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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 AMBUSCADE cruise from Port Royal to Spithead started at 1801-12-21 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747347, 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: 37.376071 * Median Longitude: -46.707857 * South-bound Latitude: 22.530000 * West-bound Longitude: -70.670000 * North-bound Latitude: 49.430000 * East-bound Longitude: -6.080000
Date/Time Start: 1801-12-21T17:00:00 * Date/Time End: 1802-01-17T12:00:00
Event(s):
Ambuscade_18011221_NMM_ADM/L/A111 * Latitude Start: 17.870000 * Longitude Start: -76.830000 * Latitude End: 50.680000 * Longitude End: -0.960000 * Date/Time Start: 1801-12-21T00:00:00 * Date/Time End: 1802-01-17T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ambuscade (5th Rate Frigate), Voyage: Port Royal Jamaica - Spithead, 1st Observer: John Colville (Captain), Company: Royal Navy, Other ship information: 36G, 905BM
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 Present weatherwwWeather description
15 Precipitation descriptionPrecip descr
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 CommentComment
24 IdentificationIDCLIWOC 2.1 line number
Size:
512 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 
ww
(Weather description)
15 
Precip descr
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 
Comment
24 
ID
(CLIWOC 2.1 line number)
1801-12-21T17:0022.53-70.672JUNKS ISLANDSSW21N84E110.002WNW, NNW, NBW, NPM LIGHT BREEZESPM CLEAR00000009098
1801-12-22T17:0023.07-67.8792SW END OF BERMUDAN31E240N58E61.002EPM FRESH BREEZESPM CLOUDY00000009099
1801-12-23T17:0025.52-68.3092SW END OF BERMUDAN31E180N30E169.002EPM FRESH BREEZESPM CLEAR00000009100
1801-12-24T16:0027.18-65.95362SW END OF BERMUDAN22E320N52E161.001VARIABLEPM FRESH BREEZESPM CLEAR00000009101
1801-12-25T16:0028.55-66.2043SW END OF BERMUDAN30E260N9W84.00-2NEPM FRESH BREEZESPM CLOUDY00000009102
1801-12-26T16:0029.27-65.70336SW END OF BERMUDAN31E68N31E50.00-2NE, NNWPM LIGHT BREEZESPM CLEAR00000009103
1801-12-27T16:0029.58-65.0388SW END OF BERMUDAN24E57N65E44.00-2N, EPM SQUALLY WEATHER00000009104
1801-12-28T16:0029.60-64.82362SW END OF BERMUDAN21E55N85E11.00-2VARIABLEPM LIGHT AIRS00000009105
1801-12-29T16:0030.68-62.902019.3SW END OF BERMUDAN24W33NEBE120.00-2SE, SSWAM FRESH BREEZESAM CLOUDY00000009106
1801-12-30T16:0031.93-59.87165SW END OF BERMUDAN86W72N64E174.00-4SBW, SBEPM FRESH BREEZESPM CLEAR00000009107
1801-12-31T16:0033.37-58.53116LIZARDN68E887N38E109.00-8SSW, WNW, SEBEPM FRESH BREEZESPM CLEAR00000009108
1802-01-01T16:0034.78-55.023289.3LIZARDN68E813N64E195.00-10N, NW, NNWPM MODERATE, AM FRESH BREEZESPM CLOUDY00000009109
1802-01-02T15:0035.13-52.40359LIZARDN67E753N80E130.00-12NBW, NBE, NNE, NBEPM FRESH GALESPM CLOUDY00000009110
1802-01-03T15:0035.00-50.3331422.6LIZARDN66E733S68E102.00-12NBE, N, NWBNPM STRONG BREEZES, AT NOON STRONG GALESPM CLOUDYAT NOON RAIN01000009111
1802-01-04T15:0035.85-50.07362CORVON76EN70E148.00-12VARIABLEPM STRONG BREEZESPM CLOUDY00000009112
1802-01-05T15:0037.33-48.43123CORVON80E273N41E119.00-12ESE, SEPM STRONG BREEZESPM CLOUDY0000000a trivial correction was made in this observation9113
1802-01-06T15:0039.90-45.1312822.6LIZARDN70E587NE218.00-18SEBSPM FRESH GALES, AT NOON STRONG GALES00000009114
1802-01-07T15:0042.10-41.8030719.0LIZARDN73E540N47E220.00-19NNW, NWBNPM FRESH GALES AND SQUALLY, AT NOON FRESH GALESAT NOON CLOUDY0000000a trivial correction was made in this observation9115
1802-01-08T15:0043.78-37.672929.3LIZARDN74E450N61E208.00-24NWPM FRESH GALES AND SQUALLY, AT NOON FRESH BREEZESAT NOON CLOUDY WEATHER00000009116
1802-01-09T14:0045.10-35.02325LIZARDN77E430N56E138.00-24NNW, NW, NEBN, NBWPM MODERATEPM CLOUDY00000009117
1802-01-10T14:0047.05-31.0231319.0LIZARDN81E363N55E204.00-25NWBN, NNWPM FRESH GALES, AM FRESH GALES AND SQUALLYPM CLOUDY00000009118
1802-01-11T14:0046.78-28.87362LIZARDN79E330S80E89.00-25VARIABLEPM FRESH BREEZESPM CLOUDY00000009119
1802-01-12T14:0047.23-28.603620.0LIZARDN80E313N22E29.00-25VARIABLEPM MODERATE BREEZES, AM LIGHT BREEZES, AT NOON CALMPM CLOUDY00000009120
1802-01-13T14:0047.63-27.721626.7LIZARDN81E296NEBE43.00-29SSW, SBWPM CALM, AT NOON PLEASANT BREEZESPM CLEAR, PM CLOUDY WEATHER00000009121
1802-01-14T14:0049.43-23.90196LIZARDN87:33E240N61E211.00-29S, SWPM LIGHT BREEZES00000009122
1802-01-15T13:0049.43-17.90186LIZARDN87E164S89E232.00-28SWBSPM FRESH BREEZESPM CLOUDY00000009123
1802-01-16T13:0049.33-12.022109.3LIZARDN81E85S89E225.00-26SWBWPM FRESH BREEZES, AT 8 FRESH BREEZES AND SQUALLYPM CLOUDYAT 8 RAIN01000009124
1802-01-17T12:0049.40-6.08200LIZARDN45E15N89E232.00-25SWPM FRESH BREEZES AND SQUALLY00000009125