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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 EMERALD cruise from New York to Uk started at 1783-08-05 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.749211, 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: 42.460000 * Median Longitude: -50.484444 * South-bound Latitude: 38.270000 * West-bound Longitude: -71.270000 * North-bound Latitude: 48.070000 * East-bound Longitude: -21.850000
Date/Time Start: 1783-08-05T17:00:00 * Date/Time End: 1783-08-22T13:00:00
Event(s):
Emerald_17830805_NMM_ADM/L/E151 * Latitude Start: 40.670000 * Longitude Start: -74.040000 * Latitude End: 49.450000 * Longitude End: -5.630000 * Date/Time Start: 1783-08-05T00:00:00 * Date/Time End: 1783-08-22T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Emerald (5th Rate Frigate), Voyage: New York - Uk, 1st Observer: Edward Shephard (Captain), 2nd Observer: Luke Feeling (1st Officer/Master), Company: Royal Navy, Other ship information: 32G 679BM
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 State of the sea descriptionState sea 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 IdentificationIDCLIWOC 2.1 line number
Size:
343 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 
State sea 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 
ID
(CLIWOC 2.1 line number)
1783-08-05T17:0039.63-71.272199.3NANTUCKETN35E44S66E93.00-6NE, SWFIRST LIGHT BREEZES, LATTER FRESH BREEZESFIRST CLOUDY, LATTER HAZY000000089541
1783-08-06T17:0038.38-69.93399.3NANTUCKETN41E37S40E98.00-6NEFRESH BREEZESCLOUDY000000089542
1783-08-07T17:0038.27-69.653622.6CORVON87E587S68E15.00-6VARIABLELIGHT WINDSCLOUDY000000089543
1783-08-08T16:0038.87-67.373072.6CORVON88E559N76E118.00-8NWLIGHT WINDSCLOUDY000000089544
1783-08-09T16:0039.40-64.852179.3CORVON89E472N74E122.00-8SWFRESH BREEZESCLEAR000000089545
1783-08-10T16:0040.20-61.5030522.6CORVOS89E472N74E161.00-10NWSTRONG GALES AND SQUALLY000000089546
1783-08-11T16:0040.63-59.1530519.0CORVOS87E425N72E113.00-10NWFRESH GALESCLOUDY000000089547
1783-08-12T16:0040.67-57.053039.3CORVOS87E399E96.00-12NWFRESH BREEZESCLEAR000000089548
1783-08-13T16:0041.47-54.92339.3LIZARDN76E713N64E107.00-12NEFRESH BREEZESCLEAR000000089549
1783-08-14T15:0042.78-50.6811719.0LIZARDN77E647N67E205.00-18WBS, SEFRESH GALESHAZY000000089550
1783-08-15T15:0042.97-47.2013919.0LIZARDN76E593N86E153.00-19SSEFRESH GALESGREAT SWELL FROM NWHAZY000000089551
1783-08-16T15:0043.20-45.42262.6LIZARDN76E569N81E79.00-19SW, NELIGHT BREEZESCLEAR000000089552
1783-08-17T15:0044.33-40.552059.3LIZARDN76E493N72E223.00-20SWFRESH BREEZESRAINHAZY010000089553
1783-08-18T14:0045.33-36.932956.7LIZARDN77E437N69E170.00-20NWMODERATECLOUDY000000089554
1783-08-19T14:0045.97-33.822059.3LIZARDN78E391N73E131.00-20SWFIRST LIGHT AIRS, LATTER FRESH BREEZESLATTER CLEAR000000089555
1783-08-20T14:0046.83-30.33246.7LIZARDN77E339N72E278.00-21NEFIRST FRESH BREEZES, LATTER MODERATEFIRST HAZY, LATTER CLOUDY000000089556
1783-08-21T14:0047.28-26.253626.7LIZARDN79E281N77E177.00-21VARIABLEMODERATECLOUDY000000089557
1783-08-22T13:0048.07-21.852016.7LIZARDN80E221N78E180.00-24SWMODERATECLOUDY000000089558