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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 GRAMPUS cruise from Plymouth to Barbados started at 1797-08-20 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749477, 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: 29.828696 * Median Longitude: -23.532174 * South-bound Latitude: 13.300000 * West-bound Longitude: -45.230000 * North-bound Latitude: 48.620000 * East-bound Longitude: -6.400000
Date/Time Start: 1797-08-20T12:00:00 * Date/Time End: 1797-09-15T15:00:00
Event(s):
Grampus_17970820_NMM_ADM/L/G114 * Latitude Start: 50.299000 * Longitude Start: -4.150000 * Latitude End: 14.850000 * Longitude End: -59.680000 * Date/Time Start: 1797-08-20T00:00:00 * Date/Time End: 1797-09-15T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Grampus (5th Rate Frigate), Voyage: Plymouth - Barbados, 1st Observer: Thomas Boys (1st Officer/Master), Company: Royal Navy, Other ship information: 54G 1165BM
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 Wind force descriptionWind force descrAll reported wind forces on this day
14 Present weatherwwWeather description
15 ClearnessClearness
16 GustsGusts1 If wind gusts are reported
17 Precipitation/RainRain1 If rain was reported
18 FogFog1 If fog was reported
19 Snow typeSnow1 If snow was reported
20 ThunderThunder1 If thunder and or lightning was reported
21 HailHail1 If hail was reported
22 Sea iceSea ice1 If sea-ice or icebergs were reported
23 IdentificationIDCLIWOC 2.1 line number
Size:
486 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 
Wind force descr
(All reported wind forces on t...)
14 
ww
(Weather description)
15 
Clearness
16 
Gusts
(1 If wind gusts are reported)
17 
Rain
(1 If rain was reported)
18 
Fog
(1 If fog was reported)
19 
Snow
(1 If snow was reported)
20 
Thunder
(1 If thunder and or lightning...)
21 
Hail
(1 If hail was reported)
22 
Sea ice
(1 If sea-ice or icebergs were...)
23 
ID
(CLIWOC 2.1 line number)
1797-08-20T12:0048.62-6.402979.3CAPE ORTUGALS10W72S30W93.00-24NW1/2NFRESH BREEZESCLEAR0000000104575
1797-08-21T12:0047.02-6.402709.3CAPE FINISTERES24W91S80W96.00-23VARIABLE, NW, WNWFRESH BREEZESHAZY WEATHER0000000104576
1797-08-22T13:0045.93-8.282919.3CAPE FINISTERES11:50W62W92.00-24S, NWFRESH BREEZES AND SQUALLY WEATHER0000000104577
1797-08-23T13:0044.62-9.80661.0CAPE FINISTERES13E36S39W101.00-24ELIGHT AIRSCLEAR0000000104578
1797-08-24T13:0042.03-9.98919.3CAPE ROXANTS8E66S33W61.00-22E, ESEFRESH BREEZESCLEAR0000000104579
1797-08-25T13:0039.58-11.623492.6PORTO SANCTOS30:40W154S27W164.00-22NE, NBELIGHT BREEZESCLEAR0000000104580
1797-08-26T13:0037.85-12.37236.7PORTO SANCTOS33:10W118S19W107.00-22NEMODERATE BREEZESCLOUDY0000000104581
1797-08-27T13:0036.53-12.683621.0PORTO SANCTOS40:10W97S11W81.00-21VARIABLELIGHT AIRSCLEAR WEATHER0000000104582
1797-08-28T13:0035.18-13.532496.7PORTO SANCTOS46WS28W90.00-21VARIABLE, WMODERATE BREEZESCLEAR WEATHER0000000104583
1797-08-29T13:0032.40-14.773301.0PORTO SANCTOS7W27S34W125.00-19NBWLIGHT AIRSCLEAR WEATHER0000000104584
1797-08-30T00:0033.603496.7N, NBWMODERATE BREEZESCLOUDY WEATHER0000000104585
1797-08-31T00:0032.40116.7VARIABLE, NBEMODERATE BREEZESCLEAR0000000104586
1797-09-01T00:0032.471.0FUNCHALNW4LIGHT AIRSCLEAR WEATHER0000000104587
1797-09-02T00:0032.050.0MADEIRAN12CALMSULTRY WEATHER0000000104588
1797-09-03T13:0030.62-19.8716PALMAS43E55S46W174.00-18NEBNVARIABLE WINDSCLOUDY WEATHER0000000104589
1797-09-04T13:0028.73-22.18169.3NORTH END OF BARBADOSS66W757S47W155.00-18NEBNFRESH BREEZESHAZY WEATHER0000000104590
1797-09-05T14:0026.88-24.85536.7NORTH END OF BARBADOSS67W706S51W180.00-15ENEMODERATE BREEZESCLOUDY WEATHER0000000104591
1797-09-06T14:0025.02-27.43649.3NORTH END OF BARBADOSS60:40W608S51W180.00-15ENE, EBNFRESH BREEZESCLOUDY WEATHER0000000104592
1797-09-07T14:0023.45-29.87666.7NORTH END OF BARBADOSS70:30E605S54:40W163.00-13EBS, EBNMODERATE BREEZESHAZY WEATHER0000000104593
1797-09-08T14:0022.17-31.82566.7NORTH END OF BARBADOSS71:30W565S33W134.00-12ENEMODERATE BREEZESCLOUDY WEATHER0000000104594
1797-09-09T14:0020.93-33.17706.7NORTH END OF BARBADOSS74:30E525S56W125.00-9EBNMODERATE BREEZESCLOUDY WEATHER0000000104595
1797-09-10T14:0019.58-35.40706.7NORTH END OF BARBADOSS75W477S55W147.00-9ENE, EBNMODERATE BREEZESFAIR WEATHER0000000104596
1797-09-11T15:0018.32-37.95619.3NORTH END OF BARBADOSS77W429S62W163.00-7ESE, ENEFRESH BREEZESCLOUDY WEATHER0000000104597
1797-09-12T15:0017.18-40.48859.3NORTH END OF BARBADOSS79W380S64W161.00-5EFRESH BREEZESFAIR WEATHER0000000104598
1797-09-13T15:0015.60-43.08876.7NORTH END OF BARBADOSS82W329S58W77.00-3EBS, EMODERATE BREEZESFAIR WEATHER0000000104599
1797-09-14T15:0014.52-44.08876.7NORTH END OF BARBADOSS85:30W295S56W116.00-3EMODERATEHAZY0000000104600
1797-09-15T15:0013.30-45.2353NORTH END OF BARBADOSW266S50W112.00-3NEBEFAIR AND CLEAR0000000104601