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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 ILCHESTER cruise from Anjengo to St. Helena started at 1751-03-05 [dataset]. British Library, London, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.746947, 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
Project(s):
Climatological Database for the Worlds Oceans: 1750-1854 (CLIWOC)
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00090: Climatological Database for the Worlds Oceans: 1750-1854
Coverage:
Median Latitude: -3.203333 * Median Longitude: 79.893704 * South-bound Latitude: -17.780000 * West-bound Longitude: 73.620000 * North-bound Latitude: 7.070000 * East-bound Longitude: 82.920000
Event(s):
Ilchester_17510305_BL_L/MAR/B/601B * Latitude Start: 8.840000 * Longitude Start: 76.590000 * Latitude End: -15.890000 * Longitude End: -5.750000 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ilchester, Start of voyage: 1751-03-16, End of voyage: 1751-04-11, Voyage: Anjengo - St Helena, 1st Observer: John Tedd (Author), Company: EIC, Other ship information: 498BM. 1745-1756
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Date/time startDate/time start
2 LATITUDELatitudeGeocode
3 LONGITUDELongitudeGeocode
4 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.
5 Wind speedffm/scalculated from the descriptive terms of wind force given in the observations
6 LandmarkLandmarkName of first landmark
7 BearingBearingBearing of the first landmark
8 Distance to landmarkDistancearbitrary unitsDistance to the first landmark
9 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 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
14 Current speed descriptionV descr
15 Wind force descriptionWind force descrAll reported wind forces on this day
16 Present weatherwwWeather description
17 Precipitation descriptionPrecip descr
18 State of the sea descriptionState sea descr
19 ClearnessClearness
20 GustsGusts1 If wind gusts are reported
21 Precipitation/RainRain1 If rain was reported
22 FogFog1 If fog was reported
23 Snow typeSnow1 If snow was reported
24 ThunderThunder1 If thunder and or lightning was reported
25 HailHail1 If hail was reported
26 Sea iceSea ice1 If sea-ice or icebergs were reported
27 IdentificationIDCLIWOC 2.1 line number
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
501 data points

Data

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

1 
Date/time start		2 
Latitude		3 
Longitude		4 
dd [deg]
(Wind direction (from which th...)		5 
ff [m/s]
(calculated from the descripti...)		6 
Landmark
(Name of first landmark)		7 
Bearing
(Bearing of the first landmark)		8 
Distance [arbitrary units]
(Distance to the first landmark)		9 
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 
Cur dir descr
(Direction of the current. Thi...)		14 
V descr		15 
Wind force descr
(All reported wind forces on t...)		16 
ww
(Weather description)		17 
Precip descr		18 
State sea descr		19 
Clearness		20 
Gusts
(1 If wind gusts are reported)		21 
Rain
(1 If rain was reported)		22 
Fog
(1 If fog was reported)		23 
Snow
(1 If snow was reported)		24 
Thunder
(1 If thunder and or lightning...)		25 
Hail
(1 If hail was reported)		26 
Sea ice
(1 If sea-ice or icebergs were...)		27 
ID
(CLIWOC 2.1 line number)
1751-03-16T07:007.0777.80338CAPE COMERINEEBS6S18E72.000SWBW, SBE, ESE, NNWFIRST PART LITTLE WIND, LATTER SQUALLYTHUNDER AND LIGHTNING AT MIDNIGHT AND 5AM0000100114398
1751-03-17T07:006.3578.05792.6CAPE COMERINES19E72.000ENE, ESE, EBNFIRST PART MODERATE GALES, LATTER LIGHT BREEZESLIGHTNING IN THE SE AT 8PM, LATTER FAIR0000100114399
1751-03-18T07:006.2078.423042.6CAPE COMERINEE23S39.000NEBN, NNE, CALM, NWBWN23LIGHT BREEZES INTERMIXED WITH CALMSHOTHAZY0000000114400
1751-03-19T07:006.0378.603610.0CAPE COMERINEE14S18.000N, NEBE, E, CALMFIRST PART LIGHT BREEZES, LATTER CALMFAIR, SULTRY HOT WEATHER0000000114401
1751-03-20T07:005.6278.803382.6CAPE COMERINESSE1/4E28.000NNW, WSW, NW, NNWLIGHT BREEZESFAIR, SULTRY0000000114402
1751-03-21T07:005.5378.983612.6CAPE COMERINESSE28.000NBW, CALMLIGHT BREEZES INTERMIXED WITH CALMSFAIR0000000114403
1751-03-22T07:004.4279.186815.4CAPE COMERINES10E57.000ESE, EBS, ENEFIRST PART LIGHT BREEZES, LATTER MODERATE GALESFAIRLARGE SWELL FROM SW0000000114404
1751-03-23T07:003.3279.67344.6CAPE COMERINES24E72.000NE, EBN, E, NEBNLIGHT GALESLARGE SWELL FROM SWCLOUDY0000100114405
1751-03-24T07:002.8380.155615.4CAPE COMERINESE73.000NEBE, EBN, ENE, NEBEN40MODERATE GALESCLOUDY0000100114406
1751-03-25T07:001.7780.3711CAPE COMERINESBE65.000NNE, NBW, NNW, NBELIGHT GALES THE FIRST PART, LATTER SQUALLYFIRST PART FAIRLATTER RAINLATTER HAZY0100000114407
1751-03-26T07:001.1780.652814.6CAPE COMERINES26E61.000NNW, WBN, SW, WBNLIGHT GALES INTERMIXED WITH SQUALLY WEATHERRAIN0100100114408
1751-03-27T07:000.4280.803382.6CAPE COMERINES11E47.000NW, W, NNWMODERATE GALES THE FIRST PART, LATTER LIGHT BREEZESCLOUDY0000100114409
1751-03-28T07:00-0.8081.0833815.4CAPE COMERINES13E86.000NNW, NWBW, WNW, NNWMODERATE GALESLARGE SWELL FROM SWHAZY0000100114410
1751-03-29T07:00-2.3381.5033815.4CAPE COMERINES15E120.000NNW, NBW, NNWMODERATE GALES INTERMIXED WITH SQUALLSRAINSMOOTH WATERHAZY0100000114411
1751-03-30T07:00-4.3281.9326919.0CAPE COMERINES12E131.00-1NW, W, WBS, WFRESH GALESSMOOTH WATER0000000114412
1751-03-31T06:00-5.5782.5327019.0CAPE COMERINES26E69.000WBS, W, WSW, WFRESH GALES WITH VERY HEAVY SQUALLSRAIN0100100114413
1751-04-01T06:00-6.8382.9027019.0CAPE COMERINES16E95.000WBS, WBN, WFRESH GALES WITH FREQUENT SQUALLSRAINCLOUDY0100100114414
1751-04-02T06:00-7.6582.8733715.4CAPE COMERINES1/4W72.00-1WBN, W, NW, NNWMODERATE GALESLARGE SWELL FROM SWCLOUDY0000000114415
1751-04-03T06:00-7.8382.922472.6CAPE COMERINES18E13.00-1WBN, WBS, SSW, CALM, WSWLIGHT BREEZES INTERMIXED WITH CALMSLARGE SWELLL FROM S0000000114416
1751-04-04T07:00-8.2882.401674.6CAPE COMERINES49W46.00-2CALM, SSE, SBW, S, SBEFIRST PART CALM, MIDDLE AND LATTER LIGHT GALESCLOUDY0000000114417
1751-04-05T07:00-9.2381.4814415.4CAPE COMERINES44W82.00-2SBE, SE, SEBS, SE, SEBSMODERATE GALES INTERMIXED WITH SQUALLSRAIN0100000114418
1751-04-06T07:00-10.3780.6513315.4CAPE COMERINESW3/4S80.00-2SSE, SE, SEBE, SEMODERATE GALES0000000114419
1751-04-07T07:00-11.7879.4813315.4CAPE COMERINES40W115.00-2SEBS, SEBE, SEMODERATE GALESFAIR0000000114420
1751-04-08T07:00-13.2278.6512115.4CAPE COMERINES30W104.00-3SEBE, SE, SEBEMODERATE GALESFAIR0000000114421
1751-04-09T07:00-14.7877.77121CAPE COMERINES29W123.00-3SEBE, ESE, SEBELATTER SQUALLYFIRST AND MIDDLE FAIRLATTER RAINLATTER LARGE SEA FORM SELATTER CLOUDY0100000114422
1751-04-10T07:00-16.4575.8814219.0CAPE COMERINES48W151.00-4SEBE, EBS, SE, SEBSFRESH GALES INTERMIXED WITH SQUALLS0000000114423
1751-04-11T07:00-17.7873.6211819.0CAPE COMERINES60W158.00-6SEBE, SE, ESE, SEBEFRESH GALES INTERMIXED WITH SQUALLSRAINLARGE SEA FORM SE0100000114424