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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 MARTIN cruise from Halifax to Charleston started at 1770-08-14 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.750647, 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: 39.282778 * Median Longitude: -70.681111 * South-bound Latitude: 33.930000 * West-bound Longitude: -75.060000 * North-bound Latitude: 42.400000 * East-bound Longitude: -64.270000
Date/Time Start: 1770-08-14T16:00:00 * Date/Time End: 1770-08-31T17:00:00
Event(s):
Martin_17700814_NMM_ADM/L/M73 * Latitude Start: 43.400000 * Longitude Start: -63.030000 * Latitude End: 31.830000 * Longitude End: -77.920000 * Date/Time Start: 1770-08-14T00:00:00 * Date/Time End: 1770-08-31T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Martin (Sloop), Voyage: Halifax - Charleston, 1st Observer: Thomas Hayward (Captain), 2nd Observer: Peter Rothe (1st Officer/Master), Company: Royal Navy, Other ship information: 24G 283BM
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:
354 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)
1770-08-14T16:0042.40-64.2724019.0CAPE SAMBRON12:58E43S12:58W130.00-8NW, WNW, WSWFRESH GALESCLEAR0000000a trivial correction was made in this observation163514
1770-08-15T16:0041.48-65.1436219.0CAPE SAMBRON22:09E64S39:17W71.00-8VARIABLEFIRST MODERATE, MID AND LATTER FRESH GALES AND SQUALLYRAINFIRST CLEAR0100000163515
1770-08-16T16:0040.83-65.743626.7CAPE SAMBRON25:48E81S41:06W52.00-8VARIABLEFIRST AND MID FRESH GALES AND SQUALLY, LATTER MODERATERAINCLOUDY0100000163516
1770-08-17T16:0040.42-66.531276.7CAPE SAMBRON31:14E96S54:14W49.00-8NBW, CALM, SEFIRST LIGHT AIRS AND CALM, MID AND LATTER MODERATECLOUDY0000000163517
1770-08-18T17:0040.23-68.2521919.0CAPE SAMBRON42:03E115S82:48W88.00-6SE, SWFIRST MODERATE, MID AND LATTER FRESH GALES AND SQUALLYRAINFAIR0100000163518
1770-08-19T17:0039.87-68.0421919.0CAPE SAMBRON39:35E126S5:12E23.00-6SWFRESH GALES AND SQUALLYRAIN0100000163519
1770-08-20T17:0040.13-68.602199.3CAPE SAMBRON44:45E123N63:26W36.00-6SWFRESH BREEZESCLOUDY0000000163520
1770-08-21T17:0039.90-68.8736219.0CAPE SAMBRON45:37E120S61:12W23.00-6VARIABLEFRESH GALES AND SQUALLYLIGHTNINGRAIN0100100163521
1770-08-22T17:0038.97-71.4236219.0CAPE SAMBRON50:24E142S64:22W140.00-6VARIABLEFRESH GALES AND SQUALLYLIGHTNINGRAIN0100100163522
1770-08-23T17:0039.33-72.60361CAPE SAMBRON56:36E187N69:52W64.00-4SW, CALMFIRST AND MID CLOUDY, LATTER SQUALLY AND CALMLIGHTNINGRAIN, SOME RAINCLOUDY0100100163523
1770-08-24T17:0039.38-73.052326.7CAPE SAMBRON57:55E193N34:20W31.00-4SWBW, SWBS, SW, SBE, SWBS, SW, SWBS, SWBWFIRST AND LATTER MODERATE, MID FRESH BREEZESCLOUDY0000000163524
1770-08-25T17:0039.07-72.772216.7CAPE SAMBRON56:07E195S27:40E22.00-4SWFIRST AND LATTER MODERATE, MID HARD SQUALLSTHUNDER AND LIGHTNINGRAINHAZY0100100163525
1770-08-26T17:0039.13-73.4922119.0CAPE SAMBRON58:11E203N84:24W43.00-4SWFIRST MODERATE, MID AND LATTER FRESH GALES AND SQUALLYCLOUDY0000000163526
1770-08-27T17:0038.82-74.15416.7CAPE HATTERASS3:45W69S7:20E12.00-4NW, NW, NBE, NEFIRST FRESH GALES, MID AND LATTER MODERATEFIRST HAZY, MID AND LATTER CLOUDY0000000163527
1770-08-28T17:0038.50-74.882216.7CAPE HENLOPENN36:35W8S45W27.00-4NE, SE, SWMODERATECLOUDY0000000163528
1770-08-29T17:0038.63-74.813566.7CAPE HENLOPENN44:20W6S44:20E17.00-4SW, WSW, NW, NFIRST AND MID FRESH GALES AND SQUALLY, LATTER MODERATETHUNDER AND LIGHTNINGRAINHAZY0100100163529
1770-08-30T17:0036.07-74.59362CAPE HENLOPENN8:10W56S4E154.000VARIABLESQUALLYRAINCLOUDY0100000163530
1770-08-31T17:0033.93-75.062319.0CAPE HENLOPENN0:19W98S10:15E130.000N, NBE, NNEFIRST AND MID STRONG GALES, LATTER FRESH GALESRAINCLOUDY0100000163531