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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 THAMES cruise from Cape Spartel to Plymouth started at 1771-03-21 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752469, 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: 43.609565 * Median Longitude: -10.642609 * South-bound Latitude: 34.000000 * West-bound Longitude: -15.180000 * North-bound Latitude: 49.650000 * East-bound Longitude: -5.430000
Date/Time Start: 1771-03-21T12:00:00 * Date/Time End: 1771-04-12T12:00:00
Event(s):
Thames_17710321_NMM_ADM/L/T82 * Latitude Start: 36.000000 * Longitude Start: -6.880000 * Latitude End: 50.299000 * Longitude End: -4.150000 * Date/Time Start: 1771-03-21T00:00:00 * Date/Time End: 1771-04-12T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Thames (5th Rate Frigate), Voyage: Cape Spartel - Plymouth, 1st Observer: Captain, 2nd Observer: William Osborne (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 32G 646BM
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:
433 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)
1771-03-21T12:0036.00-6.883611.0CAPE SPARTELS71E18N71W55.00-18EBS, CALMFIRST PART LIGHT BREEZES, MIDDLE AND LATTER LIGHT AIRS0000000253185
1771-03-22T13:0035.45-8.382979.3CAPE SPARTELN79E42S62W84.00-18CALM, NWFRESH BREEZES AND SQUALLY0000000253186
1771-03-23T13:0034.33-10.002979.3CAPE SPARTELN67E77S53W111.00-18NWFRESH BREEZESCLOUDY0000000253187
1771-03-24T13:0034.00-11.253429.3CAPE SPARTELN71E107S80W89.00-18NFRESH BREEZESCLOUDY0000000253188
1771-03-25T13:0035.10-13.00289.3CAPE ST VINCENTN54E61N41W86.00-17NEFRESH BREEZESCLOUDY0000000253189
1771-03-26T13:0036.28-13.001181.0CAPE SPARTELS86E124N2E71.00-17ENE, SELIGHT AIRSCLOUDY0000000253190
1771-03-27T13:0039.12-11.9211619.0BURLINGSN76E39N15E176.00-19SEFRESH GALESHAZY0000000253191
1771-03-28T13:0041.78-12.482619.0CAPE FINISTERN54E48N6W161.00-19SE, NEFRESH GALESHAZY0000000253192
1771-03-29T13:0042.57-13.22256.7CAPE FINISTERN77E47N40W61.00-20NEMODERATECLOUDY0000000253193
1771-03-30T13:0043.23-14.32251.0CAPE FINISTERN88E64N51W63.00-20NELIGHT AIRSCLOUDY0000000253194
1771-03-31T13:0044.00-15.182519.0CAPE FINISTERS77E76N35W64.00-20NEFRESH GALES AND SQUALLYRAIN0100000253195
1771-04-01T13:0045.00-14.879319.0CAPE FINISTERS63E84N12E64.00-20ESEFRESH GALESCLOUDY0000000253196
1771-04-02T13:0046.33-13.9311519.0CAPE FINISTERS44E87N38E84.00-20SEFRESH GALESCLOUDY0000000253197
1771-04-03T13:0047.48-13.0311519.0CAPE CLEARN18E80N28E74.00-20SEFRESH GALES AND SQUALLY0000000253198
1771-04-04T13:0049.50-12.459119.0LIZARDN84E92N11E123.00-22ESEFRESH GALESCLOUDY0000000253199
1771-04-05T13:0049.00-11.20681.0SCILLYN76E69S65E54.00-22NE, ELIGHT AIRSHAZY0000000253200
1771-04-06T13:0049.05-8.932319.0SCILLYN63E40S87E90.00-22NEFRESH GALES AND SQUALLY0000000253201
1771-04-07T13:0048.18-8.004622.6SCILLYN35E43S33E63.00-22ENESTRONG GALES AND SQUALLYRAIN0100000253202
1771-04-08T13:0049.27-8.137919.0SCILLYN60E31N1/4W65.00-22E, EBSFRESH GALESCLOUDY0000000253203
1771-04-09T12:0049.00-7.0011419.0SCILLYN36E21N73E39.00-21SEFRESH GALESCLOUDY0000000253204
1771-04-10T12:0049.65-6.351256.7SCILLYN22E7N41E43.00-21SEBSMODERATEHAZY0000000253205
1771-04-11T12:0049.30-5.8310319.0SCILLYN18W14S44E39.00-21SEBEFRESH GALESCLOUDY0000000253206
1771-04-12T12:0049.40-5.439219.0LIZARDN11E11N76E18.00-21ESEFRESH GALESCLOUDY0000000253207