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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 SEAFORD cruise from Table Bay to Madras started at 1762-03-11 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752045, 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: -2.699286 * Median Longitude: 57.297143 * South-bound Latitude: -20.550000 * West-bound Longitude: 42.580000 * North-bound Latitude: 11.400000 * East-bound Longitude: 82.000000
Date/Time Start: 1762-04-18T09:00:00 * Date/Time End: 1762-06-10T07:00:00
Event(s):
Seaford_17620311_NMM_ADM/L/S203 * Latitude Start: -34.430000 * Longitude Start: 16.950000 * Latitude End: 12.100000 * Longitude End: 80.500000 * Date/Time Start: 1762-04-18T00:00:00 * Date/Time End: 1762-06-10T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Seaford (6th Rate Frigate), Voyage: Table Bay - Madras, 1st Observer: John Peighin (Captain), 2nd Observer: Thomas Appleby (1st Officer/Master), Company: Royal Navy, Other ship information: 20G 430BM
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 CommentCommentOther remarks, that were not possible to put in the other remark fields
13 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.
14 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.
15 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
16 Current speed descriptionV descr
17 Wind force descriptionWind force descrAll reported wind forces on this day
18 Present weatherwwWeather description
19 Precipitation descriptionPrecip descr
20 State of the sea descriptionState sea descr
21 ClearnessClearness
22 GustsGusts1 If wind gusts are reported
23 Precipitation/RainRain1 If rain was reported
24 FogFog1 If fog was reported
25 Snow typeSnow1 If snow was reported
26 ThunderThunder1 If thunder and or lightning was reported
27 HailHail1 If hail was reported
28 Sea iceSea ice1 If sea-ice or icebergs were reported
29 IdentificationIDCLIWOC 2.1 line number
Size:
878 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 
Comment
(Other remarks, that were not ...)
13 
Decl [deg]
(It is generally accepted by t...)
14 
Wind dir descr
(All reported wind directions ...)
15 
Cur dir descr
(Direction of the current. Thi...)
16 
V descr
17 
Wind force descr
(All reported wind forces on t...)
18 
ww
(Weather description)
19 
Precip descr
20 
State sea descr
21 
Clearness
22 
Gusts
(1 If wind gusts are reported)
23 
Rain
(1 If rain was reported)
24 
Fog
(1 If fog was reported)
25 
Snow
(1 If snow was reported)
26 
Thunder
(1 If thunder and or lightning...)
27 
Hail
(1 If hail was reported)
28 
Sea ice
(1 If sea-ice or icebergs were...)
29 
ID
(CLIWOC 2.1 line number)
1762-04-18T09:00-20.4043.0527219.0ST AUGUSTINES BAYS20E28N14W11.00-21ENE, CALM, WNWFRESH GALESCLOUDY0000000233228
1762-04-19T09:00-20.5542.5811419.0ST AUGUSTINES BAYS15E74N13W113.00-21SSW, SEFRESH GALESCLOUDY0000000233229
1762-04-20T09:00-19.9542.722720.6ST AUGUSTINES BAYS12E74N17E36.00-21ENE, CALM, WNWSET 1 MPHLIGHT AIRS INCLINING TO CALMS0000000233230
1762-04-21T09:00-19.3843.031590.6ST AUGUSTINES BAYS9E74N26E34.00-21N, CALM, SSET 1 FATHOMS PER HRLIGHT AIRS INCLINING TO CALMS0000000233231
1762-04-22T09:00-18.8843.031596.7ST AUGUSTINES BAYS4:02E94N21E42.00-21ESE, CALM, SFIRST AND MIDDLE PARTS CALM, LATTER MODERATELATTER CLOUDY0000000233232
1762-04-23T09:00-17.5543.421146.7ST AUGUSTINES BAYS3:10W121N27E90.00-21S, SW, SEMODERATECLOUDY0000000233233
1762-04-24T09:00-16.6843.253621.0ST AUGUSTINES BAYS25W138N19E54.00-19E, EBN, VARIABLELIGHT AIRSVERY UNCERTAIN WEATHER0000000233234
1762-04-25T09:00-16.1843.633611.0ST AUGUSTINES BAYS00:54E148N29W32.00-19SE, E, CALMFIRST AND LATTERP ARTS LIGHT AIRS, MIDDLE CALMMIDDLE THUNDER AND LIGHTNINGMIDDLE RAINCLOUDY0100100233235
1762-04-26T09:00-15.7743.45361ST AUGUSTINES BAYS4E91N24E26.00-19SE, CALMSET SBW5 FATHOMSFIRS PART LIGHT AIRS, MIDDLE CALMFIRST AND MIDDLE PARTS CLOUDY0000000233236
1762-04-27T09:00-14.8343.67496.7ST AUGUSTINES BAYSE172N16E60.00-19E, ENEMODERATEHAZY0000000233237
1762-04-28T09:00-14.0043.88260.0ST AUGUSTINES BAYS40N15E51.00-19SE, E, NESET SBW5 FATHOMSFIRST AND MIDDLE PARTS LIGHT AIRS, LATTER CALMFIRST AND MIDDLE PARTS CLOUDY0000000233238
1762-04-29T09:00-13.4343.951160.0ST AUGUSTINES BAYS1/2W7N23E37.00-19SEBE, SENONE FOUNDFIRST AND MIDDLE PARTS LIGHT AIRS, LATTER CALMFIRST AND MIDDLE PARTS CLOUDY0000000233239
1762-04-30T09:00-13.4543.77710.6JOANHAENE7N68E13.00-19SEBE, EBS, CALM, ELIGHT AIRS INCLINING TO CALM0000000233240
1762-05-01T00:00-13.133610.6JOHANNAENE7CALM, SSW, SEBE, CALMLIGHT AIRS INCLINING TO CALM0000000233241
1762-05-02T00:00-12.651010.6JOANHAENE7SSW, NE, CALM, EBSLIGHT AIRS INCLINING TO CALM0000000233242
1762-05-03T00:00-12.28902.6THE NW PART OF JOANHANE31EBS, CALM, ELIGHT BREEZESCLOUDY0000000233243
1762-05-04T00:00-12.173612.6THE NW PART OF JOANHASBW1/2 W11SE, CALMLIGHT BREEZESCLOUDY0000000233244
1762-05-13T09:00-10.1344.153611.5JOANHAS7EN7W123.00VAR. AZ. 17:24W-17SBW, SE, CALMLIGHT BREEZES INCLINING TO CALMHAZY0000000233245
1762-05-14T09:00-9.1544.711186.7JOANHAS7W61N30W69.00VAR. AMP. 17:14W-17SEMODERATECLOUDY0000000233246
1762-05-15T09:00-7.3345.111426.7JOANHAS10W98117.00VAR. AZ. 14:44W-16S, SSEMODERATECLOUDY0000000233247
1762-05-16T09:00-4.7844.9216419.0JOANHAS6W148N3W148.00VAR. AZ. 15:09W-16SFRESH GALESCLOUDY0000000233248
1762-05-17T09:00-3.0845.0715319.0JOANHAS5:35W183N8E114.00VAR. AMP. 14:17W-16S, SBEFRESH GALESCLOUDY0000000233249
1762-05-18T09:00-1.8346.6917719.0JOANHAS13W213N53E127.00VAR. AMP 14:17W-14SBE, S, SBWFRESH GALESCLOUDY0000000233250
1762-05-19T09:00-0.6548.1621319.0JOANHAS20W244N53E119.00VAR. AZ. 13:40W-12S, SWFRESH GALESCLOUDY0000000233251
1762-05-20T09:000.6249.8021319.0JOANHAS25W281N54E129.00VAR. AZ. 12:45W-12SWFRESH GALESCLOUDY0000000233252
1762-05-21T09:001.7851.8721319.0JOANHAS30W323N59E152.00VAR. AZ. 12:10W-12SWBW, SWFRESH GALESCLOUDY0000000233253
1762-05-22T08:002.7354.2920519.0JOANHAS35W364N70E160.00-9SW, SWBSFRESH GALESCLOUDY0000000233254
1762-05-23T08:003.6856.5823919.0JOANHAS39W406N68E153.00VAR. AZ. 9:44W-9SW, WSWFRESH GALESGREAT SWELL FROM SSWCLOUDY0000000233255
1762-05-24T08:004.7258.8224219.0JOANHAS42W452N66E157.00VAR. AZ. 7:42W-6WSWFRESH GALESSWELLCLOUDY0000000233256
1762-05-25T08:005.8861.0623019.0JOANHAS41W501N63E154.00VAR. AZ. 6:34W-6WSW, SWBWFRESH GALESCLOUDY0000000233257
1762-05-26T08:006.8763.2023219.0JOANHAS46W547N65E147.00VAR. AZ. 5:16W-4WSW, SWBWFRESH GALESCLOUDY0000000233258
1762-05-27T08:007.7365.3023219.0JOANHAS48W593S68E139.00VAR. AZ. 5:16W-4WSW, SWBWFRESH GALESCLOUDY0000000233259
1762-05-28T08:007.9567.4125519.0JOANHAS50W624N84E130.00VAR. AZ. 5:23W-4WSW, WBSFRESH GALESCLOUDY0000000233260
1762-05-29T07:007.8069.132686.7JOANHAS52W647S85E107.00VAR. AZ. 2:56W-2WBS, WMODERATEHAZY0000000233261
1762-05-30T07:008.2270.562796.7JOANHAS54W673N74E92.00VAR. AZ. 2:27W-2W, WBNMODERATEHAZY0000000233262
1762-05-31T07:008.2071.342686.7JOANHAS55W673E50.00VAR. AZ. 1:55W-2WMODERATEHAZY0000000233263
1762-06-01T07:007.7372.462686.7JOANHAS37W713S69E77.00VAR. AZ. 1:53W-2WSW, WMODERATEHAZY0000000233264
1762-06-02T07:007.7874.1526919.0JOANHAS37W713N88E104.00VAR. AZ. 1:18W-1WFRESH GALES AND SQUALLY0000000233265
1762-06-03T07:007.9276.0026919.0JOANHAS60W768N84E114.00VAR. AZ. 0:45W-1WFRESH GALES AND SQUALLYSOME SHOWERS OF RAIN1100000233266
1762-06-04T07:007.4776.9332519.0CAPE COMERINNNW10VAR. AMP. 00:11W-1W, NWBNFRESH GALES AND SQUALLY0000000233267
1762-06-05T07:006.4079.7022519.0CAPE COMERINN56W51S56E154.000W, SWFRESH GALES AND SQUALLY0000000233268
1762-06-06T07:005.4781.0828119.0CAPE COMERINN5W85S56E99.000SW, W, WBNFRESH GALES AND SQUALLY0000000233269
1762-06-07T07:006.6282.0027019.0DUNDER HEADS63W26N63E77.000WNW, WFRESH GALES AND SQUALLY0000000233270
1762-06-08T07:008.0981.7022519.0FRIARS HOODSW1/2W100WSW, SWFRESH GALES AND SQUALLY0000000233271
1762-06-09T07:009.5780.8623619.0TRINCONOMALES23E19N23W57.000S, WSW, SWBWFRESH GALES AND SQUALLY0000000233272
1762-06-10T07:0011.4080.0022519.0TRINCONOMALES29E371N32W129.000WBN, SWFRESH GALES AND SQUALLY0000000233273