
(1 If position is considered t...)
10 
Course
(Course of the ship during the...)
11 
Distance [arbitrary units]
(Distance travelled during the...)
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 
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 
Comment
26 
ID
(CLIWOC 2.1 line number)
1791-11-30T12:0048.85-5.7231419.0USHANTS50:48E11S19W70.00-24NW, NNWPM STRONG GALES AND SQUALLY, AM FRESH GALE AND SQUALLY000000095342
1791-12-01T12:0047.47-7.4029319.0CAPE FINISTERES18:35W90S39W108.00-22WNW, NWFRESH GALESCLOUDY000000095343
1791-12-02T12:0046.28-7.2027126.8FINISTERES27:21W69S7E72.00-22WNWHARD GALES AND SQUALLY000000095344
1791-12-03T12:0046.38-7.4027127.4FINISTERES24:29W70N54W10.00-22WSW, WNWAT 8 MORE MODERATE, AM STRONG GALES, AT NOON EXCESSIVE HARD GALES AND SQUALLYAM HARD RAINPM A GREAT SWELL FROM THE SW, AT NOON A HEAVY SEA FROM THE SW010000095345
1791-12-04T13:0045.73-8.522026.7FINISTERES13:01W52S50W61.00-23NNE, SWAT 8 MORE MODERATE AT 8 THE GALE ABACKING, AM MODERATE BREEZESAT 8 A VERY HEAVY SEAAM CLOUDY000000095346
1791-12-05T13:0043.60-9.459.3FINISTERESEBS7-23FRESH BREEZESCLOUDY WEATHER000000095347
1791-12-06T13:0039.98-11.934719.0PORTO SANCTOS25:20W152S30W224.00-21ENEFRESH GALESCLOUDY000000095348
1791-12-07T13:0037.05-13.70259.3PORTO SANCTOS25:33W88S25:15W195.00-20NEFRESH BREEZESCLOUDY WEATHER000000095349
1791-12-08T13:0035.02-14.8839.3PORTO SANCTOS27:33W43S25:11W129.00-20NNEFRESH BREEZESCLOUDY WEATHER000000095350
1791-12-09T13:0033.07-15.98256.7MADEIRAS56:54W15S26:10W131.00-20NEMODERATE BREEZESCLOUDY WEATHER000000095351
1791-12-12T13:0031.33-17.90298DESEADAS69:10W844S17:27W73.00-17N, NNE, NWPM CALM000010095352
1791-12-13T13:0029.65-19.37286.7DESEADAS70:39W810S29:41W212.00-17NEMODERATE BREEZESCLOUDY WEATHER000000095353
1791-12-14T13:0027.40-21.28296.7DESEADAS73:19W771S36:30W167.00-16NEMODERATE BREEZESCLOUDY WEATHER000000095354
1791-12-15T14:0025.27-23.58319.3DESEADAS75:42W723S44:05W178.00-14NEFRESH BREEZESCLOUDY WEATHER000000095355
1791-12-16T14:0022.97-26.12319.3DESEADAS78:38W671S45W196.00-14NEFRESH BREEZESCLOUDY WEATHER000000095356
1791-12-17T14:0020.95-28.28579.3DESEADAS81:22W629S45W169.00-11ENEFRESH BREEZESCLOUDY WEATHER000000095357
1791-12-18T14:0019.68-30.40576.7DESEADAS80:14W583S57W141.00-11ENEMODERATE BREEZESCLOUDY WEATHER000000095358
1791-12-19T14:0018.76-32.42686.7DESEADAS84:46W545S68:21W139.00-11EBNMODERATE BREEZESFINE WEATHER000000095359
1791-12-20T14:0018.38-34.68716.7DESEADAS85:14W505S80:04W121.00-8EBNMODERATE BREEZESFINE WEATHER000000095360
1791-12-21T14:0018.04-35.71829.3DESEADAS85:14W441S84:8W176.00-8EFRESH BREEZES AND SQUALLYRAIN010000095361
1791-12-22T15:0017.83-41.10739.3DESEADAS84:55W378S87W191.00-6EBNFRESH BREEZESCLOUDY WEATHER000000095362
1791-12-23T15:0017.59-44.471099.3DESEADAS84:34W309S86:27W194.00-4ESEPM, AT 4 FRESH GALES AND SQUALLY, AT 8 FRESH BREEZESAT 4 A HEAVY SEA000010095363
1791-12-24T15:0017.40-47.63909.3DESEADAS83:55W248S87:11W183.000EFRESH BREEZESCLOUDY WEATHER000000095364
1791-12-25T15:0016.74-50.851019.3DESEADAS85:40W185S87:45W192.000EBSFRESH BREEZESCLOUDY WEATHER000000095365
1791-12-26T16:0016.40-53.461146.7DESEADAS87:07W185S89:17W154.001ESEMODERATE BREEZESCLEAR WEATHER0000000a trivial correction was made in this observation95366
1791-12-27T16:0016.41-55.601146.7DESEADAS85:26W92N88:50W126.001ESEMODERATE BREEZESCLEAR WEATHER000000095367
1791-12-28T16:0016.39-56.571361.0DESEADAS83:53W72N89W59.001SELIGHT AIRS INCLINABLE TO CALM000000095368
1791-12-29T16:0016.31-58.01486.7DESEADAS80:43W43S88:30W86.003ESE, NEMODERATE BREEZESFINE WEATHER000000095369
1791-12-30T16:0016.29-58.971381.0DESEADAS71:51W24N89W57.003NE, SELIGHT AIRSCLOUDY WEATHER000000095370
1791-12-31T16:0016.38-60.63829.3MONSERRATS67:33W19N85:22W99.003NE, EBNPM LIGHT AIRS, AM FRESH BREEZESPM RAINCLOUDY WEATHER010000095371
1792-01-01T16:0016.50-62.3048NORTH END OF MONSERRATNE313NEPM LIGHT AIRSCLOUDY WEATHER000000095372
1792-01-02T16:0017.25-64.87279.3ALBARVELLAN87:51W115S61W57.004NNEMODERATE BREEZES, AT NOON FRESH BREEZESCLEAR WEATHER000000095373
1792-01-03T17:0017.22-68.77849.3ALBARVELLAN83W48W224.005EBNFRESH BREEZESCLEAR WEATHER000000095374