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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 Spithead to Deseada started at 1794-08-18 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752100, 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: 33.232245 * Median Longitude: -25.007959 * South-bound Latitude: 16.380000 * West-bound Longitude: -61.000000 * North-bound Latitude: 49.470000 * East-bound Longitude: -7.280000
Date/Time Start: 1794-08-18T12:00:00 * Date/Time End: 1794-10-06T00:00:00
Event(s):
Severn_17940818_NMM_ADM/L/S242 * Latitude Start: 50.680000 * Longitude Start: -0.960000 * Latitude End: 25.050000 * Longitude End: -72.980000 * Date/Time Start: 1794-08-18T00:00:00 * Date/Time End: 1794-10-06T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Severn (5th Rate Frigate), Voyage: Spithead - Deseada, 1st Observer: George Tripp (Captain), 2nd Observer: John Butt (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
--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 IdentificationIDCLIWOC 2.1 line number
Size:
931 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 
ID
(CLIWOC 2.1 line number)
1794-08-18T12:0049.37-7.282696.7ST AGNESN30:48E13S7.00-24WNWMODERATECLEAR0000000235020
1794-08-19T13:0049.47-7.552231.0ST AGNESN45:40E13N61W11.00-25WSWLIGHT AIRSCLEAR0000000235021
1794-08-20T13:0048.87-8.272230.0CAPE FINISTERRES4:44W115S44W50.00-25WSWCALMSWELL FROM W0000000235022
1794-08-21T13:0048.18-9.272231.0CAPE FINISTERRES3:12W100S44W57.00-25WSWLIGHT AIRS0000000235023
1794-08-22T13:0047.28-10.382702.6CAPE FINISTERRES7:02E82S40W70.00-23WNWLIGHT BREEZESCLEAR0000000235024
1794-08-23T13:0046.48-11.153622.6CAPE FINISTERRES17:48E69S33W58.00-23VARIABLELIGHT BREEZESCLOUDY0000000235025
1794-08-24T13:0045.90-11.203606.7CAPE FINISTERRES20:58E61S5W27.00-23NNEMODERATE BREEZESTHICK0010000235026
1794-08-25T13:0044.10-9.822582.6CAPE ORTUGALSSE9-23WBNLIGHT BREEZESRAIN0100000235027
1794-08-26T13:0044.00-8.433621.0CAPE ORTUGALS55W12S55W43.00-23VARIABLELIGHT AIRS0010000235028
1794-08-27T13:0043.48-8.533626.7CORONASE1/2E6-23VARIABLEMODERATECLEAR0000000235029
1794-08-28T13:0043.67-8.622586.7CORONAS24E8N24W24.00-23WBNMODERATECLEAR0000000235030
1794-08-29T13:0044.00-9.402472.6CAPE FINISTERRES5E23N62W40.00-23WLIGHT WINDSCLEAR0000000235031
1794-08-30T13:0043.52-9.67213CAPE FINISTERRES32E14S26W33.00-23SWBWTHICKHAZY0010000235032
1794-08-31T13:0043.42-10.162476.7CAPE FINISTERRES1/2E10-23WMODERATECLOUDY0000000235033
1794-09-01T13:0042.98-10.653622.6CAPE FINISTERRES6E3-23VARIABLELIGHT BREEZESCLOUDY0000000235034
1794-09-02T13:0042.67-11.143620.0PORTO NOVOSE1/2S9-23VARIABLECALMHAZY0000000235035
1794-09-03T13:0041.12-11.633626.7CAPE FINISTERREN46E49S46W145.00-22VARIABLEMODERATEFAIR0000000235036
1794-09-04T13:0040.18-12.953626.7ST MARYSS71:17W201S47W82.00-22VARIABLEMODERATEFAIR0000000235037
1794-09-05T13:0038.83-14.583162.6MADEIRAS24:18W137S43W111.00-22NNWLIGHT WINDS0000000235038
1794-09-06T13:0037.82-15.973382.6MADEIRAS18:24W111S46W89.00-22NLIGHT BREEZESCLOUDY0000000235039
1794-09-07T13:0036.68-17.503066.7MADEIRAS6:28W83S47W109.00-20NWBNMODERATEFAIR0000000235040
1794-09-08T13:0035.55-19.003186.7MADEIRAS14:32E62S47W101.00-20NNWMODERATECLEAR0000000235041
1794-09-09T13:0035.00-19.22252.6MADEIRAS53:25E68S47W42.00-20NELIGHT BREEZESCLEAR0000000235042
1794-09-10T13:0035.05-18.133621.0PORT SANCTOS52:31E36N85W34.00-20VARIABLELIGHT AIRSCLEAR0000000235043
1794-09-11T13:0035.40-18.953626.7ST MARYSN72:49W105N62W49.00-20VARIABLEMODERATECLOUDY0000000235044
1794-09-12T13:0034.10-20.9736.7PORT SANCTOE76S52W127.00-20NNEMODERATECLOUDY0000000235045
1794-09-13T13:0033.00-22.232519.0MADEIRAS82:56E70S44W92.00-20NEFRESH GALESHEAVY SEA0000000235046
1794-09-14T14:0032.13-23.48516.7ANTIGUAS66:32W756SW1/2W82.00-17ENEMODERATE BREEZESFAIR0000000235047
1794-09-15T14:0031.00-24.87512.6DESEADAS59:17W574S46W98.00-17ENELIGHT BREEZESCLEAR0000000235048
1794-09-16T14:0030.33-25.733622.6DESEADAS59:44W555S48W60.00-17VARIABLELIGHT BREEZESCLOUDY0000000235049
1794-09-17T14:0030.00-26.173621.0DESEADAS59:57W545S48W27.00-17VARIABLELIGHT AIRSCLEAR0000000235050
1794-09-18T14:0029.10-27.272981.0DESEADAS60:38W520S47W79.00-17NWLIGHT AIRSCLEAR0000000235051
1794-09-19T14:0028.03-28.623236.7DESEADAS61:30W490S48W95.00-15NNWMODERATE BREEZESRAIN AT TIMES0100000235052
1794-09-20T14:0027.08-29.92326.7DESEADAS70:07WSW1/2W90.00-13NEMODERATECLOUDY0000000235053
1794-09-21T14:0026.18-31.22776.7DESEADASWS54W89.00-13EMODERATE BREEZESFAIR0000000235054
1794-09-22T14:0025.30-32.551242.6DESEADAS71:53W576SW3/4W94.00-11SELIGHT BREEZESFAIR0000000235055
1794-09-23T14:0024.27-34.24796.7DESEADAS72:57W540S57W116.00-11EMODERATEFAIR0000000235056
1794-09-24T14:0022.52-37.361249.3DESEADAS75W477SWBW1/4W207.00-11SEFRESH BREEZESCLOUDY0000000235057
1794-09-25T15:0021.12-39.806219.0DESEADAS77:02W477S57W164.00-7ENEMODERATE, FRESHGALESFAIR, CLOUDY0000000235058
1794-09-26T15:0019.48-40.83626.7DESEADAS80:35W383S50W153.00-7ENEMODERATEHAZY0000000235059
1794-09-27T15:0018.25-44.331099.3DESEADAS83:27W333S63W163.00-4ESEFRESH BREEZESCLOUDY0000000235060
1794-09-28T15:0017.67-46.43646.7DESEADAS84:49W291S74W129.00-4ENEMODERATE BREEZESHAZY0000000235061
1794-09-29T15:0016.90-49.15676.7DESEADAS84:22W239S74W173.00-1ENEMODERATE BREEZESFAIR0000000235062
1794-09-30T15:0016.52-51.95679.3DESEADAS88:59W181S82W173.00-1ENEFRESH BREEZESFAIR0000000235063
1794-10-01T16:0016.50-54.18916.7DESEADAS88:48W137W131.001EMODERATECLOUDY0000000235064
1794-10-02T16:0016.67-56.04916.7DESEADAS86:33W103N85W116.001EMODERATE BREEZESFINE0000000235065
1794-10-03T16:0016.45-58.163626.7DESEADAS88:08W59S84W131.003VARIABLEMODERATE BREEZESFAIR0000000235066
1794-10-04T16:0016.38-59.443622.6DESEADASW33S87W80.003VARIABLELIGHT BREEZESCLOUDY0000000235067
1794-10-05T16:0016.38-61.00716.7DESEADASW31S89W177.003ENEMODERATECLOUDY0000000235068
1794-10-06T00:0016.98906.7DESEADA1EMODERATEFAIR0000000235069