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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 GRAFTON cruise from Augustine Bay to Bombay started at 1758-08-29 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749465, 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: -5.584815 * Median Longitude: 49.500000 * South-bound Latitude: -21.980000 * West-bound Longitude: 42.580000 * North-bound Latitude: 7.770000 * East-bound Longitude: 65.500000
Date/Time Start: 1758-08-29T09:00:00 * Date/Time End: 1758-09-30T08:00:00
Event(s):
Grafton_17580829_NMM_ADM/L/G207 * Latitude Start: -21.980000 * Longitude Start: 42.840000 * Latitude End: 18.500000 * Longitude End: 72.820000 * Date/Time Start: 1758-08-29T00:00:00 * Date/Time End: 1758-09-30T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Grafton (3rd Rate Frigate), Voyage: Augustine Bay, Madagascar - Bombay, 1st Observer: Richard Tiddeman (Captain), 2nd Observer: John Cove (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 68G 1414BM
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 Compass, established errorCompass established e
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 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
15 Current speed descriptionV descr
16 Wind force descriptionWind force descrAll reported wind forces on this day
17 Precipitation descriptionPrecip 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:
606 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 
Compass established e
13 
Wind dir descr
(All reported wind directions ...)
14 
Cur dir descr
(Direction of the current. Thi...)
15 
V descr
16 
Wind force descr
(All reported wind forces on t...)
17 
Precip 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)
1758-08-29T09:00-21.9842.843626.7AUGUSTINE BAYS27W37N1/4W63.00-2122:44WVARIABLEMODERATEFAIR0000000104449
1758-08-30T09:00-21.6242.663626.7AUGUSTINE BAYS26E45N24W24.00-2122:52WVARIABLEMODERATEFAIR0000000104450
1758-08-31T09:00-21.4342.583282.6AUGUSTINE BAYS26E48N27W11.00-21NBWLITTLE WINDCLEAR0000000104451
1758-09-01T09:00-19.4042.891829.3AUGUSTINES BAYS10E86N3/4E124.00-2122:32WSSWFRESH BREEZESCLEAR0000000104452
1758-09-02T09:00-17.6743.261709.3AUGUSTINES BAYS4E120NBE108.00-2121:37WSBWFRESH BREEZESCLEAR0000000104453
1758-09-03T09:00-16.5743.363622.6AUGUSTINES BAYS1/4E141N1/2E66.00-1920:50WVARIABLELITTLE WINDSCLEAR0000000104454
1758-09-05T09:00-14.5344.013626.7AUGUSTINES BAYS181N25E69.00-1920:07WVARIABLEMODERATECLOUDY0000000104455
1758-09-06T09:00-13.5044.333629.3AUGUSTINES BAYS3W193N17E65.00-1919:04WVARIABLEFIRST AND MIDDLE PARTS LITTLE WIND, LATTER FRESH BREEZESFIRST AND MIDDLE PARTS FAIR0000000104456
1758-09-07T09:00-13.1844.541610.0AUGUSTINES BAYS04W199N33E25.00-1918:38WE, CALM, SFIRST AND MIDDLE PARTS LITTLE WIND, LATTER CALMFIRST AND MIDDLE PARTS FAIR0000000104457
1758-09-08T00:002.6JOANNANNE10LITTLE WINDFAIR0000000104458
1758-09-09T00:002.6LITTLE WINDFAIR0000000104459
1758-09-10T00:002.6COMERONW5WBN16 MILES IN 24 HOURSLITTLE WINDFAIR0000000104460
1758-09-11T00:002.6COMEROWSW6WESTERN CURRENTSTRONGLITTLE WINDFAIR0000000104461
1758-09-12T00:002.6COMEROSEBS8WESTERN CURRENTLITTLE WINDFAIR0000000104462
1758-09-13T09:00-11.3743.953620.6COMEROE12SW16.00-17VARIABLELIGHT AIRS INCLINABLE TO CALMS0000000104463
1758-09-14T09:00-9.9244.5715219.0COMEROS35E42NNW95.00-1718:50WSBEFRESH GALESCLOUDY0000000104464
1758-09-15T09:00-8.4244.703626.7COMEROS22E70N5W90.00-1718:40WVARIABLEMODERATEFAIR0000000104465
1758-09-16T09:00-6.3843.9720919.0COMEROS07E107N20E130.00-1617:40WSWFRESH GALESFAIR0000000104466
1758-09-17T09:00-4.4243.7815319.0COMEROS04W142N30E124.00-16SBEFRESH GALESFAIR0000000104467
1758-09-18T09:00-3.1745.3815319.0COMEROS13W175N48E130.00-1615:42WSBEFRESH GALESFAIR0000000104468
1758-09-19T09:00-1.9347.1515519.0COMEROS21W209N55E130.00-1417:50WSBEFRESH GALESFAIR0000000104469
1758-09-20T09:00-0.7548.6719119.0COMEROS26W243N52E116.00-1215:00WSSWFRESH GALESFAIR0000000104470
1758-09-21T09:002.5049.771916.7COMEROS27W278NE1/4E117.00-1213:00WSSWMODERATESMALL RAINHAZY0100000104471
1758-09-22T09:002.5051.2719119.0COMEROS27W320NE1/4E117.00-1212:28WSSWFRESH GALESCLOUDY0000000104472
1758-09-23T08:004.0853.3723919.0COMEROS32W373N55E154.00-911:28WWSWFIRST PART MODERATE, LATTER FRESH GALESFIRST PART FAIR, LATTER CLOUDY0000000104473
1758-09-24T08:004.4555.9323919.0COMEROS38W409N79E156.00-910:53WWSWFRESH GALESHAZY0000000104474
1758-09-25T08:005.4258.0321919.0COMEROS40W452N65E140.00-610:48WSWFRESH GALESHAZY0000000104475
1758-09-26T08:006.5260.2017419.0COMEROS43W496N63E146.00-69:10WSSW, SFRESH GALESCLEAR0000000104476
1758-09-27T08:007.2862.1319719.0COMEROS44W533N68E126.00-6SSWFRESH GALESCLEAR0000000104477
1758-09-28T08:007.3863.381766.7COMEROS46W557E1/2N80.00-4SMODERATECLOUDY0000000104478
1758-09-29T08:007.5564.282216.7COMEROSW1/4W567N78E50.00-4SWMODERATECLOUDY0000000104479
1758-09-30T08:007.7765.502216.7COMEROS49W590EBN75.00-406:08WSWMODERATEHAZY0000000104480