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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 WEAZLE cruise from Senegal to Falmouth started at 1774-08-15 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752860, 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: 33.362955 * Median Longitude: -21.836591 * South-bound Latitude: 16.170000 * West-bound Longitude: -28.980000 * North-bound Latitude: 49.530000 * East-bound Longitude: -7.260000
Date/Time Start: 1774-08-15T13:00:00 * Date/Time End: 1774-09-28T12:00:00
Event(s):
Weazle_17740815_NMM_ADM/L/W46 * Latitude Start: 16.170000 * Longitude Start: -17.650000 * Latitude End: 49.950000 * Longitude End: -5.000000 * Date/Time Start: 1774-08-15T00:00:00 * Date/Time End: 1774-09-28T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Weazle (Sloop), Voyage: Senegal - Falmouth, 1st Observer: Samuel Warren (Captain), Company: Royal Navy, Other ship information: 16G 308BM
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 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
Size:
850 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 
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)
1774-08-15T13:0016.17-17.652476.7SENEGALS58E5N58W15.00-12W, WNW, WBSMODERATECLOUDY0000000278521
1774-08-16T13:0016.97-17.852362.6SENEGALS23E20N12W50.00-12WBS, W, WSWLIGHT BREEZESLIGHTNINGHAZY0000100278522
1774-08-17T13:0017.12-18.28561.0SENEGALS29E33N40W38.00-12WBS, VARIABLE, ENELIGHT AIRSLIGHTNINGHAZY0000100278523
1774-08-18T13:0017.57-19.453361.0SENEGALS51E50N84W67.00-13ENE, NBE, NBWLIGHT AIRSCLEAR0000000278524
1774-08-19T13:0017.70-20.90102.6SENEGALS63E75N85W84.00-13NWBN, VARIABLE, NNELIGHT BREEZESHAZY0000000278525
1774-08-20T13:0018.82-22.03329.3SENEGALS57E104N44W93.00-13NEBN, NEFRESH BREEZESHAZY0000000278526
1774-08-21T14:0019.87-23.06469.3SENEGALS55E132N43W86.00-10NE, ENE, NEBEFRESH BREEZESHAZY0000000278527
1774-08-22T14:0021.15-24.11589.3SENEGALS51E163N37W97.00-10NEBE, ENEFRESH BREEZESHAZY0000000278528
1774-08-23T14:0022.40-25.06359.3SENEGALS48E192N33W92.00-10NE, ENE, NEFRESH BREEZESCLEAR0000000278529
1774-08-24T14:0023.68-26.11449.3SENEGALS47E224N37W96.00-12NEBE, ENE, NEBEFRESH BREEZESCLOUDY0000000278530
1774-08-25T14:0025.05-27.05446.7SENEGALS44E254N31W97.00-12NEBEMODERATEFAIR0000000278531
1774-08-26T14:0026.50-27.40786.7SENEGALS41E283N12W89.00-12EBN, EMODERATEFAIR0000000278532
1774-08-27T14:0028.17-27.73446.7SENEGALS38E306N11W93.00-12EBN, ENE, NEBEMODERATEFAIR0000000278533
1774-08-28T14:0029.58-28.48449.3SENEGALS36E339NNW102.00-12NEBEMODERATE, NOON FRESH BREEZES AND SQUALLYFAIR0000000278534
1774-08-29T14:0030.78-28.88679.3SENEGALS35E362N15W75.00-12E, ENE, EBNFRESH BREEZES AND SQUALLYDRIZZLING RAIN0100000278535
1774-08-30T14:0031.70-28.98446.7SENEGALS31E376N5W55.00-12EBN, ENE, NEBEMODERATE WITH SQUALLS AT TIMESRAINCLOUDY0100000278536
1774-08-31T14:0032.63-28.812111.0SENEGALS31E387N9E57.00-14EBN, EBS, SWLIGHT AIRSFAIR0000000278537
1774-09-01T14:0033.58-28.852561.0SENEGALS30E407N2W57.00-14WSW, WLIGHT AIRSFAIR0000000278538
1774-09-02T14:0034.45-28.702672.6SENEGALS29E422N8E53.00-14W, WBNLIGHT BREEZESFAIR0000000278539
1774-09-03T14:0034.95-27.20196.7SENEGALS25E419N67E80.00-15W, WSW, NEBNMOST PART MODERATE, MIDDLE SQUALLYMIDDE RAINFAIR0100000278540
1774-09-04T14:0034.97-26.36642.6SENEGALS22E411N88E41.00-15NNE, NEBN, EBNSET TO W0.5LIGHT BREEZESFAIR0000000278541
1774-09-05T14:0034.78-26.38642.6SENEGALS22E404S64E26.00-15VARIABLE, NEBE, EBNLIGHT BREEZESCLOUDY0000000278542
1774-09-06T14:0035.12-25.50641.0SENEGALS21E408N42E27.00-15EBNLIGHT AIRSFAIR0000000278543
1774-09-07T14:0035.10-24.73302.6SENEGALS18E403E38.00-15SW, NELIGHT BREEZESFAIR0000000278544
1774-09-09T14:0035.57-22.851886.7SENEGALS14E402N71E49.00-15W, SSWMODERATE, 4PM SQUALLYFAIR0000000278545
1774-09-10T14:0035.80-22.581432.6SENEGALS12E406N44E20.00-15WSW, SSELIGHT BREEZESFAIR0000000278546
1774-09-11T13:0036.68-22.453622.6SENEGALS12E421N8E53.00-17VARIABLELIGHT BREEZESCLOUDY0000000278547
1774-09-12T13:0037.18-22.3662.6SENEGALS11E434N8E32.00-17SEBE, EBN, NNELIGHT BREEZESCLOUDY0000000278548
1774-09-13T13:0037.40-22.30626.7SENEGALS11E435N15E13.00-17NNW, NE, EBNFIRST AND LATTER MODERATE, MIDDLE SQUALLYMIDDLE RAINCLOUDY0100000278549
1774-09-14T13:0037.53-22.21616.7SENEGALS11E438N7E8.00-18ENE, EBNMODERATECLOUDY0000000278550
1774-09-15T14:0038.42-22.55516.7SENEGALS9E457N18W56.00-17ENEMODERATECLOUDY0000000278551
1774-09-16T14:0039.53-22.91962.6SENEGALS12E480N16W70.00-17EBN, E, ESEFIRST AND LATTER LIGHT BREEZES, MIDDLE SQUALLYMIDDLE RAINFIRST AND LATTER CLOUDY0100000278552
1774-09-17T14:0040.20-22.713622.6SENEGALS11E492N15E41.00-17ESE, SE, VARIABLEFIRST AND LATTER LIGHT BREEZES, MIDDLE SQUALLYMIDDLE RAINFIRST AND LATTER CLOUDY0100000278553
1774-09-18T13:0041.12-21.882752.6SENEGALS8E508N39E70.00-18SWBW, WNWFIRST AND LATTER LIGHT BREEZES, MIDDLE SQUALLYMIDDLE RAINFIRST AND LATTER CLOUDY0100000278554
1774-09-19T13:0042.00-20.0827SENEGALS4E521N61E108.00-18WBN, WNW, NESQUALLYRAIN0100000278555
1774-09-20T13:0041.50-18.15279.3SENEGALS2E510S59E59.00-18NE, NEBE, NEFRESH BREEZESCLOUDY0000000278556
1774-09-21T13:0042.53-17.1129419.0SENEGALS530N41E83.00-21NEBN, NWFIRST PART MODERATE, MIDDLE AND LATTER FRESH GALES AND SQUALLYMIDDLE AND LATTER RAINFIRST PART CLOUDY0100000278557
1774-09-22T13:0044.23-14.8527219.0SENEGALS5W566N49E156.00-21NW, SW, WNWFRESH GALES AND SQUALLY0000000278558
1774-09-23T13:0044.33-14.083526.8SENEGALS11W577N82E40.00-21UP N OFF NE, UP NNE OFF NEBEHARD GALES AND SQUALLYRAINGREAT SEA FROM W0100000278559
1774-09-24T13:0044.42-13.2129426.8SENEGALS7W572N83E45.00-21NWHARD GALES AND SQUALLYRAINGREAT SEA FROM W0100000278560
1774-09-25T13:0045.58-11.982499.3SENEGALS9W584N49E92.00-21WNW, NW, WFIRST PART MODERATE, MIDDLE AND LATTER FRESH BREEZES AND SQUALLYGREAT SEAFIRST PART CLOUDY0000000278561
1774-09-26T13:0047.03-10.713289.3SENEGALS10W630N38E110.00-21WBN, NBWFIRST PART MODERATE, MIDDLE AND LATTER FRESH BREEZES AND SQUALLYGREAT SEAFIRST PART CLOUDY0000000278562
1774-09-27T13:0048.58-9.032039.3SENEGALS12W665N20E99.00-22NNW, NW, SWFRESH BREEZESCLOUDY0000000278563
1774-09-28T12:0049.53-7.2624819.0SENEGALS14W691N57E106.00-22SW, WFRESH GALESRAINCLOUDY0100000278564