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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 ILCHESTER cruise from The Downs to Morandava started at 1750-05-20 [dataset]. British Library, London, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.746945, 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: -27.332321 * Median Longitude: 0.509643 * South-bound Latitude: -36.150000 * West-bound Longitude: -26.330000 * North-bound Latitude: -0.220000 * East-bound Longitude: 41.200000
Event(s):
Ilchester_17500520_BL_L/MAR/B/601B * Latitude Start: -0.220000 * Longitude Start: -20.300000 * Latitude End: -20.100000 * Longitude End: 43.960000 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ilchester, Start of voyage: 1750-05-31, End of voyage: 1750-07-29, Voyage: The Downs - Morandava (Madagascar), 1st Observer: John Tedd (Author), Company: EIC, Other ship information: 498BM. 1745-1756
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
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 CommentComment
28 IdentificationIDCLIWOC 2.1 line number
Size:
1195 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)

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 
Comment
28 
ID
(CLIWOC 2.1 line number)
1750-05-31T13:00-0.22-20.3012915.4PALMAS32WSW1/2S TO SWBS83.00-6SEBS, SE, SEBE, SE8NM S OF ACCTA MODERATE GALEFAIRSMOOTH WATER0000000114304
1750-06-01T13:00-1.83-20.7111815.4PALMAS15WSSW TO S89.00-6SEBE, ESE, E, SEBES11A MODERATE GALEFAIRSMOOTH WATER0000000114305
1750-06-02T13:00-4.20-21.7611919.0PALMAS24WSBW TO SSW142.00-5ESE, SE, SEBES16A FRESH GALE THROUGHOUTLARGE SWELL FROM SECLOUDY0000000114306
1750-06-03T14:00-6.32-22.769819.0PALMASSW1/4WSSW TO S141.00-3SEBE, SE, ESE, EBSA FRESH GALE AND SQUALLYRAIN AT 1AMLARGE SEACLOUDY0100000114307
1750-06-04T14:00-8.47-23.3611119.0PALMAS16WS TO SBW123.00-2EBS, ESE, EBS, ESEFRESH GALES WITH HARD SQUALLSRAINLARGE SEA FROM E0100000114308
1750-06-05T14:00-10.17-24.2511119.0PALMAS27W112.00-2ESE, SEBE, EBS, ESEA FRESH GALE WITH HARD SQUALLSFIRST PART RAINLARGE SEA0100000114309
1750-06-06T14:00-11.90-25.0611115.4PALMASSW1/4W116.00-2SSE, EBS, ESEA MODERATE GALELATTER FAIRLARGE SEA FROM EFIRST PART CLOUDY0000000114310
1750-06-07T14:00-13.63-25.70786.7PALMAS20W114.00-1ESE, EBS, SEBE, EBNFIRST PART FRESH GALES, LATTER MODERATE INTERMIXED WITH SQUALLSFIRST PART FAIRSMOOTH WATERLATTER CLOUDY0000000114311
1750-06-08T14:00-15.45-26.3311215.4PALMASBW3/4W115.00-1EBS, E, ESEA MODERATE GALE INTERMIXED WITH SQUALLSLARGE SWELL FROM ECLOUDY0000000114312
1750-06-09T14:00-17.37-26.1310015.4PALMAS1/2E123.00-1EBS, EBN, E, ESE, EBSA MODERATE GALE INTERMIXED WITH SQUALLSFIRST PART FAIRLATTER CLOUDY0000000114313
1750-06-10T14:00-19.37-25.759015.4PALMAS11E119.000E, EBN, EBS, EA MODERATE GALE INTERMIXED SQUALLSCLOUDY0000000114314
1750-06-11T14:00-20.80-24.8832615.4PALMAS31E98.000EBN, NEBE, ENE, NWBNA MODERATE GALEFAIRSMALL RAIN AT 10AMSMOOTH WATER0100000114315
1750-06-12T14:00-21.65-23.7523615.4PALMASE3/4E93.000NWBW, NWBN, SWBWA MODERATE GALEFAIR, LIGHTNING AT 3AMAT 6AM HAZY0000100114316
1750-06-13T14:00-22.17-22.762032.6PALMAS62E73.000SW, SWBS, S, SBE, SSWN11FIRST PART A MODERATE GALE, LATTER LIGHT BREEZESFIRST PART FAIRLATTER CLOUDY0000000114317
1750-06-14T14:00-22.62-22.761604.6PALMAS65.002S, SEBS, ESE, SSELIGHT GALESRAIN AT 11PM AND 1AMLARGE SWELL FROM SWCLOUDY0100000114318
1750-06-15T14:00-24.15-23.8612619.0PALMAS36W125.002SE, SEBS, SE, SEBEFRESH GALES AND SQUALLYSMALL RAIN AT 1AMLARGE SWELL FROM SCLOUDY0100000114319
1750-06-16T14:00-26.03-23.959215.4PALMAS4W127.002SEBE, ESE, EBS, EN12MODERATE GALESSMALL SWELL FROM SHAZY0000000114320
1750-06-17T14:00-28.17-23.457115.4PALMAS13E138.003E, EBN, ENEA MODERATE GALE INTERMIXED WITH SQUALLSFAIRSMOOTH WATER0000000114321
1750-06-18T13:00-30.47-22.351119.0PALMASSE3/4E161.000ENE, NEBN, ENE, N, NBE8NM N OF ACCTA FRESH GALESMOOTH WATERCLOUDY0000000114322
1750-06-19T13:00-31.48-20.012319.0PALMAE24S154.000NNE, NBE, NNEA FRESH GALE AND SQUALLYRAINCLOUDY AND HAZY0100000114323
1750-06-20T13:00-31.77-18.3620319.0PALMAE10S101.000NWBW, SW, SBW, SSWFIRST PART MODERATE, LATTER A FRESH GALE AND SQUALLYRAIN AT 1PM, 2AM AND 6AMLARGE SEACLOUDY0100000114324
1750-06-21T13:00-31.77-15.4620019.0PALMAE174.00-3SSWFRESH GALES WITH SQUALLY WEATHERFAIR AT 11AMRAINLARGE SEA0100000114325
1750-06-22T13:00-31.90-14.08871.0PALMAE1/2S86.00-3SWBS, SSW, S, EFIRST PART FRESH GALE, LATTER LIGHT AIRSLARGE SWELL FROM S0000000114326
1750-06-23T13:00-31.77-13.3317722.6PALMAE10N46.00-3NEBE, NE, NWBW, W, SFIRST PART LIGHT GALES, LATTER PART STRONG GALES AND HARD SQUALLSFIRST PART HEAVY RAINLARGE SEA0100100114327
1750-06-24T13:00-31.63-11.3122019.0PALMAE4N122.00-5SWBS, SSW, SWFRESH GALES WITH HARD SQUALLSLARGE SWELL FROM S0000000114328
1750-06-25T13:00-32.40-9.2527615.4PALMAESE1/4S110.00-5SWBS, WBS, WSW, WBNFIRST PART MODERATE GALE, MIDDLE AND LATTER INTERMIXED WITH SQUALLSFIRST PART FAIRSMALL RAIN 4AMLARGE SWELL FROM SLATTER CLOUDY0100000114329
1750-06-26T13:00-32.65-8.523221.0PALMAE29S35.00-4WSW, S, SEBE, ESE, NWBNFIRST PART MODERATE GALE, LATTER LIGHT AIRS INTERMIXED WITH SQUALLSFIRST PART FAIR, LIGHTNING AT 7PMRAIN AT 4PM, 1AM, 5-6AMLARGE SEA FROM SLATTER CLOUDY0100100114330
1750-06-27T12:00-33.97-6.6030819.0PALMAE39S126.00-7NNW, NWBW, NNW, NWFIRST PART LIGHT BREEZES, MIDDLE AND LATTER FRESH GALES WITH SQUALLY WEATHERFAIRSMALL RAIN AT 1AMLARGE SEA0100000114331
1750-06-28T12:00-34.33-4.0730819.0PALMAE9S143.00-7NW, NWBW, WNW, NWA FRESH GALE WITH SQUALLSRAINSMOOTH WATER0100000114332
1750-06-29T12:00-34.90-1.542614.6PALMAEBS1/4S138.00-9NWBN, WNW, WBS, WFIRST PART FRESH GALE, LATTER LIGHT GALESLATTER FAIRDRIZZLING RAIN AT 9PMLARGE SWELL FROM WFIRST PART HAZY0100000114333
1750-06-30T12:00-35.120.153064.6PALMAE9S85.00-9W, WBN, NWLIGHT GALESLARGE SWELL FROM WHAZY0000000114334
1750-07-01T12:00-35.331.9532915.4PALMAE8S93.00-9SWBW, W, NW, NNWFIRST PART LIGHT GALES, LATTER MODERATE GALE INTERMIXED WITH SQUALLY WEATHERFIRST PART FAIRLATTER RAINLATTER SMOOTH WATER0100000114335
1750-07-02T12:00-35.224.7816819.0PALMAE1/4N153.00-12WSW, SWBS, S, SSW, SFRESH GALES WITH VERY HARD SQUALLSLIGHTNING AT 2AMHEAVY RAINLARGE SEA FROM SW0100100114336
1750-07-03T12:00-35.476.7525819.0PALMAE2S105.00-12S, SBW, SW, SWBS, WFIRST AND LATTER PARTS FRESH GALES AND SQUALLY, MIDDLE PART LIGHT WINDS AND VARIABLESMOOTH WATERCLOUDY AND HAZY0000000114337
1750-07-04T11:00-35.609.3720019.0PALMAE3S-14W, SWBW, SBW, SWBSFRESH GALES WITH VERY HARD SQUALLSRAINLARGE SEA0100000114338
1750-07-05T11:00-35.6311.272566.7PALMAE?S101.00-14SWBS, SW, SSW, WFIRST PART FRESH GALES WITH VERY HARD SQUALLS, LATTER MODERATELATTER FAIR0000000114339
1750-07-06T11:00-36.1014.1329819.0PALMAE10S162.00-17NW, W, SW, NWBW, NWFRESH GALES AND HARD SQUALLSTHICKVERY LARGE SEA0000000114340
1750-07-07T11:00-35.9316.1327622.6PALMAE1/2N107.00-17NW, NWBW, NWBN, WNWSTRONG GALES AND HARD SQUALLSSMALL RAIN 3PMVERY LARGE SEACLOUDY0100000114341
1750-07-08T11:00-35.3518.50274PALMAE16N129.00-19WNW, NWBW, WSW, WNWFIRST AND MIDDLE PARTS FRESH GALES AND SQUALLYLIGHTNING FROM WLARGE SWELL FROM W0000100114342
1750-07-09T11:00-35.3519.90942.6CAPE LAGULLASNEBE12S10W36.00-19NWBW, WBN, SWBS, N, ESELIGHT BREEZES INTERMIXED WITH CALMSFIRST AND LATTER PARTS FAIRLARGE SWELLMIDDLE CLOUDY,0000000a trivial correction was made in this observation114343
1750-07-10T11:00-36.1220.33710.0CAPE LAGULLASS29E49.00-19ESE, E, EBS, EFIRST PART LIGHT GALES, LATTER CALMLARGE SWELLFIRST PART CLOUDY0000000a trivial correction was made in this observation114344
1750-07-11T11:00-36.1220.45710.0CAPE LAGULLASE8.00-19NE, NEBE, SSW, SBW, EESTRONGMOST PART CALM INTERMIXED WITH LIGHT AIRSSMALL SWELLHAZY0000000a trivial correction was made in this observation114345
1750-07-12T11:00-36.1522.4534119.0CAPE LAGULLASE1S120.00-19EBN, NE, NW, NFIRST PART LIGHT GALES, LATTER FRESH GALESFIRST PART FAIRSMALL SEALATTER CLOUDY0000000a trivial correction was made in this observation114346
1750-07-13T10:00-35.7725.1827226.8CAPE LAGULLASE8N166.00-21WNW, NWBN, WBN, WNWHARD GALES AND SQUALLYLIGHTNING FROM NE AT 5AMVERY LARGE SEA0000100a trivial correction was made in this observation114347
1750-07-14T10:00-35.9026.2322727.4CAPE LAGULLASE7S40.00-21WNW, WSWVERY HARD GALESTHUNDER AND LIGHTNING AT 10-12PM AND 5-6AMRAIN AT 7PM, HAIL AT 11PMLARGE SEADARK CLOUDY WEATHER0100110a trivial correction was made in this observation114348
1750-07-15T10:00-35.6728.12292CAPE LAGULLASE7N114.00-23SW, SWBW, WNW, NWFIRST PART FRESH GALES WITH HARD SQUALLSRAIN AT 5AMFIRST PART LARGE SEA, LATTER SMOOTH WATERFIRST PART CLOUDY0100000a trivial correction was made in this observation114349
1750-07-16T10:00-34.9230.122219.0CAPE LAGULLASE25N124.00-23WNW, NBE, NE, NEBN, NEFIRST PART MODERATE GALE, LATTER FRESH GALESFIRST PART FAIRSMALL SWELL FROM NELATTER CLOUDY0000000a trivial correction was made in this observation114350
1750-07-17T10:00-34.2232.1033719.0CAPE LAGULLASEBN3/4N129.00-23NEBN, NBW, N, NBW, NFRESH GALES AND VERY HARD SQUALLSGREAT SEAHAZY0000000a trivial correction was made in this observation114351
1750-07-18T10:00-32.9233.5733615.4CAPE LAGULLASE42N118.00-24NNW, WNW, NW, NMODERATE GALELARGE SWELL FROM WHAZY0000000a trivial correction was made in this observation114352
1750-07-19T10:00-31.9833.981900.0CAPE LAGULLASN19E38.00-24WBS, WSW, SW, SWBSN15FIRST PART LIGHT GALES, LATTER CALMFAIRLARGE SWELL FROM WNW0000000a trivial correction was made in this observation114353
1750-07-20T10:00-31.0534.38664.6CAPE LAGULLASN19E62.00-24ESE, SEBE, EBS, SEBE, EBS, EFIRST PART CALM, MIDDLE AND LATTER LIGHT GALESFAIRLARGE SWELL FROM NW0000000a trivial correction was made in this observation114354
1750-07-21T10:00-29.7834.9711115.4CAPE LAGULLASN25E92.00-24ESE, SE, SEBS, SEMODERATE GALESGREAT DEAL OF LIGHTNING FROM NLARGE SWELL FROM SELOOKING VERY BLACK0000100a trivial correction was made in this observation114355
1750-07-22T10:00-27.8336.7217919.0CAPE LAGULLASN42E148.00-24SSE, SBE, SBE, SSWA FRESH GALE AND SQUALLYRAIN AT 3PMLARGE SWELL FROM SECLOUDY0100000a trivial correction was made in this observation114356
1750-07-23T09:00-26.0538.2815615.4CAPE LAGULLASN41E140.00-24SWBS, SSE, SMODERATE GALESFAIRLARGE SWELL FROM S0000000a trivial correction was made in this observation114357
1750-07-24T09:00-24.2539.9314519.0CAPE LAGULLASN43E151.00-24SW, SSW, SBW, SBEA FRESH GALEFAIRSMOOTH WATER0000000a trivial correction was made in this observation114358
1750-07-25T09:00-23.2241.2012219.0CAPE LAGULLASE41N81.00-24S, SBE, SSE, SEBSNFRESH GALES AND SQUALLYSHORT TUMBLING SEA0000000a trivial correction was made in this observation114359
1750-07-26T00:00-22.4816915.4MADAGASCARSEBE17E TO NBWSSE, SBE, SSE, SBENVERY STRONGFIRST AND MIDDLE PARTS FRESH GALES, LATTER MODERATE GALESHAZY0000000a trivial correction was made in this observation114360
1750-07-27T00:00-21.48794.6CAPE LAGULLASNBE TO NSWBW, S, SBE, EBNLIGHT GALESFAIRSMOOTH WATER0000000a trivial correction was made in this observation114361
1750-07-28T00:00-20.701134.6CAPE LAGULLASNBW TO NEBNNEBE, SEBE, W, S, ESELIGHT GALESFAIRSMOOTH WATER0000000a trivial correction was made in this observation114362
1750-07-29T00:00-20.6713515.4CAPE LAGULLASNE TO SEBEENE, NWBN, SEBE, SEMODERATE GALESFAIR0000000a trivial correction was made in this observation114363