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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 MERCURIUS cruise from San Thomé to Rammekens started at 1756-08-24 [dataset]. Rijksarchief Zeeland, Middelburg, Netherland, PANGAEA, https://doi.org/10.1594/PANGAEA.750726, 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: -1.677333 * Median Longitude: -0.722000 * South-bound Latitude: -2.650000 * West-bound Longitude: -13.050000 * North-bound Latitude: -0.830000 * East-bound Longitude: 8.680000
Date/Time Start: 1756-08-24T11:00:00 * Date/Time End: 1756-09-07T13:00:00
Event(s):
Mercurius_17560824_MCC_20_752 * Latitude Start: -0.830000 * Longitude Start: 8.680000 * Latitude End: 51.430000 * Longitude End: 3.490000 * Date/Time Start: 1756-08-24T00:00:00 * Date/Time End: 1756-09-07T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Mercurius (Fregat), Voyage: San Thomé - Rammekens, 1st Observer: Hendrik Landleven (Kapitein), Company: MCC, Other ship information: BEMAND MET 29 KOPPEN, GEMONTEERT MET TWAALF GOTELINGEN, WAARVAN 6 TWEE PONDERS EN 6 EENPONDERS HIJN 4 STAARTSTUKKEN EN 4 DONDERBUSSEN.
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
Image number/nameImage no/nameIdentification Number of the original image
WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
CommentCommentLife on board
10 CourseCourseCourse of the ship during the past 24 hours
11 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
12 CommentCommentOther remarks, that were not possible to put in the other remark fields
13 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.
14 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.
15 Wind force descriptionWind force descrAll reported wind forces on this day
16 Present weatherwwWeather description
17 Precipitation descriptionPrecip descr
18 Cloud typeCloud type
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:
289 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...)

Image no/name
(Identification Number of the ...)

Watch
(Name of the period of 4 hours...)

Glasses
(Number of glasses within a wa...)

Comment
(Life on board)
10 
Course
(Course of the ship during the...)
11 
Distance [arbitrary units]
(Distance travelled during the...)
12 
Comment
(Other remarks, that were not ...)
13 
Decl [deg]
(It is generally accepted by t...)
14 
Wind dir descr
(All reported wind directions ...)
15 
Wind force descr
(All reported wind forces on t...)
16 
ww
(Weather description)
17 
Precip descr
18 
Cloud type
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)
1756-08-24T11:00-0.838.681854.0MCC_20_752_0044VM8ZTW1/2W7.50SETTEN BESTEK-18ZZWSLAPPE BRAMZEILSKOELTEBETROKKEN LUCHT0000000167374
1756-08-25T11:00-0.957.551854.0MCC_20_752_0044VM8W1/2Z17.00-18ZZWSLAPPE BRAMZEILSKOELTEBETROKKEN LUCHT0000000167375
1756-08-26T12:00-1.226.031864.6MCC_20_752_0044VM8WTZ20.50-17ZZWGEMENE BRAMZEILSKOELTEBETROKKEN LUCHT0000000167376
1756-08-27T12:00-0.875.031864.0MCC_20_752_0044VM8NWTW2/3W19.75-17ZTW-ZZWSLAPPE BRAMZEILSKOELTEGOED WEER0000000167377
1756-08-28T12:00-0.874.001862.6MCC_20_752_0044VM8W1/3Z15.50-17ZZWSLAPPE KOELTEBUIIGE LUCHTREGEN1100000167378
1756-08-29T12:00-1.183.121634.6MCC_20_752_0045VM8WZW1/4W14.50-17ZZW-ZGEMENE BRAMZEILSKOELTEGOED WEER0000000167379
1756-08-30T12:00-1.582.151654.0MCC_20_752_0045VM8WZW16.00-15ZSLAPPE BRAMZEILSKOELTEGOED WEERBEWOLKTE LUCHT0000000167380
1756-08-31T12:00-2.651.071654.6MCC_20_752_0045VM8ZW22.75-15ZGEMENE BRAMZEILSKOELTEGOED WEER0000000167381
1756-09-01T12:00-2.65-0.631654.0MCC_20_752_0045VM8W25.50-15ZSLAPPE - GEMENE BRAMZEILSKOELTEBETROKKEN LUCHT0000000167382
1756-09-02T12:00-2.65-2.631564.0MCC_20_752_0045VM8W25.50-13ZTOSLAPPE BRAMZEILSKOELTEGOED WEER0000000167383
1756-09-03T12:00-1.85-4.801664.9MCC_20_752_0045VM8WNW3/8W39.00-14ZFRISSE BRAMZEILSKOELTEBEWOLKTE LUCHT0000000167384
1756-09-04T12:00-1.78-7.251554.6MCC_20_752_0045VM8WTN3/8W37.25-14Z-ZTOSTIJVE-GEMENE BRAMZEILSKOELTEGOED WEER0000000167385
1756-09-05T13:00-2.13-9.171464.0MCC_20_752_0045VM8WTZ29.50-12ZTO-ZZOSLAPPE-GEMENE BRAMZEILSKOELTEGOED WEER0000000167386
1756-09-06T13:00-2.13-10.931234.0MCC_20_752_0046VM8W26.50-12ZOSLAPPE - GEMENE BRAMZEILSKOELTEGOED WEER0000000167387
1756-09-07T13:00-1.82-13.051264.6MCC_20_752_0046VM8OVERLEDEN MEESTER PIETER ROODEWTN1/4W32.25-9ZOBRAMZEILSKOELTEGOED WEER0000000167388