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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 RATTLER cruise from Fayal to St. Johns started at 1807-04-17 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.751687, 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: 39.763333 * Median Longitude: -42.088889 * South-bound Latitude: 37.780000 * West-bound Longitude: -49.950000 * North-bound Latitude: 43.330000 * East-bound Longitude: -32.100000
Date/Time Start: 1807-04-17T14:00:00 * Date/Time End: 1807-05-04T15:00:00
Event(s):
Rattler_18070417_NMM_ADM/L/R61 * Latitude Start: 38.030000 * Longitude Start: -29.330000 * Latitude End: 47.670000 * Longitude End: -52.270000 * Date/Time Start: 1807-04-17T00:00:00 * Date/Time End: 1807-05-04T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Rattler (Sloop), Voyage: Fayal, Azores - St Johns, 1st Observer: James Agassiz (Captain), Company: Royal Navy, Other ship information: 16G 361BM
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 State of the sea descriptionState sea descr
17 ClearnessClearness
18 GustsGusts1 If wind gusts are reported
19 Precipitation/RainRain1 If rain was reported
20 FogFog1 If fog was reported
21 Snow typeSnow1 If snow was reported
22 ThunderThunder1 If thunder and or lightning was reported
23 HailHail1 If hail was reported
24 Sea iceSea ice1 If sea-ice or icebergs were reported
25 IdentificationIDCLIWOC 2.1 line number
Size:
348 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 
State sea descr
17 
Clearness
18 
Gusts
(1 If wind gusts are reported)
19 
Rain
(1 If rain was reported)
20 
Fog
(1 If fog was reported)
21 
Snow
(1 If snow was reported)
22 
Thunder
(1 If thunder and or lightning...)
23 
Hail
(1 If hail was reported)
24 
Sea ice
(1 If sea-ice or icebergs were...)
25 
ID
(CLIWOC 2.1 line number)
1807-04-17T14:0039.65-32.102039.3CORVON84E16N79W47.00-22SWBS, WBS, VARIABLE, WBN, WFRESH BREEZESAM RAINPM CLOUDY0100000207203
1807-04-18T14:0040.38-33.4229.3CORVOS66E32N44W81.00-21W, WBS, NWBW, NW, WNW, VARIABLEFRESH BREEZESCLOUDY0000000207204
1807-04-19T14:0039.47-34.603399.3CORVON75:30E44SW77.00-21NWBW, NNE, ENEAM CALM, NOON FRESH BREEZES, PM FRESH BREEZESRAINAM SWELL SETTING FROM THE NORTHWARD0100000207205
1807-04-20T14:0038.12-37.423289.3S PART BANKN76W238S74W137.00-21N, NWBN, WBS, NW, WBN, WNWAM FRESH BREEZES AND SQUALLY, NOON FRESH BREEZES0000000207206
1807-04-21T15:0037.97-38.2539.3S. PART BANKN73W236W44.00-20WSW, VARIABLE, SEAM HEAVY SQUALL, NOON FRESH BREEZES, PM FRESH BREEZESRAINCLOUDY WEATHER0100000207207
1807-04-22T15:0037.78-40.003186.7S. PART BANKN72W208S83W84.00-20NBW, N, NWBN, WNW, WBSAM MODERATE BREEZES, NOON MODERATE, PM LIGHT BREEZES0000000207208
1807-04-23T15:0038.32-41.322289.3S. PART BANKN73W183N68W67.00-20SSW, WBS, WBN, W, WNWAM MODERATE BREEZES, NOON FRESH BREEZES, PM STRONG BREEZES AND SQUALLYAM RAINSWELL FROM THE NORTHWARDCLOUDY0100000207209
1807-04-24T15:0038.95-41.552849.3S. PART BANKN77W181N10W40.00-20NNW, NBW, NWBN, NBEAM STRONG GALES AND HEAVY SQUALLS, NOON FRESH BREEZES, PM FRESH BREEZES0000000207210
1807-04-25T15:0039.50-41.3039.3S. PART BANKN80W173N19E29.00-20NWBN, NBE, NBW, NNE, NNE1/2E, NEAM FRESH BREEZES AND SQUALLY, NOON FRESH BREEZES, PM FRESH BREEZES AND SQUALLYRAINSWELL FROM THE NE0100000207211
1807-04-26T15:0039.02-42.22149.3S. PART BANKN76W164S41W37.00-20NNE1/2E, NNE, NE, NBE, N, NBWAM FRESH BREEZES AND SQUALLY, PM FRESH BREEZESCLOUDY0000000207212
1807-04-27T15:0038.37-44.083626.7S. PART BANKN70W154S64W88.00-18N, NBW, NNW, NNW1/2W, NWBNAM FRESH BREEZES, NOON MODERATE, PM MODERATECLOUDY0000000207213
1807-04-28T15:0038.03-45.252866.7S. PART BANKN63W145S73W58.00-18NNW, NWAM MODERATE BREEZE, NOON MODERATE, PM FRESH BREEZESAM HAZY, PM CLOUDY0000000207214
1807-04-29T15:0039.65-45.702862.6S. PART BANKN77W120N8W99.00-18WBN, W, NNW, NNEAM LIGHT BREEZES, PM FRESH BREEZESAM CLOUDY, PM HAZY0000000207215
1807-04-30T15:0040.20-46.723626.7S. PART BANKN81W273N57W55.00-18NE, NEBE, NNE, NBEAM MODERATE, PM LIGHT BREEZES0000000207216
1807-05-01T15:0041.30-46.972636.7S. PART BANKN86W100N21W31.00-18NWBN, NW, WNWAM FRESH BREEZES, NOON MODERATE, PM MODERATE BREEZESAM CLEAR, PM CLOUDY0000000207217
1807-05-02T15:0042.73-48.772376.7S. PART BANKS64W79N43W118.00-22WSW, SWBWAM LIGHT BREEZES, NOON MODERATE, PM MODERATE BREEZESTHICK FOGRAIN0110000207218
1807-05-03T15:0043.33-49.951929.3S. PART BANKN18W67N55W63.00-22SBW, SSWAM MODERATE BREEZES, NOON FRESH BREEZES, PM FRESH BREEZESTHICK FOGRAIN0110000207219
1807-05-04T15:0042.97-47.981819.3S. PART BANKS57W72S75W88.00-22SBW1/2W, S, VARIABLE, SWBSAM FRESH BREEZES, NOON FRESH BREEZES, PM MODERATETHICK FOGSMALL RAINPM HAZY0100000207220