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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 ISIS cruise from Plymouth to St. Helena started at 1796-08-10 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749838, 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: 3.175362 * Median Longitude: -16.219710 * South-bound Latitude: -24.280000 * West-bound Longitude: -26.260000 * North-bound Latitude: 48.250000 * East-bound Longitude: -1.930000
Date/Time Start: 1796-08-10T12:00:00 * Date/Time End: 1796-10-20T12:00:00
Event(s):
Isis_17960810_NMM_ADM/L/J132 * Latitude Start: 50.299000 * Longitude Start: -4.150000 * Latitude End: -15.890000 * Longitude End: -5.750000 * Date/Time Start: 1796-08-10T00:00:00 * Date/Time End: 1796-10-20T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Isis (4th Rate Frigate), Voyage: Plymouth - St Helena, 1st Observer: Robert Watson (Captain), 2nd Observer: William Young (1st Officer/Master), 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
--1 If position is considered to be coastal (in port or near coastal disturbances)
10 CourseCourseCourse of the ship during the past 24 hours
11 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
12 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.
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 Wind force descriptionWind force descrAll reported wind forces on this day
15 Present weatherwwWeather description
16 Precipitation descriptionPrecip descr
17 State of the sea descriptionState sea 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 CommentComment
27 IdentificationIDCLIWOC 2.1 line number
Size:
1305 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)

-
(1 If position is considered t...)
10 
Course
(Course of the ship during the...)
11 
Distance [arbitrary units]
(Distance travelled during the...)
12 
Decl [deg]
(It is generally accepted by t...)
13 
Wind dir descr
(All reported wind directions ...)
14 
Wind force descr
(All reported wind forces on t...)
15 
ww
(Weather description)
16 
Precip descr
17 
State sea 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 
Comment
27 
ID
(CLIWOC 2.1 line number)
1796-08-10T12:0048.25-6.552916.7USHANTN77E11S27W115.00-24QUARTERLY, NWMODERATEHAZY WEATHER0000000120749
1796-08-11T13:0046.88-8.323256.7CAPE FINISTERES29W81S41W109.00-24NE, ENE, NBWMODERATE BREEZESSWELL FROM THE NWCLOUDY WEATHER0000000120750
1796-08-12T13:0044.65-10.48779.3CAPE FINISTERES27W81S34W168.00-24NNE, EBSFRESH BREEZESCLOUDY WEATHER0000000120751
1796-08-13T13:0043.23-11.672911.0CAPE FINISTERES78E34S31W99.00-24QUARTERLY, NWFRESH BREEZES INCLINING TO CALM0000000a trivial correction was made in this observation120752
1796-08-14T13:0040.73-13.233386.7PORTO SANCTOS18W163S25W144.00-22NNE, NMODERATETHICK WEATHER0000000120753
1796-08-15T13:0037.92-14.8519.3PORTO SANCTOS14W102S24W189.00-22NE, NNEFRESH BREEZESFINE WEATHER0000000120754
1796-08-16T13:0035.80-15.52146.7PORTO SANCTOS13W58S14W131.00-20NEBNMODERATE BREEZESFINE WEATHER0000000120755
1796-08-17T13:0033.73-16.03146.7PORTO SANCTOS17W17S12W125.00-20NEBNMODERATE BREEZESFINE WEATHER0000000120756
1796-08-18T13:0032.48-17.07266.7TABLE LANDNWBN11S34W94.00-19NNW, NNE, N, NEMODERATE BREEZESFINE WEATHER0000000120757
1796-08-22T13:0030.48-17.782412.6PALMAS7E3S15W138.00-18NNW, VARIABLE, WBSLIGHT BREEZESFINE WEATHER0000000120758
1796-08-23T13:0027.37-18.9225319.0ST ANTHONYS30W234S13W197.00-17SEBS, NEBE, WFRESH GALESCLEAR WEATHER0000000120759
1796-08-24T13:0024.86-20.12289.3ST ANTHONYS33W176S20W170.00-17EBN, NEBN, NEFRESH BREEZESFINE WEATHER0000000120760
1796-08-25T13:0022.35-21.71529.3ST ANTHONYS36W117S27W187.00-16ENEFRESH BREEZESFINE WEATHER0000000120761
1796-08-26T14:0020.38-23.19319.3ST ANTHONYS39W67S31W148.00-14NEFRESH BREEZESFINE WEATHER0000000120762
1796-08-27T14:0018.32-24.71316.7ST ANTHONYS64W18S31W155.00-14NNE, NETHESE 24 HOURS MODERATETHESE 24 HOURS CLOUDY0000000120763
1796-08-28T14:0017.33-26.26566.7BRAVAS25E24S50W107.00-12NNE, ENETHESE 24 HOURS MODERATETHESE 24 HOURS CLOUDY0000000120764
1796-08-29T14:0015.98-25.25562.6JAGOS53E20S36E105.00-12EBN, ENELIGHT WINDSCLOUDY0000000120765
1796-08-30T14:0014.68-23.80332.6JAGOS42E11S64E29.00-12NEBN, NELIGHT WINDSCLOUDY0000000120766
1796-08-31T14:0013.72-23.471012.6JAGON15E11S19E61.00-12ENE, ESELIGHT WINDSSULTRY WEATHER0000000120767
1796-09-01T14:0012.65-23.05449.3JAGON12W35S21E69.00-12VARIABLE, SEBE, NEBEFRESH BREEZES AND SQUALLYSOME RAIN0000000120768
1796-09-02T14:0012.43-22.921479.3JAGOS14W40S23E19.00-11SSEFRESH BREEZES AND SQUALLY0000100120769
1796-09-03T14:0012.58-22.73569.3JAGON13W55S12E46.00-12ENEFRESH BREEZES AND SQUALLY0000100120770
1796-09-04T14:0011.48-22.773621.0JAGON13W57S11E6.00-11VARIABLELIGHT AIRSSHOWERS OF RAINCLOUDY1100000120771
1796-09-05T14:0010.18-22.95791.0JAGON11W84S7E73.00-11VARIABLE, ELIGHT AIRSCLOUDY0000000120772
1796-09-06T14:009.75-22.572141.0JAGON8W92S7E26.00-11SWLIGHT AIRS AND VARIABLESHOWERS OF RAIN1100000120773
1796-09-07T13:009.25-22.451672.6JAGON11W103S12E31.00-13VARIABLE, SLIGHT BREEZESSHOWERS OF RAIN1100100120774
1796-09-08T13:007.87-22.152469.3JAGOW12N148S12E85.00-13VARIABLE, WNW, WBSFRESH BREEZES AND SQUALLYRAIN0100000120775
1796-09-09T13:007.02-21.87362JAGON12E148S19E53.00-12W, SW, VARIABLESQUALLY WEATHERMUCH RAIN AT TIMES0100000120776
1796-09-10T13:007.12-21.153629.3JAGON17E150S28E17.00-12VARIABLE, WBS, VARIABLEFRESH BREEZES AND SQUALLYRAIN0100000120777
1796-09-11T13:006.20-20.772476.7JAGON8W164S23E60.00-12VARIABLE, WBSMODERATECLOUDY0000000120778
1796-09-12T13:005.68-20.58362JAGON18W178S20E32.00-12NNW, VARIABLEVARIABLE WEATHERHEAVY RAIN0100000120779
1796-09-13T13:005.22-19.953622.6JAGON21W191S33E71.00-12VARIABLELIGHT BREEZESSMALL RAIN0100000120780
1796-09-14T13:005.00-18.871796.7JAGON26W202S79E65.00-12VARIABLE, SSW, SBWMODERATE BREEZESCLOUDY0000000120781
1796-09-15T13:004.22-17.501796.7JAGON29W226S53E77.00-12VARIABLE, SWBS, SBWMODERATEFINE WEATHER0000000a trivial correction was made in this observation120782
1796-09-16T13:003.27-17.082102.6ST PAULSS7E197S38E72.00-15SWLIGHT BREEZESFINE WEATHER0000000120783
1796-09-17T13:002.57-16.022106.7ST MATTHEWS64E187S56E76.00-15SWMODERATE BREEZESCLEAR WEATHER0000000120784
1796-09-18T13:001.88-15.472119.3ST PAULSS85W224S39E52.00-14SWFRESH BREEZESCLOUDY0000000120785
1796-09-19T13:001.33-14.252119.3ST MATTHEWSS6E116S66W80.00-14SWFRESH BREEZESCLOUDY0000000120786
1796-09-20T13:000.82-15.552116.7ST PAULSW222S68W85.00-14SWMODERATEFINE WEATHER0000000120787
1796-09-21T13:00-0.12-16.121446.7ST PAULSN84W208S32W74.00-14SE, SSEMODERATEFINE, PLEASANT WEATHER0000000120788
1796-09-22T13:00-1.78-17.151212.6ASCENSIONS13E126S28W118.00-14SELIGHT BREEZESFINE WEATHER0000000120789
1796-09-23T13:00-3.25-17.931249.3ASCENSIONS48E118S17W98.00-11SEFRESH BREEZES AT TIMES0000000120790
1796-09-24T13:00-4.95-18.4712412.3ASCENSIONS54E102S17W109.00-11SETHESE 24 HOURS FRESH TRADESMALL RAINCLOUDY0100000120791
1796-09-25T13:00-7.12-19.3312412.3ASCENSIONS80E92S17W136.00-11SETHESE 24 HOURS FRESH TRADESMALL RAINCLOUDY0100000120792
1796-09-26T13:00-9.22-19.5212512.3ASCENSIONN59E45S05W127.00-10SETHESE 24 HOURS FRESH TRADESMALL RAINCLOUDY0100000120793
1796-09-27T13:00-11.35-19.751259.3ST HELENAS71E219S06W129.00-10SEFRESH BREEZES AND SQUALLY0000000120794
1796-09-28T13:00-13.55-19.621266.7ST HELENAS79E267S04E122.00-9SEMODERATEPLEASANT WEATHER0000000120795
1796-09-29T13:00-14.58-18.601266.7ST HELENAS84E258S39E93.00-9SELIGHT TRADEPLEASANT WEATHER0000000120796
1796-09-30T13:00-16.65-15.672249.3ST HELENAW85E176S54E210.00-12SWBWFRESH BREEZES0000000120797
1796-10-01T13:00-17.38-14.7036219.0ST HELENAW80E164S52E71.00-12VARIABLEFRESH GALES AT TIMESRAIN0100000120798
1796-10-02T13:00-17.30-14.032581.0ST HELENAN80E163S67E99.00-12SWBW, WLIGHT AIRSHEAVY SWELL0000000120799
1796-10-03T13:00-17.02-13.73361ST HELENAN82E137DRIFTING24.00-12CALMTHESE 24 HOURS PLEASANT WEATHER0000000120800
1796-10-04T13:00-16.62-13.30146ST HELENAN84E147N45E34.00-12SSE, SE, SSETHESE 24 HOURS PLEASANT WEATHER0000000120801
1796-10-05T13:00-17.70-13.551242.6ST HELENAW76E158S12W67.00-11SELIGHT BREEZESFINE WEATHER0000000120802
1796-10-06T13:00-19.63-13.931242.6ST HELENAW64E172S11W118.00-11SELIGHT BREEZESSHOWERS OF RAINFINE WEATHER1100000120803
1796-10-07T13:00-21.23-14.021249.3ST HELENAW56E191S02W96.00-11SEFRESH BREEZESCLEAR0000000120804
1796-10-08T13:00-22.72-13.701039.3ST HELENAN48E203S11E91.00-10E, VARIABLE, ESEFRESH BREEZESFLYING SHOWERS OF RAINCLEAR1100000120805
1796-10-09T13:00-23.65-12.831036.7ST HELENAN40E206S40E73.00-10ESEMODERATE BREEZESSOME RAIN AT TIMES0100000120806
1796-10-10T13:00-24.17-12.60352.6ST HELENAN38E209S23E34.00-10VARIABLE, NELITTLE WINDPLEASANT WEATHER0000000120807
1796-10-11T13:00-24.28-12.473612.6ST HELENAN37E206S45E10.00-13CALMLITTLE WINDPLEASANT WEATHER0000000120808
1796-10-12T13:00-24.10-11.033361.0ST HELENAN31E190N82E71.00-13NW, NBWLITTLE WIND INCLINABLE TO CALMPLEASANT WEATHER0000000120809
1796-10-13T13:00-23.65-8.45358ST HELENAW18E163N79E141.00-13N, NBEPLEASANT WEATHER0000000120810
1796-10-14T12:00-23.18-6.922781.0ST HELENAN9E145N72E92.00-15NBE, WNWFIRST PART FRESH BREEZES, LATTER PART LIGHT AIRSCLEAR WEATHER, LATTER FINE WEATHER0000000120811
1796-10-15T12:00-22.62-6.432781.0ST HELENAN5E134N38E43.00-15NEBE, WNWLIGHT AIRSFINE WEATHER0000000120812
1796-10-16T12:00-20.90-4.901199.3ST HELENAN11W102N42E138.00-16SETHESE 24 HOURS FRESH BREEZESTHESE 24 HOURS CLEAR0000000120813
1796-10-17T12:00-18.93-3.331199.3ST HELENAN37W75N34E142.00-16SETHESE 24 HOURS FRESH BREEZESTHESE 24 HOURS CLEAR0000000120814
1796-10-18T12:00-16.97-2.101166.7ST HELENAN74W75N31E109.00-19SEMODERATE BREEZESHAZY WEATHER0000000120815
1796-10-19T12:00-15.97-1.931166.7ST HELENAW74N9E60.00-19SEMODERATE BREEZESHAZY WEATHER0000000120816
1796-10-20T12:00-15.97-3.471186.7ST HELENAW88.00-17SEMODERATE BREEZESHAZY WEATHER0000000120817