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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 ASSISTANCE cruise from St. Helena to The Downs started at 1762-06-18 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747524, 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: 21.773288 * Median Longitude: -26.820137 * South-bound Latitude: -15.350000 * West-bound Longitude: -37.650000 * North-bound Latitude: 49.700000 * East-bound Longitude: -6.450000
Date/Time Start: 1762-06-18T12:00:00 * Date/Time End: 1762-08-31T13:00:00
Event(s):
Assistance_17620618_NMM_ADM/L/A209 * Latitude Start: -15.890000 * Longitude Start: -5.750000 * Latitude End: 47.720000 * Longitude End: -5.280000 * Date/Time Start: 1762-06-18T00:00:00 * Date/Time End: 1762-08-31T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Assistance (4th Rate Frigate), Voyage: St Helena - Downs Uk, 1st Observer: William Norton (Captain), 2nd Observer: Rowland Pigott (1st Officer/Master), Company: Royal Navy, Other ship information: 1052BM
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 CommentCommentAny remark, found in the logbook on this particular day, about the ship, sails, rigging, etc.
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 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:
1406 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 
Comment
(Any remark, found in the logb...)
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 
Clearness
18 
Gusts
(1 If wind gusts are reported)
19 
Rain
(1 If rain was reported)
20 
Fog
(1 If fog was reported)
21 
Snow
(1 If snow was reported)
22 
Thunder
(1 If thunder and or lightning...)
23 
Hail
(1 If hail was reported)
24 
Sea ice
(1 If sea-ice or icebergs were...)
25 
ID
(CLIWOC 2.1 line number)
1762-06-18T12:00-15.35-6.451349.3ST HELENAS49E20N49W60.00-12SWBW, SEBSFIRST PART LIGHT AIRS, LATTER A FRESH BREEZEFIRST PART HAZY WEATHER, LATTER FAIR000000019591
1762-06-19T13:00-14.03-8.1013619.0ST HELENAS50E66N56W140.00-10SEBSFRESH GALESFAIR WEATHER000000019592
1762-06-20T13:00-12.85-10.509119.0ST HELENAS51E114N60W144.00-10SE, EBSFRESH GALESFAIR WEATHER000000019593
1762-06-21T13:00-11.75-12.55486.7ST HELENAS52E159N61W136.00-8EBS, NEBEMODERATECLOUDY WEATHER000000019594
1762-06-22T13:00-10.58-14.6210519.0ST HELENAS55E206N60W140.00-8NEBE, ESEFRESH GALES WITH SQUALLSRAIN010000019595
1762-06-23T13:00-9.42-16.601276.7ST HELENAS57E251N59W135.00-8SEMODERATEFAIR WEATHER000000019596
1762-06-24T13:00-8.12-18.531296.7ST HELENAS59E300N56W138.00-6SEMODERATERAINCLOUDY010000019597
1762-06-25T13:00-6.93-20.081296.7ST HELENAS59E338N52W116.00-6SEMODERATERAINCLOUDY010000019598
1762-06-26T13:00-5.77-22.071186.7ST HELENAS59E383N59W135.00-6SEBEMODERATEFAIR000000019599
1762-06-27T14:00-4.78-23.871206.7ST HELENAS60E423N60W121.00-4SEBEMODERATEFAIR000000019600
1762-06-28T14:00-3.92-25.8713119.0ST HELENAS62E466N66W128.00-4SEBE, SEFRESH GALESFAIR WEATHER000000019601
1762-06-29T14:00-4.00-27.971346.7ST HELENAS63E507S87W124.00-1SEMODERATEFAIR WEATHER000000019602
1762-06-30T00:001356.7FERDINANDOWNW1/2N9SEMODERATEFAIR WEATHER000000019603
1762-07-02T14:000.07-31.291336.7FERDINANDOS18W80N13E136.00-2SEMODERATEHAZY WEATHER000000019604
1762-07-03T14:002.17-30.72889.3FERDINANDOS15W123N15E130.00-2SE, EA FRESH BREEZECLOUDY WEATHER000000019605
1762-07-04T14:004.10-30.391436.7FERDINANDOS13W162N11E118.00-3SEBSMODERATEFAIR WEATHER000000019606
1762-07-05T14:006.17-30.121556.7FERDINANDOS10W203N7E125.00-3SEBE, SSEMODERATEFAIR WEATHER000000019607
1762-07-06T14:007.42-30.122902.6FERDINANDOS9W228N75.00-3SSW, WNWLIGHT BREEZESRAINCLOUDY010000019608
1762-07-07T14:007.62-30.121992.6FERDINANDOS9W231N10.00-4SSWLIGHT BREEZES AND CALMRAINCLOUDY010000019609
1762-07-08T14:007.87-30.092772.6FERDINANDOS9W237N5E16.00-4NBW, WBNLIGHT BREEZES AND CALMRAINCLOUDY010000019610
1762-07-09T14:008.22-30.093562.6FERDINANDOS8W243N20.00-4WBN, NLIGHT BREEZES AND CALMMUCH RAINCLOUDY010000019611
1762-07-10T14:009.30-29.721762.6FERDINANDOS8W267N18E78.00-4NW, W, SLIGHT BREEZES THROUGHOUT000000019612
1762-07-11T14:0011.03-29.202666.7FERDINANDOS8W302N17E107.00-4WMODERATECLOUDY000000019613
1762-07-12T14:0011.83-28.972891.0FERDINANDOS8W319N17E51.00-4SSW, WNWLIGHT AIRSCLOUDY WEATHER000000019614
1762-07-13T14:0012.43-28.773561.0FERDINANDOS8W332N18E40.00-4WNW, SW, NLIGHT AIRSCLOUDY WEATHER000000019615
1762-07-14T14:0012.48-28.843111.0FERDINANDOS8W333N45W6.00-4NBE, NEBN, NWLIGHT AIRSRAINCLOUDY WEATHER010000019616
1762-07-15T14:0013.00-28.751986.7FERDINANDOS8W343N20E33.00-5N, ENE, SSWMODERATECLOUDY000000019617
1762-07-16T14:0013.17-28.553551.0FERDINANDOS9W345N38W13.00-5W, NEBE, NLIGHT AIRS AND CALMS000000019618
1762-07-17T14:0013.50-28.54966.7FERDINANDOS10W352N46E30.00-5N, ENE, EBSMODERATEFAIR000000019619
1762-07-18T14:0014.90-28.641086.7FERDINANDOS11W380N5W84.00-5SSE, ESEMODERATEFAIR WEATHER000000019620
1762-07-19T14:0015.72-29.3466.7FERDINANDOS9W395N41W65.00-5ESE, E, NBEMODERATEFAIR WEATHER000000019621
1762-07-20T14:0016.90-30.6729FERDINANDOS6W418N50W110.00-5NNE, NEBNSQUALLYRAIN010000019622
1762-07-21T14:0017.97-31.39276.7FERDINANDOS5W436N34W78.00-7NE, NEBNMODERATECLOUDY000000019623
1762-07-22T14:0018.47-32.25166.7FERDINANDOS448N60W60.00-7NEBE, NNEMODERATECLOUDY000000019624
1762-07-23T14:0019.00-33.09406.7FERDINANDOS2E459N56W58.00-5NNE, NEMODERATEHAZY000000019625
1762-07-24T14:0019.40-33.09966.7FERDINANDOS2E466N24.00-5N, SE, EBSMODERATEHAZY000000019626
1762-07-25T14:0020.15-33.95401.0FERDINANDOS4E481N35W56.00-5ENE, NELIGHT AIRSCALMS000000019627
1762-07-26T14:0021.23-34.34746.7FERDINANDOS5E502N18W69.00-5NE, EBNMODERATEHAZY WEATHER000000019628
1762-07-27T14:0022.53-34.89396.7FERDINANDOS5E530N22W85.00-6ENE, NEMODERATEHAZY WEATHER000000019629
1762-07-28T14:0023.68-35.47506.7FERDINANDOS6E554N26W76.00-6NEBN, NEBEMODERATEHAZY WEATHER000000019630
1762-07-29T14:0024.83-35.72501.0FERDINANDOS6E577N10W70.00-6NEBN, NEBELIGHT AIRSCLOUDY000000019631
1762-07-30T14:0026.57-35.92626.7FERDINANDOS7E611N6W104.00-6EBN, ENEMODERATEFAIR000000019632
1762-07-31T14:0028.43-35.927119.0FERDINANDOS6E648N112.00-8ENE, EBNFRESH GALESHAZY WEATHER000000019633
1762-08-01T14:0029.83-36.42376.7FERDINANDOS5E678N18W90.00-8EBN, NEMODERATECLOUDY000000019634
1762-08-02T14:0030.42-36.97486.7FERDINANDOS6E696N42W49.00-8NNE, NEBEMODERATECLOUDY000000019635
1762-08-03T14:0031.13-37.49601.0FERDINANDOS6E712N36W50.00-8NBE, ENELIGHT AIRSFAIR000000019636
1762-08-04T15:0031.58-37.651071.0FERDINANDOS6E722N20W29.00-6N, EBN, ESELIGHT AIRSFAIR000000019637
1762-08-05T14:0032.92-37.42103FERDINANDOS6E748N8E87.00-10SE, EBN, ESESQUALLYRAIN010000019638
1762-08-06T14:0034.12-37.42586.7FERDINANDOS6E772N72.00-10ESE, ENEMODERATEFAIR000000019639
1762-08-07T14:0034.62-37.42581.0FERDINANDOS6E782N30.00-10E, ENELIGHT AIRS AND CALM000000019640
1762-08-08T14:0034.70-37.402491.0FERDINANDOS6E783N10E6.00-10NWBN, SW, WBSLIGHT AIRS AND CALMRAIN010000019641
1762-08-09T14:0035.20-37.192831.0FERDINANDOS6E792N22E32.00-10WBN, WNWLIGHT AIRS AND CALMRAIN010000019642
1762-08-10T14:0035.83-36.901481.0FERDINANDOS6E805N24E42.00-10WBN, SSELIGHT AIRS AND CALMRAIN010000019643
1762-08-11T14:0037.17-36.341036.7FERDINANDOS5E833N26E90.00-10SEBS, ESEMODERATEFAIR000000019644
1762-08-12T14:0038.32-35.591226.7FERDINANDOS5E856N35E85.00-13SEBE, SEMODERATEFAIR000000019645
1762-08-13T14:0038.62-34.991331.0FERDINANDOS4E864N54E40.00-13SEBE, SEBSLIGHT AIRSCLOUDY000000019646
1762-08-14T14:0039.13-34.421671.0FERDINANDOS3E870N41E40.00-13SE, SLIGHT AIRSRAINCLOUDY010000019647
1762-08-15T14:0040.00-32.791786.7FERDINANDOS1E878N54E90.00-13SE, SBWMODERATEFAIR000000019648
1762-08-16T14:0040.50-31.061779.3CORVOSSW1/2W10-14SSE, SBWFRESH BREEZESFAIR000000019649
1762-08-17T14:0041.00-29.332349.3CORVOS52W35N52E104.00-14SBW, WSWFRESH BREEZESFAIR000000019650
1762-08-18T14:0041.72-27.522796.7CORVOS56W65N62E92.00-14WSW, WNWMODERATEHAZY000000019651
1762-08-19T14:0042.47-25.522559.3CORVOS56W98N63E100.00-15WFRESH BREEZESHAZY000000019652
1762-08-20T13:0043.83-22.0724122.6CORVOS57W155N62E170.00-18NWBN, WBSSTIFF GALESHAZY000000019653
1762-08-21T13:0045.25-19.4324122.6CORVOS57W200N53E140.00-18WSW, NW, WBSSTIFF GALESHAZY000000019654
1762-08-22T13:0047.00-16.2319622.6CORVOS58W256N53E172.00-18WSW, SWBSSTIF GALESHAZY WEATHER000000019655
1762-08-23T13:0047.45-15.5750CORVOS57W269N45E38.00AT 2AM WAS TAKEN ABACK-18SWBW, NW, N, ENEFIRST PART MODERATE, LATTER SQUALLYHEAVY RAINFIRST PART HAZY010000019656
1762-08-24T13:0048.20-14.433406.7CORVOS56W288N45E64.00-20SBE, E, NFIRST PART SQUALLY, LATTER MORE MODERATERAIN010000019657
1762-08-25T13:0049.07-11.4328419.0CORVOS55W335N60E140.00-20NNW, NWBWFRESH GALESHAZY THROUGHOUT000000019658
1762-08-26T13:0049.08-9.30481.0CORVOS56W354E85.00-20NWBN, NBW, ENEFIRST PART FRESH BREEZES, LATTER LIGHT AIRSFIRST PART SMALL RAINLATTER CLOUDY010000019659
1762-08-27T13:0049.70-8.901046.7CORVOS56W363N21E45.00-20EBS, SEBEMODERATECLOUDY000000019660
1762-08-28T13:0049.27-8.801049.3CORVOS55W361N23E17.00-20ESE, SEBEFRESH BREEZESHAZY000000019661
1762-08-29T13:0049.67-8.80819.3CORVOS55W365N24.00-20SEBE, EBSFRESH BREEZESHAZY WEATHER000000019662
1762-08-30T13:0049.47-8.63709.3CORVOS55W364S30E15.00-20SEBE, EFRESH BREEZESHAZY WEATHER000000019663
1762-08-31T13:0049.52-8.273619.0CORVOS55W370N80E20.00-20E, NEBEFRESH GALESFAIR WEATHER000000019664