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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 Lord Anson cruise from St. Helena to Plymouth started at 1752-03-21. British Library, London, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.746994, 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: -3.680000 * Median Longitude: -18.558182 * South-bound Latitude: -9.550000 * West-bound Longitude: -20.600000 * North-bound Latitude: -1.300000 * East-bound Longitude: -12.150000
Event(s):
Lord_Anson_17520321_BL_L/MAR/B/549B * Latitude Start: -15.890000 * Longitude Start: -5.750000 * Latitude End: 50.299000 * Longitude End: -4.150000 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Lord Anson, Start of voyage: 1752-04-01, End of voyage: 1752-04-11, Voyage: St Helena - Plymouth, 1st Observer: Charles Foulis (Captain), Company: EIC
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Date/time startDate/time start
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 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 IdentificationIDCLIWOC 2.1 line number
Size:
205 data points

Data

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


Date/time start

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 
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 
ID
(CLIWOC 2.1 line number)
1752-04-01T13:00-9.55-12.151149.3ASCENSION ISLANDNWBN12N35W119.00-10SEBEA FINE PLEASANT GALEFAIRSMOOTH WATER0000000152241
1752-04-02T13:00-6.67-15.82719.3ASCENSION ISLANDSEBS2N41W125.00-8ESE, EBNA VERY PLEASANT TRADEFINE0000000152242
1752-04-03T13:00-5.03-17.521309.3ASCENSION ISLANDN41W152.00-5E, SEBE, SEA FINE PLEASANT TRADESMOOTH WATERFINE0000000152243
1752-04-04T13:00-3.83-18.701419.3ASCENSION ISLANDN40W109.00-5SE, SEBSA CONSTANT TRADEFAIR0000000152244
1752-04-05T13:00-3.32-19.15400.0ASCENSION ISLANDN40W41.00-5SE, SEBS, NEBE, NEFIRST PART A LIGHT BREEZE, MIDDLE VARIABLE, LATTER CALM0000000152245
1752-04-06T13:00-2.57-19.55362ASCENSION ISLANDN28W51.00-5SBW, SEBE, NEBE, VARIABLELIGHT BREEZES, SOME LIGHT SQUALLSGREAT DEAL OF RAIN IN THE NIGHTCLOUDY0100000152246
1752-04-07T13:00-2.33-19.72391.0ASCENSION ISLANDN28W22.00-6SSE, CALM, EBS, NELIGHT AIRS AND CALMFAIR0000000152247
1752-04-08T13:00-2.10-20.24501.0ASCENSION ISLANDNW1/2W42.00-6NE, N, VARIABLE, NEBELIGHT AIRSMOST PART FAIR0000000152248
1752-04-09T13:00-2.05-20.253610.0ASCENSION ISLANDN27W3.00-6NEBE, CALMMOSTLY CALMLATTER RAINYFIRST AND MIDDLE PARTS FAIR, LATTER CLOUDY0100000152249
1752-04-10T13:00-1.73-20.44952.6ASCENSION ISLANDN18W39.00-6SW, CALM, SEBS, EBSFIRST PART SQUALLY, MIDDLE CALM, LATTER LIGHT BREEZESFIRST PART HARD RAINLATTER FAIR0100000152250
1752-04-11T13:00-1.30-20.60622.6ASCENSION ISLANDN21W29.00-6EBN, NNE, SEBE, ENEA LIGHT BREEZE WITH SOME SQUALLSFAIR0000000152251