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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 ELTHAM cruise from Lisbon to Uk started at 1750-05-08 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.746918, 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: 44.058000 * Median Longitude: -10.266000 * South-bound Latitude: 38.720000 * West-bound Longitude: -13.540000 * North-bound Latitude: 49.530000 * East-bound Longitude: -4.320000
Event(s):
Eltham_17500508_NMM_ADM/L/E95 * Latitude Start: 38.530000 * Longitude Start: -9.740000 * Latitude End: 49.450000 * Longitude End: -5.630000 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Eltham, Start of voyage: 1750-05-19, End of voyage: 1750-06-02, Voyage: Lisbon - Uk, 1st Observer: John Lloyd (Captain), 2nd Observer: Samuel Wallis (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 44G. 678BM
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
--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 Present weatherwwWeather description
16 Precipitation descriptionPrecip descr
17 State of the sea descriptionState sea descr
18 ClearnessClearness
19 GustsGusts1 If wind gusts are reported
20 Precipitation/RainRain1 If rain was reported
21 FogFog1 If fog was reported
22 Snow typeSnow1 If snow was reported
23 ThunderThunder1 If thunder and or lightning was reported
24 HailHail1 If hail was reported
25 Sea iceSea ice1 If sea-ice or icebergs were reported
26 IdentificationIDCLIWOC 2.1 line number
Size:
307 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)

-
(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 
ww
(Weather description)
16 
Precip descr
17 
State sea descr
18 
Clearness
19 
Gusts
(1 If wind gusts are reported)
20 
Rain
(1 If rain was reported)
21 
Fog
(1 If fog was reported)
22 
Snow
(1 If snow was reported)
23 
Thunder
(1 If thunder and or lightning...)
24 
Hail
(1 If hail was reported)
25 
Sea ice
(1 If sea-ice or icebergs were...)
26 
ID
(CLIWOC 2.1 line number)
1750-05-19T13:0038.80-10.92192.6CAPE ROCA(?)N79:45E23S10:5W68.00-15N, NNW, N, NEBNLITTLE WINDHAZY000000089495
1750-05-20T13:0038.72-12.04192.6CAPE ROCA(?)N81:49E40W1/2S53.00-15N, NNW, N, NEBNFIRST PART MODERATE, MIDDLE AND LATTER LITTLE WINDFIRST HAZY, MIDDLE AND LATTER CLOUDY000000089496
1750-05-21T13:0038.88-13.543456.7CAPE ROCA(?)N87:52E63N81:45W71.00-15NEBN, NNE, NEBN, NNE, NFIRST AND MIDDLE FRESH GALES, LATTER PART MODERATE WITH SQUALLY EPISODE AT 3PMSWELLFIRST AND MIDDLE PART HAZY, LATTER CLOUDY000000089497
1750-05-22T13:0040.02-13.2123319.0CAPE ROCA(?)S54:52E73N14:45E69.00-15N, NW, W, WSWFIRST AND MIDDLE PART MODERATE, LATTER FRESH GALESDRIZZILING RAIN IN LATTERFIRST PART FAIR, MIDDLE CLOUDY, LATTER THICK HAZY010000089498
1750-05-23T13:0042.00-12.51278CAPE ROCA(?)S37:53E76N14:45E119.00-15WSWWBS, NBW, NNW, WNWFIRST PART FRESH GALES, MIDDLE STRONG GALES IN THE LATTER, MIDDLE PART SQUALLYRAIN IN FIRST PART,LATTER PART CLOUDY010000089499
1750-05-24T13:0042.78-10.863226.7CAPE ROCA(?)S15:16E78NEBE1/2E91.00-16NNW, N, NNWMODERATECLOUDY000000089500
1750-05-25T13:0042.37-12.4234515.4CAPE ROCA(?)S33:44E89S72:00W88.00-15NMODERATE GALESCLOUDY000000089501
1750-05-26T13:0042.60-12.662096.7CAPE ROCA(?)S33:41E87N32:00W19.00-16N, SWFIRST PART LITTLE WIND, MIDDLE CALM AND LATTER MODERATEFIRST AND LATTER CLOUDY AND MIDDLE CLEAR000000089502
1750-05-27T13:0044.50-11.9229919.0CAPE ROCA(?)S18:16E116NNE124.00-16WBS, SW, NWFIRST PART MODERATE, MIDDLE AND LATTER FRESH GALES AND SQUALLYSOME RAIN IN MIDDLE AND LATTERFIRST PART CLOUDY010000089503
1750-05-28T13:0046.67-10.4617515.4CAPE ROCA(?)S5:21E154N26:15E146.00-16WBN, SWBW, SBWMODERATE GALESSOME RAIN IN LATTER PARTCLOUDY010000089504
1750-05-29T13:0047.40-9.261872.6CAPE ROCA(?)S1:08W168NE1/2E69.00-16SSWFIRST PART FRESH GALES, MIDDLE AND LATTER LITTLE WINDFIRST PART HAZY, MIDDLE AND LATTER CLOUDY000000089505
1750-05-30T12:0048.33-7.492766.7CAPE ROCA(?)S8:44W189N43:30E94.00-17S, N, WNWFIRST PART LITTLE BREEZES, MIDDLE AND LATTER MODERATECLOUDY000000089506
1750-05-31T12:0049.10-6.51282.6CAPE ROCA(?)S11:51W206N41:50E62.00-17NWBN, SW, NBW, NEFIRST PART MODERATE, MIDDLE AND LATTER LIGHT BREEZESCLOSEMIDDLE AND LATTER RAINYFIRSY PART CLOUDY, MIDDLE AND LATTER HAZY010000089507
1750-06-01T12:0049.17-5.8769.3CAPE ROCA(?)S14:15W210E82:30N29.00-17NNE, ENE, NNEFIRST AND MIDDLE LITTLE WIND, LATTER FRESH BREEZESFIRST AND MIDDLE PARTS THICK HAZY, LATTER CLOUDY000000089508
1750-06-02T12:0049.53-4.3220815.4CAPE ROCA(?)S19:16W2231N71:30E71.00-17NEBN, N, NW, SWFIRST AND LATTER MODERATE GALES, MIDDLE LITTLE WINDCLOUDY000000089509