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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 SEVERN cruise from Gibraltar to Port Au Prince started at 1795-06-26 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752102, 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: 24.892069 * Median Longitude: -34.233793 * South-bound Latitude: 16.450000 * West-bound Longitude: -60.700000 * North-bound Latitude: 34.850000 * East-bound Longitude: -7.420000
Date/Time Start: 1795-06-26T12:00:00 * Date/Time End: 1795-07-24T16:00:00
Event(s):
Severn_17950626_NMM_ADM/L/S242 * Latitude Start: 35.970000 * Longitude Start: -5.550000 * Latitude End: 21.880000 * Longitude End: -74.350000 * Date/Time Start: 1795-06-26T00:00:00 * Date/Time End: 1795-07-24T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Severn (5th Rate Frigate), Voyage: Gibraltar - Port Au Prince, 1st Observer: George Tripp (Captain), 2nd Observer: John Burn (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 44G 896BM
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 Precipitation descriptionPrecip descr
15 ClearnessClearness
16 GustsGusts1 If wind gusts are reported
17 Precipitation/RainRain1 If rain was reported
18 FogFog1 If fog was reported
19 Snow typeSnow1 If snow was reported
20 ThunderThunder1 If thunder and or lightning was reported
21 HailHail1 If hail was reported
22 Sea iceSea ice1 If sea-ice or icebergs were reported
23 IdentificationIDCLIWOC 2.1 line number
Size:
547 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 
Precip descr
15 
Clearness
16 
Gusts
(1 If wind gusts are reported)
17 
Rain
(1 If rain was reported)
18 
Fog
(1 If fog was reported)
19 
Snow
(1 If snow was reported)
20 
Thunder
(1 If thunder and or lightning...)
21 
Hail
(1 If hail was reported)
22 
Sea ice
(1 If sea-ice or icebergs were...)
23 
ID
(CLIWOC 2.1 line number)
1795-06-26T12:0034.85-7.42709.3CAPE SPARTELN54E31S54W94.00-20EFRESH BREEZESCLOUDY0000000235093
1795-06-27T13:0033.47-9.083622.6CAPE SPARTELN49:13E71SW118.00-20VARIABLELIGHT BREEZESCLEAR0000000235094
1795-06-28T13:0032.08-11.433626.7MADEIRAN84:58W110S55W146.00-19VARIABLEMODERATE BREEZESCLEAR0000000235095
1795-06-29T13:0031.07-14.0846.7SALVAGESS58:26W36S66W150.00-19NNEMODERATE BREEZESCLEAR0000000235096
1795-06-30T13:0030.85-16.103526.7SALVAGESS13E15S83W109.00-19NBEMODERATECLEAR0000000235097
1795-07-01T13:0031.05-17.572756.7SALVAGESS56:35E34S81W77.00-18WNWMODERATECLEAR0000000235098
1795-07-02T13:0030.98-19.32276.7SALVAGESS73:26E61S87W102.00-18NEMODERATE BREEZESCLEAR0000000235099
1795-07-03T13:0030.98-21.25722.6SALVAGESS79:15E93W99.00-18ELIGHT BREEZESCLEAR0000000235100
1795-07-04T14:0030.33-23.60286.7DESEADAS68:16W755S72W128.00-17NEMODERATE BREEZESCLEAR0000000235101
1795-07-05T14:0029.33-25.68736.7DESEADAS68:42W715S61W123.00-17EMODERATE BREEZESCLEAR0000000235102
1795-07-06T14:0028.38-27.63646.7DESEADAS69:10W677S61W119.00-15EBNMODERATE BREEZESCLEAR0000000235103
1795-07-07T14:0027.67-29.20536.7DESEADAS69:29W646S63W94.00-15ENEMODERATE BREEZESCLEAR0000000235104
1795-07-08T14:0026.83-30.723626.7DESEADAS70:06W616S58W94.00-13VARIABLEMODERATE BREEZESCLOUDY0000000235105
1795-07-09T14:0026.07-32.381006.7DESEADAS70:31W583S63W102.00-13ESEMODERATE BREEZESCLEAR0000000235106
1795-07-10T14:0025.45-34.051242.6DESEADAS70:50W554S65W87.00-11SELIGHT BREEZESCLEAR0000000235107
1795-07-11T14:0024.67-35.55792.6DESEADAS71:37W527SWBW88.00-11ELIGHT BREEZESCLEAR0000000235108
1795-07-12T14:0023.82-37.14686.7DESEADAS72:35W497SWBW90.00-11EBNMODERATE BREEZESCLEAR0000000235109
1795-07-13T15:0022.82-38.941496.7DESEADAS73:52W466S58W112.00-9SSEMODERATE BREEZESCLEAR0000000235110
1795-07-14T15:0021.85-40.95616.7DESEADAS75:08W429S60W120.00-7ENEMODERATE BREEZESCLEAR0000000235111
1795-07-15T15:0020.75-43.12646.7DESEADAS76:56W389S59W126.00-4ENEMODERATE BREEZESCLEAR0000000235112
1795-07-16T15:0019.88-45.17752.6DESEADAS78:51W352S60W120.00-4EBNLIGHT WINDSCLOUDY0000000235113
1795-07-17T15:0019.00-47.03866.7DESEADAS80:26W319S62W226.00-4EMODERATECLEAR0000000235114
1795-07-18T15:0018.08-49.0677DESEADAS82:59W284S62W124.00-2EBNSQUALLY AND VARIABLE0000000235115
1795-07-19T15:0017.60-51.26889.3DESEADAS84:09W244S76W121.00-2EFRESH BREEZES AND SQUALLYSHOWERS OF RAIN1100000235116
1795-07-20T16:0017.18-53.21699.3DESEADAS85:26W209S76W105.001ENEFRESH BREEZES AND SQUALLYSHOWERS OF RAIN1100000235117
1795-07-21T16:0016.82-55.09806.7DESEADAS86:59W176S77W103.001EBNMODERATE BREEZESCLEAR0000000235118
1795-07-22T16:0016.58-57.05916.7DESEADAS88:12W143S82W100.001EMODERATE BREEZESCLEAR0000000235119
1795-07-23T16:0016.45-59.00826.7DESEADAS88:59W110S86W100.003EBNMODERATE BREEZESCLEAR0000000235120
1795-07-24T16:0016.98-60.70826.7ANTIGUAW33EBNMODERATE BREEZESCLEAR0000000235121