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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 OTTER cruise from Hammoze to Hammoze started at 1755-03-21 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.751009, 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: 48.607317 * Median Longitude: -5.986341 * South-bound Latitude: 47.830000 * West-bound Longitude: -7.170000 * North-bound Latitude: 49.370000 * East-bound Longitude: -5.150000
Date/Time Start: 1755-03-21T12:00:00 * Date/Time End: 1755-04-30T12:00:00
Event(s):
Otter_17550321_NMM_ADM/L/O58 * Latitude Start: 49.370000 * Longitude Start: -5.850000 * Latitude End: 49.370000 * Longitude End: -5.850000 * Date/Time Start: 1755-03-21T00:00:00 * Date/Time End: 1755-04-30T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Otter (Sloop), Voyage: Hammoze - Hammoze (Cruising), 1st Observer: Edward Le Cras (Captain), 2nd Observer: Francis Samuel Drake (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 8G, 204BM
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 ClearnessClearness
17 GustsGusts1 If wind gusts are reported
18 Precipitation/RainRain1 If rain was reported
19 FogFog1 If fog was reported
20 Snow typeSnow1 If snow was reported
21 ThunderThunder1 If thunder and or lightning was reported
22 HailHail1 If hail was reported
23 Sea iceSea ice1 If sea-ice or icebergs were reported
24 CommentComment
25 IdentificationIDCLIWOC 2.1 line number
Size:
825 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 
Clearness
17 
Gusts
(1 If wind gusts are reported)
18 
Rain
(1 If rain was reported)
19 
Fog
(1 If fog was reported)
20 
Snow
(1 If snow was reported)
21 
Thunder
(1 If thunder and or lightning...)
22 
Hail
(1 If hail was reported)
23 
Sea ice
(1 If sea-ice or icebergs were...)
24 
Comment
25 
ID
(CLIWOC 2.1 line number)
1755-03-21T12:0049.37-5.852181.0RAMSHEADN30:00E20S30:0E60.00-18SE, CALM, SWBWFIRST PART MODERATE, LATTER LIGHT AIRS INTERMIXED WITH CALMSLATTER RAINFIRST PART CLOUDY0100000a trivial correction was made in this observation181824
1755-03-22T12:0049.20-6.092072.6RAMSHEADN32:26E25S42:0W13.00-18SWFIRST AND LATTER LITTLE WINDS, MIDDLE MODERATECLOUDY0000000a trivial correction was made in this observation181825
1755-03-23T12:0048.93-6.042976.7USHANTSBW6-18SW-NWMODERATECLOUDY0000000a trivial correction was made in this observation181826
1755-03-24T12:0048.67-5.9927519.0USHANTS74:52E12N74:52E39.00-18NNW, SWBW, WNWFIRST PART MODERATE, MIDDLE AND LATTER FRESH GALESMIDDLE AND LATTER RAINFIRST PART HAZY0100000a trivial correction was made in this observation181827
1755-03-25T12:0048.67-5.4420719.0USHANTS74:14E6S74:54E23.00-18WNW, SWFRESH GALESHAZY0000000a trivial correction was made in this observation181828
1755-03-26T12:0048.57-5.6420719.0USHANTS57:00E9N36:0W14.00-18SWFRESH GALESHAZY0000000a trivial correction was made in this observation181829
1755-03-27T12:0048.72-5.452076.7USHANTS46:17E7E7.00-18SWFIRST PART FRESH GALES, MIDDLE AND LATTER MODERATEMIDDLE AND LATTER PARTS THICK FOGGFIRST PART HAZY0010000a trivial correction was made in this observation181830
1755-03-28T12:0048.59-5.54207USHANTEBS5-18SWFIRST PART LITTLE WIND, MIDDLE FRESH GALESTHIS NIGHT A VISIBLE ECLIPSE OF THE MOON, CONTINUANCE 2 HOURS 3/4FIRST AND MIDDLE PARTS HAZY0000000a trivial correction was made in this observation181831
1755-03-29T12:0048.47-5.622076.7USHANTN79:42E7S79:42W22.00-18SWFIRST AND MIDDLE PARTS FRESH GALES, LATTER MODERATEFIRST AND MIDDLE PARTS HAZY0000000a trivial correction was made in this observation181832
1755-03-30T12:0048.68-5.5520719.0USHANTS61:07E7N14:0E13.00-18SWFIRST AND MIDDLE PARTS MODERATE, LATTER FRESH GALESHAZY0000000a trivial correction was made in this observation181833
1755-03-31T12:0048.30-5.8720719.0USHANTN70:00E12S70:0W35.00-18SWFRESH GALESHAZY0000000a trivial correction was made in this observation181834
1755-04-01T12:0048.45-6.102076.7USHANTN85:23E13N48:0W13.00-18SWFIRST AND MIDDLE PARTS FRESH GALES, LATTER MODERATELATTER PART FOGGYFIRST AND MIDDLE PARTS HAZY0010000a trivial correction was made in this observation181835
1755-04-02T12:0048.68-6.7020719.0USHANTS83:40E22N59:0W27.00-18SWFIRST PART FRESH GALES, MIDDLE AND LATTER FRESH GALESFIRST PART THICK FOGMIDDLE AND LATTER HAZY0010000a trivial correction was made in this observation181836
1755-04-03T12:0049.00-6.4520726.8USHANTS61:32E20N68:0E18.00-18SWFIRST PART FRESH GALES, LATTER HARD GALESLATTER SMALL RAINFIRST PART HAZY0100000a trivial correction was made in this observation181837
1755-04-04T12:0048.90-5.152416.7USHANTS54:14E13S74:45E23.00-18WSW, NNW, WBSFIRST PART HARD GALES, MIDDLE FRESH GALES, LATTER MODERATEFIRST AND MIDDLE PARTS RAIN0100000a trivial correction was made in this observation181838
1755-04-05T12:0048.43-5.972072.6USHANTN83:40E12S6:07W28.00-18SWFIRST PART MODERATE, MIDDLE AND LATTER LITTLE WINDHAZY0000000a trivial correction was made in this observation181839
1755-04-06T12:0047.83-5.6523019.0USHANTN28:49E15S28:49W46.00-18SW, NW, WSWFRESH GALES AND SQUALLYSOME RAIN0100000a trivial correction was made in this observation181840
1755-04-07T12:0047.93-6.1924119.0USHANTN52:43E19N74:44W22.00-18SWBW, WNW, WBSFRESH GALES AND SQUALLYSOME RAIN0100000a trivial correction was made in this observation181841
1755-04-08T12:0048.23-6.102416.7USHANTN73:30E19N21:15W19.00-18WNW-WBSMODERATEFIRST PART FOGGYMIDDLE PART FAIR, LATTER CLOUDY0010000a trivial correction was made in this observation181842
1755-04-09T12:0048.87-7.0726319.0USHANTS74:37E28N34:23W46.00-18WBS-WBNFRESH GALESHAZY0000000a trivial correction was made in this observation181843
1755-04-10T12:0048.73-7.171626.7USHANTS80:32E29S26:34W9.00-18WBN, SW-SMODERATEFOGGY0000000a trivial correction was made in this observation181844
1755-04-11T12:0048.83-6.3720719.0USHANTS68:58E19N79:23W32.00-18S-SWFIRST PART MODERATE, LATTER FRESH GALESFIRST PART FOGGYMIDDLE AND LATTER HAZY0010000a trivial correction was made in this observation181845
1755-04-12T12:0048.77-6.6020719.0USHANTS75:32E21S68:0W11.00-18SWFIRST PART FRESH GALES, LATTER FRESH GALES AND SQUALLYLATTER PART SHOWERS OF RAINFIRST PART CLOUDY, MIDDLE CLEAR1100000a trivial correction was made in this observation181846
1755-04-13T12:0048.67-6.1020719.0USHANTS7624E14S74:00E22.00-18SWFRESH GALES AND SQUALLY0000000a trivial correction was made in this observation181847
1755-04-14T12:0048.73-6.0920719.0USHANTS71:00E14N14:00E4.00-18SWFRESH GALESHAZY0000000a trivial correction was made in this observation181848
1755-04-15T12:0048.97-6.3420719.0USHANTS61:00E19N35:33W17.00-18SWFRESH GALESHAZY0000000a trivial correction was made in this observation181849
1755-04-16T12:0048.97-6.472076.7USHANTS63:26E21W5.00-18SWFIRST PART FRESH GALES, MIDDLE AND LATTER MODERATEMIDDE AND LATTER FOGGYFIRST PART HAZY0010000a trivial correction was made in this observation181850
1755-04-17T12:0048.82-6.002072.6USHANTS63:50E14S62:00E19.00-18SWFIRST PART MODERATE, MIDDLE AND LATTER LITTLE WINDMIDDLE AND LATTER THICK FOGFIRST PART FAIR0010000a trivial correction was made in this observation181851
1755-04-18T12:0049.12-5.872306.7USHANTS39:36E16S15:32E19.00-18WBN, NW, WSWMODERATEFOGGY0000000a trivial correction was made in this observation181852
1755-04-19T12:0048.92-5.6517319.0USHANTS1/2W5-18SE-SBWFIRST AND MIDDLE PARTS LITTLE WIND, LATTER FRESH GALESFIRST AND MIDDLE PARTS FOGGYLATTER HAZY0010000a trivial correction was made in this observation181853
1755-04-20T12:0048.72-5.4214019.0USHANTS47:00E6N47:00E19.00-18SBW-SSEFIRST AND LATTER PARTS FRESH GALES, MIDDLE MODERATEFIRST AND LATTER PARTS HAZY, MIDDLE FAIR0000000a trivial correction was made in this observation181854
1755-04-21T12:0048.23-5.592306.7USHANTS56:19E10S52:44W26.00-18SBE, S, WSWMODERATEHAZY0000000a trivial correction was made in this observation181855
1755-04-22T12:0048.23-5.672076.7USHANTN52:44E9W4.00-18SWMODERATEHAZY0000000a trivial correction was made in this observation181856
1755-04-23T12:0048.27-6.302076.7USHANTN74:10E17N85:26W25.00-18SWMODERATEHAZY0000000a trivial correction was made in this observation181857
1755-04-24T12:0048.47-6.052076.7USHANTN87:00E13N39:19E16.00-18SWMODERATEHAZY0000000a trivial correction was made in this observation181858
1755-04-25T12:0048.23-5.4520719.0USHANTN47:43E7N59:45E28.00-18SWFRESH GALESSOME RAINHAZY0100000a trivial correction was made in this observation181859
1755-04-26T12:0048.33-5.372076.7USHANTN52:00E8N56:0E4.00-18SWMODERATEHAZY0000000a trivial correction was made in this observation181860
1755-04-27T12:0048.41-5.661286.7USHANTENE1/2E8-18SSW-SEBSMODERATECLOUDY0000000a trivial correction was made in this observation181861
1755-04-28T12:0048.48-5.9529719.0USHANTN87:50E9N59:0W12.00-18NWFIRST AND MIDDLE PARTS MODERATE, LATTER FRESH GALES AND SQUALLYLATTER SHOWERS OF RAINFIRST AND MIDDLE PARTS CLOUDY1100000a trivial correction was made in this observation181862
1755-04-29T12:0048.68-6.0430819.0USHANTS75:34E14N14:0W12.00-18WNW-NWBNFIRST AND MIDDLE PARTS FRESH GALES AND SQUALLY, LATTER FRESH GALESLATTER CLOUDY0000000a trivial correction was made in this observation181863
1755-04-30T12:0047.83-6.8218519.0USHANTN60:15E27S32:07W60.00-18NNW-SSWFRESH GALESHAZY0000000a trivial correction was made in this observation181864