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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 JUPITER cruise from St. Helena to Table Bay started at 1797-09-20 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749929, 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: -28.507188 * Median Longitude: 0.586562 * South-bound Latitude: -35.780000 * West-bound Longitude: -6.320000 * North-bound Latitude: -17.270000 * East-bound Longitude: 17.000000
Date/Time Start: 1797-09-20T00:00:00 * Date/Time End: 1797-10-23T11:00:00
Event(s):
Jupiter_17970920_NMM_ADM/L/J149 * Latitude Start: -15.890000 * Longitude Start: -5.750000 * Latitude End: -34.430000 * Longitude End: 16.950000 * Date/Time Start: 1797-09-20T00:00:00 * Date/Time End: 1797-10-23T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Jupiter (4th Rate Frigate), Voyage: St Helena - Table Bay, 1st Observer: George Losack (Captain), Company: Royal Navy, Other ship information: 50G 1044BM
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 Present weatherwwWeather description
15 Precipitation descriptionPrecip descr
16 ClearnessClearness
17 GustsGusts1 If wind gusts are reported
18 Precipitation/RainRain1 If rain was reported
19 FogFog1 If fog was reported
20 Snow typeSnow1 If snow was reported
21 ThunderThunder1 If thunder and or lightning was reported
22 HailHail1 If hail was reported
23 Sea iceSea ice1 If sea-ice or icebergs were reported
24 CommentComment
25 IdentificationIDCLIWOC 2.1 line number
Size:
648 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 
ww
(Weather description)
15 
Precip descr
16 
Clearness
17 
Gusts
(1 If wind gusts are reported)
18 
Rain
(1 If rain was reported)
19 
Fog
(1 If fog was reported)
20 
Snow
(1 If snow was reported)
21 
Thunder
(1 If thunder and or lightning...)
22 
Hail
(1 If hail was reported)
23 
Sea ice
(1 If sea-ice or icebergs were...)
24 
Comment
25 
ID
(CLIWOC 2.1 line number)
1797-09-20T00:00-14.9512422.6ST HELENAS44W11SE, SEBESTRONG GALES AND SQUALLY0000000126926
1797-09-21T00:00-15.601246.7ST HELENAS25E8SEBEFRESH BREEZES, AM MODERATEAM SOME RAINCLEAR0100000126927
1797-09-22T12:00-17.27-6.32118ST HELENAN19E29S19W86.00-17SESQUALLYRAIN0100000126928
1797-09-23T12:00-19.17-6.07119CAPE GOOD HOPES55W526S7E115.00-16SESQUALLYRAIN0100000126929
1797-09-24T12:00-21.12-6.07976.7CAPE GOOD HOPES58E508S117.00-16ESESTRONG BREEZES AND SQUALLY, AM MODERATEAM CLOUDY0000000126930
1797-09-25T12:00-22.28-5.40636.7CAPE GOOD HOPES60E483S28E79.00-16EBNMODERATEFAIR0000000126931
1797-09-26T12:00-22.65-5.333621.0CAPE GOOD HOPES6E474S10E22.00-16VARIABLELIGHT AIRS AND CALM0000000126932
1797-09-27T12:00-22.72-5.500.0CAPE GOOD HOPES60E477S67W11.00-16CALMCLEAR0000000126933
1797-09-28T12:00-23.52-5.05742.6CAPE GOOD HOPES62E463S28E54.00-16ELIGHT BREEZESPLEASANT WEATHER0000000126934
1797-09-29T12:00-23.90-4.57402.6CAPE GOOD HOPES62E452S50E36.00-16NEBELIGHT BREEZESCLEAR0000000126935
1797-09-30T12:00-24.08-2.95299CAPE GOOD HOPES61E425S83E90.00-16SW, NWLIGHT BREEZES, AM SQUALLYPLEASANT WEATHERAM RAIN0100000126936
1797-10-01T12:00-24.80-3.271539.3CAPE GOOD HOPES63E422S21W46.00-16SBEFRESH BREEZESCLEAR0000000126937
1797-10-02T12:00-25.32-3.671422.6CAPE GOOD HOPES65E423S36W38.00-16SSELIGHT BREEZESPLEASANT WEATHER0000000126938
1797-10-03T12:00-25.92-4.033622.6CAPE GOOD HOPES66E423S29W41.00-16VARIABLELIGHT BREEZESPLEASANT WEATHER0000000126939
1797-10-04T12:00-26.03-3.973622.6CAPE GOOD HOPES67E418S9E26.00-16VARIABLELIGHT BREEZESPLEASANT WEATHER0000000126940
1797-10-05T12:00-27.00-2.333319.3CAPE GOOD HOPES67E386S66E96.00-18SW, NBWFRESH BREEZESAM CLOUDY0000000126941
1797-10-06T12:00-27.80-2.18208CAPE GOOD HOPES69E376S10E49.00-17SE, SWFRESH BREEZES, AM SQUALLYAM RAINCLOUDY0100000126942
1797-10-07T12:00-28.98-2.181079.3CAPE GOOD HOPES73E333S71.00-17EBN, SEBEFRESH BREEZESCLOUDY0000000126943
1797-10-08T12:00-29.13-2.033621.0CAPE GOOD HOPES73E364S45E12.00-17VARIABLELIGHT BREEZES INCLINING TO CALMS0000000126944
1797-10-09T12:00-29.57-1.85282.6CAPE GOOD HOPES74E356S20E28.00-17NELIGHT AIRS INCLINING TO CALMS, AM LIGHT BREEZESAM FAIR0000000126945
1797-10-10T12:00-30.37-1.31286.7CAPE GOOD HOPES76E340S37E60.00-17NEMODERATEFAIR0000000126946
1797-10-11T12:00-30.90-0.833432.6CAPE GOOD HOPES78E326S49E46.00-17NLIGHT BREEZESPLEASANT WEATHER0000000126947
1797-10-12T12:00-31.62-0.233436.7CAPE GOOD HOPES80E307S43E59.00-17NW, NMODERATEPLEASANT WEATHER0000000a trivial correction was made in this observation126948
1797-10-13T12:00-32.450.60286.7CAPE GOOD HOPES82E289S45E75.00-17NNE, NEMODERATECLOUDY0000000a trivial correction was made in this observation126949
1797-10-14T12:00-33.421.59299.3CAPE GOOD HOPES86E266S45E82.00-16NEFRESH BREEZESRAIN0100000a trivial correction was made in this observation126950
1797-10-15T12:00-33.823.0346.7CAPE GOOD HOPES87E246S73E83.00-19NNESTRONG BREEZES, AM MODERATERAINAM CLOUDY0100000a trivial correction was made in this observation126951
1797-10-16T12:00-34.324.6433012.3CAPE GOOD HOPEE209S71E94.00-19WNW, NBWFRESH BREEZES, AM STRONG BREEZESAM RAINCLOUDY0100000a trivial correction was made in this observation126952
1797-10-17T11:00-34.387.772719.3CAPE GOOD HOPEE155E163.00-22WBS, WNWSTRONG BREEZES, AM FRESH BREEZES WITH FREQUENT SQUALLSCLOUDY0000000a trivial correction was made in this observation126953
1797-10-18T11:00-34.4810.322039.3CAPE GOOD HOPEE110S87E135.00-22WSW, SWFRESH BREEZESCLOUDY0000000a trivial correction was made in this observation126954
1797-10-19T11:00-34.0811.821816.7CAPE GOOD HOPEE87N73E85.00-22S, SSWMODERATECLOUDY0000000a trivial correction was made in this observation126955
1797-10-20T11:00-35.4811.361131.0CAPE POINTN76E89S10W85.00-22ESE, SEFINE BREEZES, AM LIGHT AIRSHAZY0000000a trivial correction was made in this observation126956
1797-10-21T11:00-35.7811.52579.3CAPE POINTN75E86S42W24.00-22NW, EBNSTEADY BREEZESHAZY0000000a trivial correction was made in this observation126957
1797-10-22T11:00-35.4714.2629122.6CAPE POINTN58E42N82E144.00-24SW, NWSTRONG GALESCLOUDY0000000a trivial correction was made in this observation126958
1797-10-23T11:00-34.4017.002012.6CAPE POINTE26N66E157.00-24VARIABLE, SWSTRONG GALES, AM LIGHT WINDS AND VARIABLECLOUDY0000000a trivial correction was made in this observation126959