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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 ROEBUCK cruise from Nore to New York started at 1779-07-25 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.751780, 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: 43.179167 * Median Longitude: -26.636667 * South-bound Latitude: 37.530000 * West-bound Longitude: -46.150000 * North-bound Latitude: 48.830000 * East-bound Longitude: -11.360000
Date/Time Start: 1779-07-25T13:00:00 * Date/Time End: 1779-08-29T15:00:00
Event(s):
Roebuck_17790725_NMM_ADM/L/R160 * Latitude Start: 49.250000 * Longitude Start: -6.320000 * Latitude End: 40.670000 * Longitude End: -74.040000 * Date/Time Start: 1779-07-25T00:00:00 * Date/Time End: 1779-08-29T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Roebuck (5th Rate Frigate), Voyage: Nore - New York, 1st Observer: Andrew Snape Hammond (Captain), 2nd Observer: Andrew Snape Douglas (1st Officer/Master), Company: Royal Navy, Other ship information: 44G 879BM
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 CommentComment
25 IdentificationIDCLIWOC 2.1 line number
Size:
680 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 
Comment
25 
ID
(CLIWOC 2.1 line number)
1779-07-25T13:0048.28-11.362256.7CAPE CLEARN22E65NW40.00-23WSWMODERATECLOUDY0000000213008
1779-07-26T13:0047.70-12.232256.7CAPE CLEARN27E81NW50.00-23WSWMODERATECLOUDY WEATHER0000000213009
1779-07-27T13:0048.02-12.712816.7CAPE CLEARN33E78SWBW27.00-23NWBWMODERATECLOUDY WEATHER0000000213010
1779-07-28T13:0048.83-13.4624719.0CAPE CLEARN47E72WNW58.00-23WFRESH GALES0010000213011
1779-07-29T13:0048.80-13.8120219.0CAPE CLEAR49E76WNW14.00-23SWFRESH GALES0010000213012
1779-07-30T13:0047.50-14.4525819.0CAPE CLEARN49E101SWBS82.00-23WBNFRESH GALESFAIR0000000213013
1779-07-31T13:0046.98-14.653281.0CAPE CLEARN38E110WBN32.00-21NBWLIGHT AIRSFAIR0000000213014
1779-08-01T13:0047.50-16.0329219.0CAPE CLEARN49W118WSW69.00-23NWFRESH GALESFAIR0000000213015
1779-08-02T13:0046.33-16.88361CAPE CLEARN45E14278.00-21CALMA GREAT SWELL TO THE WESTWARDCLOUDY0000000a trivial correction was made in this observation213016
1779-08-03T13:0045.48-17.412836.7CAPE CLEARN43E159SWBW56.00-21NWBWMODERATEFAIR0000000213017
1779-08-04T13:0045.85-18.052606.7CAPE CLEARN47E160NBW35.00-21WBNMODERATECLOUDY0000000213018
1779-08-05T13:0044.93-18.9631719.0CAPE CLEARN45E180W68.00-21NNWFRESH GALES AND SQUALLYSHOWERS1000000213019
1779-08-06T13:0044.52-19.6630519.0CAPE CLEARN46E195WBS39.00-21NWBNFRESH GALES AND SQUALLYSHOWERS1000000213020
1779-08-07T13:0043.57-20.5328319.0CAPE CLEARN45E217SWBW68.00-21NWBWFRESH GALESHAZY THROUGHOUT0000000213021
1779-08-08T13:0042.45-20.532622.6CAPE CLEARN41E234SWBS67.00-19WBNLIGHT BREEZESFAIR0000000213022
1779-08-09T13:0042.37-20.552512.6CAPE CLEARN41E236SSW5.00-19WLIGHT BREEZESFAIR0000000213023
1779-08-10T13:0042.80-20.982272.6CAPE CLEARN43E233NW32.00-21WSWLIGHT BREEZESFAIR0000000213024
1779-08-11T13:0042.47-21.262852.6CAPE CLEARN43E241SWBW24.00-19NWBWLIGHT BREEZESFAIR0000000213025
1779-08-12T14:0042.33-22.953610.0CAPE CLEARN47E25576.00-18CALMCALM0000000213026
1779-08-13T14:0042.85-23.6320419.0CAPE CLEARN50E259WNW32.00-21SWFRESH GALESHAZY0000000213027
1779-08-14T14:0042.52-25.083052.6CAPE CLEARN51E281WBS68.00-21NWBNLIGHT WINDSA GREAT SWELL FROM THE NNWFAIR0000000213028
1779-08-15T14:0042.30-28.086219.0CAPE CLEARN56E320WBN140.00-17EBNFRESH GALESCLOUDY0000000213029
1779-08-16T14:0042.03-29.782819.0CAPE CLEARN58E348WNW78.00-17NEFRESH GALESCLOUDY0000000213030
1779-08-17T14:0042.05-31.68961.0CAPE CLEARN60E374WNW85.00-17ESELIGHT AIRSCLOUDY0000000213031
1779-08-18T14:0042.15-34.21976.7CAPE CLEARN61E384WNW123.00-16ESEMODERATECLOUDY0000000213032
1779-08-19T14:0042.23-36.051196.7CAPE CLEARN63E405WNW82.00-16SEMODERATEHAZY THROUGHOUT0000000213033
1779-08-20T15:0042.40-38.461882.6CAPE CLEARN65:45E433WNW108.00-15SSWLIGHT BREEZESFAIR0000000213034
1779-08-21T15:0041.88-38.6822119.0CAPE CLEARN64:47E442NWBN33.00-15SWBWFRESH GALESCLOUDY0000000213035
1779-08-22T15:0040.35-39.312896.7CAPE CLEARN42:09E468SWBW96.00-15NWBWMODERATEFAIR THOUGHOUT0000000213036
1779-08-23T15:0039.18-40.332552.6CAPE CLEARN60:45E494SW84.00-15WBWLITTLE WINDCLOUDY0000000213037
1779-08-24T15:0038.37-41.4023319.0CAPE CLEARN60:08E519W170.00-15WSWFRESH GALESFAIR0000000213038
1779-08-25T15:0038.22-43.2032419.0CAPE CLEARN61:13E543W86.00-14NNWFRESH GALES AND SQUALLY0000000213039
1779-08-26T15:0037.53-44.663356.7CAPE CLEARN61:10E570WBN81.00-14NBWMODERATEFAIR0000000213040
1779-08-27T15:0037.58-45.7596.7CAPE CLEARN62:00E584WNW52.00-14NNEMODERATECLOUDY0000000213041
1779-08-28T15:0037.67-46.013571.0CAPE CLEARN62:15E585NWBW13.00-14NBELIGHT AIRSSWELL FROM THE NEFAIR0000000213042
1779-08-29T15:0038.43-46.152342.6CAPE CLEARN64E575NW52.00-14WSWLIGHT BREEZESFAIR0000000213043