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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 AEOLUS cruise from St. Johns to St. Johns started at 1781-08-28 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747232, 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: 42.385000 * Median Longitude: -48.660000 * South-bound Latitude: 38.620000 * West-bound Longitude: -52.470000 * North-bound Latitude: 47.270000 * East-bound Longitude: -46.540000
Date/Time Start: 1781-08-28T15:00:00 * Date/Time End: 1781-09-08T15:00:00
Event(s):
Aeolus_17810828_NMM_ADM/L/A45 * Latitude Start: 47.670000 * Longitude Start: -52.270000 * Latitude End: 47.670000 * Longitude End: -52.270000 * Date/Time Start: 1781-08-28T00:00:00 * Date/Time End: 1781-09-08T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Aeolus (5th Rate Frigate), Voyage: St Johns - St Johns, 1st Observer: George Keppel (Captain), 2nd Observer: William Fitcher (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 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
14 Current speed descriptionV descr
15 Wind force descriptionWind force descrAll reported wind forces on this day
16 Present weatherwwWeather description
17 Precipitation descriptionPrecip 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:
230 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 
Cur dir descr
(Direction of the current. Thi...)
14 
V descr
15 
Wind force descr
(All reported wind forces on t...)
16 
ww
(Weather description)
17 
Precip 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)
1781-08-28T15:0041.13-47.50326.7CAPE RACEN34W137N54W51.00-13NEFIRST FRESH BREEZES, LATTER MODERATELIGHTNINGCLEAR00001003580
1781-08-29T15:0039.90-47.62326.7CAPE RACEN30W156S5W74.00-13VARIABLE, NEMODERATE BREEZESCLEAR00000003581
1781-08-30T15:0039.07-47.621221.0CAPE RACEN28W173S50.00-13E, SELIGHT AIRSPLEASANT00000003582
1781-08-31T15:0038.68-47.90771.0CAPE RACEN26W177S8W22.00-13VARIABLE, ELIGHT AIRSHAILPLEASANT00000103583
1781-09-01T15:0038.62-47.803022.6CAPE RACEN27W178S20W5.00-13SW, NWNE1.5LIGHT BREEZESCLEAR00000003584
1781-09-02T15:0040.98-46.542119.3CAPE RACEN39W152N24E148.00-14WSW, SWFRESH BREEZESCLEAR00000003585
1781-09-03T15:0042.23-46.822349.3ST JOHNSN38W137N5W72.00-14WSWFRESH BREEZESCLOUDY00000003586
1781-09-04T15:0043.87-47.372292.6ST JOHNSN43W110N19W81.00-19SBW, WSWLIGHT BREEZESCLEAR THEN HAZY00100003587
1781-09-05T15:0044.60-50.121739.3ST JOHNSN36W72N58W129.00-18SBWFRESH BREEZES00100003588
1781-09-06T15:0045.50-51.022079.3ST JOHNSN30W48N40W70.00-18SWFRESH BREEZES00100003589
1781-09-07T15:0046.77-51.1436222.6ST JOHNSN56W35N4W75.00-18VARIABLEFIRST LIGHT BREEZES, MID AND LATTER STRONG GALES AND SQUALLYCLOUDY00000003590
1781-09-08T15:0047.27-52.4733122.6ST JOHNSN38W10N67W70.00-18NBWSTRONG GALES AND SQUALLYCLOUDY00000003591