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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 SOMERSET cruise from Plymouth to Boston started at 1774-10-26 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752155, 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: 39.083333 * Median Longitude: -39.012745 * South-bound Latitude: 33.100000 * West-bound Longitude: -67.300000 * North-bound Latitude: 48.980000 * East-bound Longitude: -6.220000
Date/Time Start: 1774-10-26T12:00:00 * Date/Time End: 1774-12-16T17:00:00
Event(s):
Somerset_17741026_NMM_ADM/L/S411 * Latitude Start: 50.299000 * Longitude Start: -4.150000 * Latitude End: 41.980000 * Longitude End: -67.060000 * Date/Time Start: 1774-10-26T00:00:00 * Date/Time End: 1774-12-16T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Somerset (3rd Rate Frigate), Voyage: Plymouth - Boston, 1st Observer: Edward Lecras (Captain), Company: Royal Navy, Other ship information: 70G 1414BM
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 State of the sea descriptionState sea 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:
967 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 
State sea 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)
1774-10-26T12:0048.98-6.221476.7LIZARDN34:35E23S34:35W70.00-22NWBN, NNW, SSE, SBEMODERATECLEAR0000000237749
1774-10-27T13:0047.68-8.981479.3LIZARDN47:46E67S54:54W135.00-22SBEFRESH BREEZESCLOUDY0000000237750
1774-10-28T13:0046.57-11.72148LIZARDN52:00E111S61:13W139.00-21SBERAINHAZY0100000237751
1774-10-29T13:0045.60-13.601829.3LIZARDN52:24E143S53:43W98.00-21SSE, VARIABLE, SSWFRESH BREEZESCLOUDY0000000237752
1774-10-30T13:0044.77-14.082279.3LIZARDN40:40E149S22:50W54.00-21NW, NBW, VARIABLE, WSWFRESH BREEZESCLOUDY0000000237753
1774-10-31T13:0044.18-15.1521.0LIZARDN49:36E178S52:44W58.00-21N, NNW, SWBS, NNELIGHT AIRSCLOUDY0000000237754
1774-11-01T13:0043.78-16.672151.0LIZARDN51:46E199S69:25W68.00-21NBW, WBS, SWBWLIGHT AIRSCLOUDY0000000237755
1774-11-02T13:0044.13-18.0321619.0LIZARDN54:58E202N70:24W62.00-20SW, SWBS, WSW, SWBWFRESH GALESCLOUDY0000000237756
1774-11-03T13:0043.83-19.202739.3LIZARDN56:04E219S63:27W40.00-20SWBW, WBN, WNWFRESH BREEZESHAZY0000000237757
1774-11-04T13:0043.62-19.972056.7LIZARDN58:30E244S66:49W38.00-20WBS, WSW, SWBW, SWMODERATE BREEZES0000000237758
1774-11-05T13:0042.03-20.6526319.0LIZARDN52:28E260S17:31W98.00-18WSW, NW, WBNFRESH GALES AND SQUALLY0000000237759
1774-11-06T13:0040.75-20.7524119.0LIZARDN48:52E280S2:58W77.00-18NW, WBN, WBSFRESH GALES AND SQUALLYGREAT SWELL FROM NW0000000237760
1774-11-07T13:0039.72-20.102522.6LIZARDN45:04E290S21:58E67.00-18EBS, WFIRST FRESH GALES AND SQUALLY, LATTER LITTLE WIND0000000237761
1774-11-08T13:0038.68-19.982526.7LIZARDN42:16E304S4:36E62.00-18NWBW, WMODERATECLOUDY0000000237762
1774-11-09T13:0038.07-19.232306.7LIZARDN40:09E310S42:24E51.00-18WBS, WSWMODERATECLOUDY0000000237763
1774-11-10T13:0038.38-20.4819622.6LIZARDN42:33E314S72:25W62.00-18SSW, SWBSSTRONG GALESHAZY0000000237764
1774-11-11T13:0038.10-19.981856.7LIZARDN40:59E314S56:13E30.00-18SWBW, SSWMODERATECLOUDY0000000237765
1774-11-12T13:0038.27-20.622306.7LIZARDN42:32E317N74:4W-18SSW, SWBS, WSWMODERATELIGHTNING0000100237766
1774-11-13T14:0038.12-22.551186.7LIZARDN42:56E323S84:28W44.00-17SSW, S, SEMODERATELIGHTNING0000100237767
1774-11-14T14:0038.12-25.272089.3LIZARDN50:31E372W128.00-17SE, SSE, SBW, SWFRESH BREEZES0000000237768
1774-11-15T14:0037.68-27.871539.3LIZARDN53:00E408S78:05W126.00-16SW, SWBS, SBEFRESH BREEZESFAIR0000000237769
1774-11-16T14:0036.88-30.401779.3LIZARDN54:19E448S68:07W128.00-14SBE, SBWFRESH BREEZESFAIR0000000237770
1774-11-17T14:0036.40-32.401779.3LIZARDN53:11E452S73:6W354.00-14SSE, SSW, SBWFRESH BREEZESFAIR0000000237771
1774-11-18T14:0035.93-35.256.7LIZARDN57:21E509S77:00W127.00-12MODERATE BREEZES0000000237772
1774-11-19T15:0035.65-38.4210219.0LIZARDN59:26E562WBS1/2W154.00-11SSE, ESEFRESH GALES AND SQUALLY0000000237773
1774-11-20T15:0035.65-40.571586.7LIZARDN61:00E589W105.00-11NE, NEBE, SBEMODERATE BREEZES0000000237774
1774-11-21T15:0036.28-41.7330419.0LIZARDN57:01E602N55:30W68.00-11SSW, WSW, NWFRESH GALES0000000237775
1774-11-22T15:0035.62-43.1328419.0LIZARDN62:35E623S59:10W78.00-9NNE, WNWFRESH GALES0000000237776
1774-11-23T15:0035.32-44.973406.7LIZARDN63:15E647S78:42W92.00-9NNW, NBWMODERATEFAIR0000000237777
1774-11-24T15:0035.35-45.25816.7LIZARDN63:28E657N81:30W17.00-9NNE, EMODERATEFAIR0000000237778
1774-11-25T15:0035.35-45.622500.0LIZARDN63:43E662W21.00-9NE, SW, WBSCALMFAIR0000000237779
1774-11-26T15:0035.18-47.7539.3LIZARDN64:31E689S84:1W106.00-8EBS, N, NBEFRESH BREEZES AND SQUALLY0000000237780
1774-11-27T15:0035.13-49.973416.7LIZARDN64:41E720S83:3W117.00-8N, NBWMODERATE BREEZES0000000237781
1774-11-28T15:0034.57-51.152406.7LIZARDN65:30E741S67:32W62.00-8NNW, WNW, WSWMODERATE BREEZES0000000237782
1774-11-29T16:0034.63-53.57169.3LIZARDN66:40E773N88:05W120.00-7ENE, NE, NNEFRESH BREEZES0000000237783
1774-11-30T16:0033.10-55.651619.0LIZARDN65:46E821S48:30W139.00-7N, NNEFRESH GALES AND HARD SQUALLS0000000237784
1774-12-01T16:0034.38-57.58519.3LIZARDN66E831N51:16W124.00-5NE, NEBEFRESH BREEZES0000000237785
1774-12-02T16:0034.65-58.333102.6LIZARDN63:34E870N67:10W41.00-5NE, NWLIGHT WINDSFAIR0000000237786
1774-12-03T16:0034.80-59.551819.0LIZARDN69:37E876N81:29W62.00-5NBE, NNEFRESH GALESCLEAR0000000237787
1774-12-04T16:0035.98-61.532919.0LIZARDN71:10E865N53:48W120.00-5NNE, NEBNFRESH GALESCLEAR0000000237788
1774-12-05T16:0036.53-63.08416.7LIZARDN72:14E875N66:15W82.00-4NNE, NEMODERATEFAIR0000000237789
1774-12-06T16:0036.47-64.103226.7LIZARDN72:29E895WBS1/2W50.00-4N, NBW, NWBNMODERATEFAIR0000000237790
1774-12-07T16:0037.52-64.322406.7LIZARDN73:41E887N5:15W64.00-8W, WBN, WBS, WSWMODERATEFAIR0000000237791
1774-12-08T16:0039.00-66.202859.3LIZARDN79:45E890NW126.00-8WBS, WSW, SW, WNWFRESH BREEZESCLOUDY0000000237792
1774-12-09T16:0039.25-65.88719.3LIZARDN76:20E885N27:21E33.00-8NNW, NE, EBNFRESH BREEZESCLOUDY0000000237793
1774-12-10T16:0040.30-65.231726.7LIZARDN77:08E877N25:62E73.00-8SEBE, SSE, SMODERATE BREEZESTHICK0000000237794
1774-12-11T16:0041.58-64.753076.7LIZARDN78:36E844N15:57E80.00-8S, SSE, NWMODERATECLOUDY0000000237795
1774-12-12T16:0042.72-63.8528019.0LIZARDN79:58E830N31:06E79.00-13NW, NWBW, WNWFRESH GALES AND SQUALLY0000000237796
1774-12-13T16:0042.88-64.6535819.0LIZARDN80:12E830N72:39W26.00-13NW, NWBW, NNE, NEBEFRESH GALES AND SQUALLY0000000237797
1774-12-14T16:0042.67-66.372689.3LIZARDN80:12E851S80:10W76.00-13SE, SSE, ESE, WBNFRESH BREEZESSNOW0001000237798
1774-12-15T16:0042.42-67.301956.7LIZARDN80:07E877S76:49W65.00-8SE, SBW, SSWMODERATE BREEZESCLOUDY0000000237799
1774-12-16T17:00-70.463159.3CAPE CODN63:28W6N63:28E18.00SSW, NWBW, NWFRESH BREEZESRAINHAZY0100000237800