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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 ZEEMERCUUR cruise from Ramekens to Guinea started at 1787-12-26 [dataset]. Rijksarchief Zeeland, Middelburg, Netherland, PANGAEA, https://doi.org/10.1594/PANGAEA.752967, 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: 37.010000 * Median Longitude: -15.226087 * South-bound Latitude: 28.030000 * West-bound Longitude: -19.470000 * North-bound Latitude: 48.780000 * East-bound Longitude: -5.020000
Date/Time Start: 1787-12-26T12:00:00 * Date/Time End: 1788-01-17T13:00:00
Event(s):
Zeemercuur_17871226_MCC_20_1405 * Latitude Start: 51.430000 * Longitude Start: 3.490000 * Latitude End: 4.480000 * Longitude End: 1.680000 * Date/Time Start: 1787-12-26T00:00:00 * Date/Time End: 1788-01-17T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Zeemercuur, Voyage: Ramekens - Guinea, 1st Observer: C. Van Kakom (Kapitein), Company: MCC
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
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 Precipitation descriptionPrecip descr
16 Cloud typeCloud type
17 ClearnessClearness
18 GustsGusts1 If wind gusts are reported
19 Precipitation/RainRain1 If rain was reported
20 FogFog1 If fog was reported
21 Snow typeSnow1 If snow was reported
22 ThunderThunder1 If thunder and or lightning was reported
23 HailHail1 If hail was reported
24 Sea iceSea ice1 If sea-ice or icebergs were reported
25 IdentificationIDCLIWOC 2.1 line number
Size:
432 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Date/Time

Latitude

Longitude

dd [deg]

ff [m/s]

Image no/name

Watch

Glasses

Course
10 
Distance [arbitrary units]
11 
Decl [deg]
12 
Wind dir descr
13 
Wind force descr
14 
ww
15 
Precip descr
16 
Cloud type
17 
Clearness
18 
Gusts
19 
Rain
20 
Fog
21 
Snow
22 
Thunder
23 
Hail
24 
Sea ice
25 
ID
1787-12-26T12:0048.78-5.0229212.3MCC_20_1405_0005VM8ZWTW24.00-23NWSTIJVE KOELTEOVERDRIJVENDE LUCHT0000000285176
1787-12-27T13:0047.48-8.082312.3MCC_20_1405_0005VM8ZWTW 1/2 W35.00-22NOSTIJVE KOELTE0000000285177
1787-12-28T13:0045.88-10.406819.0MCC_20_1405_0006VM8ZW34.00-22OONDERZEILSKOELTEKLARE LUCHT TOT BETROKKEN LUCHT0000000285178
1787-12-29T13:0044.37-12.55234.6MCC_20_1405_0006VM8ZW32.00-22ONO-NOBRAMZEILSKOELTE0000000285179
1787-12-30T13:0042.87-13.632032.6MCC_20_1405_0006VM8ZZW 1/2 W25.00-22WTZ-ZWGEMENE KOELTE0000000285180
1787-12-31T13:0043.07-14.9815822.6MCC_20_1405_0006VM8WTN15.00-22ZSTIJVE ONDERZEILSKOELTE EN AANNEMENDEMISTMOTREGEN0110000285181
1788-01-01T13:0042.73-14.422029.3MCC_20_1405_0007VM8ZO 1/2 O8.00-23ZWSTIJVE KOELTE TOT GEREEFDE MARSZEILSKOELTEMISTMOTREGEN0110000285182
1788-01-02T13:0042.20-13.5322719.0MCC_20_1405_0007VM8ZO 1/2 O12.50-21WZWONDERZEILSKOELTE0000000285183
1788-01-03T13:0041.35-15.6729425.5MCC_20_1405_0007VM8ZOTO11.00-21WNW-NWAFNEMENDE STORMREGENBUIENOVERDRIJVENDE LUCHT1100000285184
1788-01-04T13:0040.35-12.802722.9MCC_20_1405_0007VM8ZO 1/2 O15.00-21ZZW-WNWAANNEMENDE KOELTE0000000285185
1788-01-05T13:0039.62-13.1527213.1MCC_20_1405_0008VM8ZTW14.00-21WNWSTIJVE DUBBEL GEREEFDE MARSZEILSKOELTEDIK VAN MISTMET MOTREGEN0110000285186
1788-01-06T13:0037.62-14.132942.0MCC_20_1405_0008VM8ZZW30.00-21NWAFNEMENDE KOELTEMISTMOTREGENGRAUWE LUCHT0110000285187
1788-01-07T13:0036.08-16.403197.3MCC_20_1405_0008VM8ZW 1/2 W36.00-19N-NNWGETOPTE MARSZEILSKOELTEGRAUWE LUCHT0000000285188
1788-01-08T13:0033.98-18.553424.6MCC_20_1405_0008VM8ZWTZ36.00-18NNW-NBRAMZEILSKOELTEREGENOVERDRIJVENDE LUCHT0100000285189
1788-01-09T13:0032.48-18.053544.6MCC_20_1405_0009VM8Z23.00-17NTOBRAMZEILSKOELTEWOLKDRIJVENDE LUCHT0000000285190
1788-01-10T13:0030.73-18.053544.6MCC_20_1405_0009VM8Z26.00-17NTOGEMENELEIJZEIJLS KOELTE EN BRAMZEILSKOELTE0000000285191
1788-01-11T13:0028.93-18.055112.3MCC_20_1405_0009VM8Z27.00-17ONOSTIJVE KOELTESOMS REGEN0100000285192
1788-01-12T13:0028.18-19.3511812.3MCC_20_1405_0009VM8ZW16.00-17ZOSTIJVE KOELTE0000000285193
1788-01-13T13:0028.75-18.701182.0MCC_20_1405_0010VM8NNO12.00-17ZOAFNEMENDE KOELTEDIKKE BETROKKEN LUCHT0000000285194
1788-01-14T13:0028.03-18.00186MCC_20_1405_0010VM8NOTO11.00-17Z-ZZW0000000285195
1788-01-15T13:0029.02-18.402534.6MCC_20_1405_0010VM8WTN6.00-17WNW-WBRAMZEILSKOELTE0000000285196
1788-01-16T13:0029.28-18.821632.6MCC_20_1405_0010VM8NWTW6.00-17ZW-ZBRAMZEILSKOELTE TOT LABBER KOELTEMOOI WEER0000000285197
1788-01-17T13:0029.45-19.471632.6MCC_20_1405_0011VM8WNW9.00-17Z-ZLABBER EN STILLETJES0000000285198