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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 CENTURIAN cruise from Trincomale to Rodriguez started at 1794-09-12 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747855, 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: -12.159032 * Median Longitude: 72.657742 * South-bound Latitude: -20.570000 * West-bound Longitude: 58.000000 * North-bound Latitude: 6.750000 * East-bound Longitude: 87.000000
Date/Time Start: 1794-09-12T06:00:00 * Date/Time End: 1794-10-22T08:00:00
Event(s):
Centurian_17940912_NMM_ADM/L/C92 * Latitude Start: 8.620000 * Longitude Start: 81.600000 * Latitude End: 45.920000 * Longitude End: -1.800000 * Date/Time Start: 1794-09-12T00:00:00 * Date/Time End: 1794-10-22T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Centurian (4th Rate Frigate), Voyage: Trincomale - Rodriguez, 1st Observer: Samuel Osborn (Captain), Company: Royal Navy, Other ship information: 50G 1043BM
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 Precipitation descriptionPrecip descr
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 CommentComment
24 IdentificationIDCLIWOC 2.1 line number
Size:
617 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 
Precip descr
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 
Comment
24 
ID
(CLIWOC 2.1 line number)
1794-09-12T06:006.7583.272279.3TRINCOMALEN43W47S40E81.002ESE, SWBS, SWLIGHT AIRS INCLINABLE TO CALM, FRESH BREEZES0000000a trivial correction was made in this observation39366
1794-09-13T06:005.0384.432389.3TRINCOMALEN36W89S36E126.002SWBS, SW, SWBWFRESH BREEZES AND SQUALLYHEAVY SHOWERS OF RAIN1100000a trivial correction was made in this observation39367
1794-09-14T06:003.4085.432389.3TRINCOMALEN36W128S31E115.002SWBWFRESH BREEZES AND SQUALLYSMALL RAINCLOUDY0100000a trivial correction was made in this observation39368
1794-09-15T06:001.5086.222376.7TRINCOMALEN33W168S28E100.001SBW, WSW, SWBWSTEADY BREEZES AND SQUALLY, MODERATERAINFAIR THEN CLOUDY0100000a trivial correction was made in this observation39369
1794-09-16T06:00-0.1286.502716.7TRINCOMALEN30W193S17E86.001SWBW, SWBS, WMODERATE BREEZESPLEASANT000000039370
1794-09-17T06:00-2.4886.832496.7TRINCOMALEN23W232S8E144.001WBS, WSWMODERATECLOUDY000000039371
1794-09-18T06:00-3.7287.002602.6TRINCOMALEN24W268S8E75.001WSW, SWBW, WBSMODERATE, LIGHT WINDSFAIR000000039372
1794-09-19T06:00-4.8886.623622.6APALURIAN58W158S20W67.001WSW, N, WNW, VARIABLELIGHT WINDS AND SQUALLYPLEASANTS000000039373
1794-09-20T06:00-5.5086.453621.0APALURIAS61W175S16W39.001VARIABLELIGHT AIRS AND SQUALLYRAINCLOUDY010000039374
1794-09-21T06:00-6.0785.901022.6APALURIAS63W168S45W47.001SE, EBSMODERATE BREEZES, LIGHT WINDSHEAVY RAINFAIR AND CLOUDY010010039375
1794-09-22T06:00-7.1384.701706.7APALURIAS66W130S48W96.001SSE, SBELIGHT WINDS, MODERATE BREEZESRAINCLOUDY010000039376
1794-09-23T06:00-9.0282.781249.3APALURIAS80W80S45W163.000SEBE, ESE, SEBESQUALLY THEN FRESH BREEZESRAINCLOUDY010000039377
1794-09-24T07:00-11.2780.721239.3RODREGUESS67W377S42W183.00-1SE, SEBEFRESH BREEZESCLOUDY000000039378
1794-09-25T07:00-13.0378.301229.3RODREGUESS68W326S54W182.00-2SEBEFRESH BREEZESCLOUDY000000039379
1794-09-26T07:00-14.8775.7511012.3RODRIGUESS68W257S54W189.00-3SE, ESEFRESH BREEZES, STRONG BREEZESCLOUDY000000039380
1794-09-27T07:00-16.7073.031219.3RODRIGUESS72W195S55W192.00-3SEBEFRESH BREEZESCLOUDY000000039381
1794-09-28T07:00-18.6070.521176.7RODRIGUESS81W134S54W202.00-7SEBEFRESH BREEZES THEN MORE MODERATECLOUDY000000039382
1794-09-29T08:00-19.6366.781259.3RODRIGUESW66S72W203.00-10SEFRESH BREEZESCLOUDY000000039383
1794-09-30T08:00-19.6263.601259.3RODRIGUESSWBW4-10SESTEADY BREEZESPLEASANT000000039384
1794-10-01T00:00-19.58239.3RODRIGUESSBESE, NNEFRESH BREEZESPLEASANT000000039385
1794-10-02T00:00-19.581246.7BOOBY ISLANDSWBSSE, SEBEMODERATE BREEZESPLEASANT000000039386
1794-10-03T08:00-19.5863.5012512.3RODRIGUESS1/2W4-10SE, SEBS, SEBE, SESTRONG BREEZESCLOUDY000000039387
1794-10-04T08:00-19.5763.5010312.3RODRIGUESS1/2W4-10SEBE, SE, SEBE, ESESTRONG BREEZESCLOUDY000000039388
1794-10-13T08:00-19.9062.081126.7RODRIGUESESE5-12SEBEMODERATEPLEASANT000000039389
1794-10-14T08:00-20.2360.67116.7ISLE RONDEN38W68S75W135.00-12ENE, NEBE, N, NNEMODERATE BREEZESPLEASANT000000039390
1794-10-15T08:00-20.3759.603621.0ISLE RONDEN77W48S82W61.00-12VARIABLEMODERATE THEN LIGHT AIRSPLEASANT THEN CLOUDY, THEN CLEAR000000039391
1794-10-16T08:00-20.1758.001237.3ISLE RONDEN38W9N82W97.00-12SW, SWBS, SBE, SELIGHT WINDS FRESHENING BREEZESPLEASANT THEN CLOUDY000000039392
1794-10-17T08:00-20.0858.481239.3ISLE RONDEN46W17S65E41.00-12SEMODERATE THEN FRESH BREEZESCLOUDY000000039393
1794-10-18T08:00-20.5758.121019.3ISLE RONDEN22W17S66W7.00-12ESE, SEBE, ESEFRESH BREEZESCLOUDY000000039394
1794-10-19T08:00-20.1258.37566.7ISLE RONDEN60W36N47E15.00-12ESE, E, EBN, ENEMODERATEPLEASANT000000039395
1794-10-20T08:00-20.3058.33566.7ISLE RONDEN54W14S9W12.00-12EBN, E, ENEMODERATE BREEZESPLEASANT000000039396
1794-10-21T08:00-20.3858.47566.7ISLE RONDE17S67E13.00-12E, EBN, ENEMODERATE BREEZESCLOUDY000000039397
1794-10-22T08:00-19.7058.441121.0ISLE RONDEN70W14-12ENE, ESE, E, SEBELIGHT AIRSPLEASANT000000039398