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García-Herrera, Ricardo; Können, Gunther P; Wheeler, Dennis A; Koek, Frits B (2010): Meteorological observations during AMBUSCADE cruise from Port Royal to Plymouth started at 1798-02-07. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747345, 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). 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: 37.620000 * Median Longitude: -57.337297 * South-bound Latitude: 24.230000 * West-bound Longitude: -80.430000 * North-bound Latitude: 51.470000 * East-bound Longitude: -17.200000
Date/Time Start: 1798-02-07T17:00:00 * Date/Time End: 1798-03-15T13:00:00
Event(s):
Ambuscade_17980207_NMM_ADM/L/A111 * Latitude Start: 17.870000 * Longitude Start: -76.830000 * Latitude End: 50.299000 * Longitude End: -4.150000 * Date/Time Start: 1798-02-07T00:00:00 * Date/Time End: 1798-03-15T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ambuscade (5th Rate Frigate), Voyage: Port Royal Jamaica - Plymouth, 1st Observer: Henry Jenkins (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.
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
DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
10 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.
11 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.
12 Wind force descriptionWind force descrAll reported wind forces on this day
13 Present weatherwwWeather description
14 Precipitation descriptionPrecip descr
15 GustsGusts1 If wind gusts are reported
16 Precipitation/RainRain1 If rain was reported
17 FogFog1 If fog was reported
18 Snow typeSnow1 If snow was reported
19 ThunderThunder1 If thunder and or lightning was reported
20 HailHail1 If hail was reported
21 Sea iceSea ice1 If sea-ice or icebergs were reported
22 IdentificationIDCLIWOC 2.1 line number
Size:
662 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...)

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...)

Distance [arbitrary units]
(Distance travelled during the...)
10 
Decl [deg]
(It is generally accepted by t...)
11 
Wind dir descr
(All reported wind directions ...)
12 
Wind force descr
(All reported wind forces on t...)
13 
ww
(Weather description)
14 
Precip descr
15 
Gusts
(1 If wind gusts are reported)
16 
Rain
(1 If rain was reported)
17 
Fog
(1 If fog was reported)
18 
Snow
(1 If snow was reported)
19 
Thunder
(1 If thunder and or lightning...)
20 
Hail
(1 If hail was reported)
21 
Sea ice
(1 If sea-ice or icebergs were...)
22 
ID
(CLIWOC 2.1 line number)
1798-02-07T17:0024.23-80.43362DOUBLE HEADED KEYSS60E56VARIABLEPM LIGHT BREEZESPM CLEAR00000009022
1798-02-08T17:0026.40-79.81231LAND KEYS75E10N2E191.006SWPM MODERATE BREEZESPM FINE00000009023
1798-02-09T17:0027.05-79.55362NW END OF MARANELLAN3E14N16E41.006VARIABLEPM MODERATE BREEZESPM FINE00000009024
1798-02-10T17:0027.30-79.7617NW END OF MARANELLAN17E96NBEPM STRONG GALES AND SQUALLYPM HEAVY RAIN01000009025
1798-02-11T17:0028.58-80.0327NW END CAPE CANAVERALS51W8N25W68.004NNEPM FRESH BREEZESPM FINE WEATHER00000009026
1798-02-12T17:0029.77-79.48319SW END OF BERMUDAN277N44E59.004NWPM FRESH BREEZESPM CLEAR00000009027
1798-02-13T17:0030.47-78.48319SW END OF BERMUDAN80E105N32E59.004NWPM LIGHT BREEZESPM CLEAR00000009028
1798-02-14T17:0031.87-76.46295SW END OF BERMUDAN88E200N43E118.002WNWPM FRESH GALESPM CLOUDY00000009029
1798-02-15T17:0031.83-74.30227SW END OF BERMUDAN88E171N89E100.002SWPM FRESH GALESPM CLOUDY00000009030
1798-02-16T17:0031.92-72.45248SW END OF BERMUDAN88E147N82E38.000WSWPM FRESH BREEZESPM CLEAR00000009031
1798-02-17T17:0032.51-72.35362-3VARIABLEPM STRONG BREEZESPM HEAVY RAIN01000009032
1798-02-18T17:0033.10-72.25155SW END OF BERMUDAS86E164N84E71.00-3SSEPM FRESH GALESPM CLOUDY00000009033
1798-02-19T17:0032.93-71.48245SW END OF BERMUDAS87E152N80.00-3WSWPM FRESH GALESPM CLOUDY00000009034
1798-02-20T17:0033.57-70.92357SW END OF BERMUDAS84E181N38E46.00-3NPM FRESH GALESPM CLOUDY00000009035
1798-02-21T17:0034.17-69.8565SW END OF BERMUDAS78E164N56E63.00-3ENEPM FRESH GALESPM CLEAR00000009036
1798-02-22T17:0034.95-68.33155CORVON81E588N56E89.00-3SSEPM MODERATE BREEZESPM CLOUDY00000009037
1798-02-23T16:0035.62-66.58220CORVON82E544N66E97.00-5SWPM FRESH GALESPM CLOUDY00000009038
1798-02-24T16:0035.87-65.97333CORVON82E536N64E34.00-5NNWPM FRESH BREEZESPM CLOUDY00000009039
1798-02-25T16:0037.43-64.93220CORVON85E528N52E168.00-5SWPM LIGHT BREEZESPM CLOUDY00000009040
1798-02-26T16:0038.05-61.47191CORVON86E460N78E168.00-12SSWPM FRESH GALESPM CLOUDY00000009041
1798-02-27T16:0038.33-58.43258CORVON86E400N81E145.00-12WPM STRONG GALES AND SQUALLYPM SHOWERS OF RAIN11000009042
1798-02-28T16:0039.08-54.58362CORVON88E336N77E189.00-14VARIABLEPM STRONG GALES AND SQUALLYPM SHOWERS OF RAIN11000009043
1798-03-01T15:0039.83-50.97277CORVOS89E262N1/4E173.00-16WNWPM STRONG GALES AND SQUALLY00000009044
1798-03-02T15:0039.95-49.03299CORVOS89E235N80E89.00-16NWPM FRESH GALESPM CLOUDY00000009045
1798-03-03T15:0040.25-46.98298CORVOS87E213N70E96.00-17NWPM MODERATE BREEZESPM CLOUDY00000009046
1798-03-04T15:0041.23-44.55141CORVOS82E203N62E125.00-17SSEPM FRESH GALESPM HAZYDRIZZLING RAIN01000009047
1798-03-05T15:0042.20-44.55362CORVOS77E213N58.00-17VARIABLEPM MODERATE BREEZESPM HAZYRAIN01000009048
1798-03-06T15:0042.60-42.60349CAPE CLEARN69E472M75E90.00-22NBEPM MODERATE BREEZESPM CLOUDY00000009049
1798-03-07T15:0043.77-39.78292CAPE CLEARN70E424N63E140.00-23NWPM FRESH BREEZESPM CLOUDY00000009050
1798-03-08T15:0043.97-38.23337CAPE CLEARN69E408N83E68.00-23NPM FRESH BREEZESPM CLOUDY00000009051
1798-03-09T14:0045.22-36.03122CAPE CLEARN71E368N51E120.00-24SEBSPM STRONG GALESPM HAZYRAIN01000009052
1798-03-10T14:0046.53-33.08179CAPE CLEARN73E312N57E146.00-24SSWPM FRESH GALESPM CLOUDY00000009053
1798-03-11T14:0047.85-30.20310CAPE CLEARN75E248N56E142.00-28NNWPM STRONG GALESPM HAZYPM DRIZZLING RAIN01000009054
1798-03-12T14:0050.25-26.82362CAPE CLEARN85E229N62E191.00-28VARIABLEPM STRONG GALESPM HAZYPM RAIN01000009055
1798-03-13T14:0050.62-23.45310CAPE CLEARN86E172N80E131.00-28NNWPM FRESH BREEZES AND SQUALLYHEAVY SHOWERS OF SNOW10010009056
1798-03-14T13:0051.47-20.12362CAPE CLEARS88E113N73E140.00-28VARIABLEPM STRONG GALESPM HAZYRAIN01000009057
1798-03-15T13:0051.17-17.20221CAPE CLEARN87E73S81E111.00-27WSWPM FRESH BREEZESPM CLEAR00000009058