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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 CHATHAM cruise from Corvo to Madras started at 1762-08-05. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747879, 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). PANGAEA, https://doi.org/10.1594/PANGAEA.611088

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RIS CitationBibTeX Citation

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: 3.929231 * Median Longitude: 60.927692 * South-bound Latitude: -11.750000 * West-bound Longitude: 43.480000 * North-bound Latitude: 8.920000 * East-bound Longitude: 78.820000
Date/Time Start: 1762-08-05T00:00:00 * Date/Time End: 1762-09-05T00:00:00
Event(s):
Chatham_17620805_NMM_ADM/L/C124 * Date/Time Start: 1762-08-05T00:00:00 * Date/Time End: 1762-09-05T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Chatham (4th Rate Frigate), Voyage: Corvo - Madras, 1st Observer: Thomas Lynn (Captain), 2nd Observer: John Yetts (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 50G 1055BM
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
--1 If position is considered to be coastal (in port or near coastal disturbances)
10 CourseCourseCourse of the ship during the past 24 hours
11 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
12 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.
13 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.
14 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
15 Current speed descriptionV descr
16 Wind force descriptionWind force descrAll reported wind forces on this day
17 Present weatherwwWeather description
18 Precipitation descriptionPrecip descr
19 State of the sea descriptionState sea descr
20 ClearnessClearness
21 GustsGusts1 If wind gusts are reported
22 Precipitation/RainRain1 If rain was reported
23 FogFog1 If fog was reported
24 Snow typeSnow1 If snow was reported
25 ThunderThunder1 If thunder and or lightning was reported
26 HailHail1 If hail was reported
27 Sea iceSea ice1 If sea-ice or icebergs were reported
28 IdentificationIDCLIWOC 2.1 line number
Size:
577 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)

-
(1 If position is considered t...)
10 
Course
(Course of the ship during the...)
11 
Distance [arbitrary units]
(Distance travelled during the...)
12 
Decl [deg]
(It is generally accepted by t...)
13 
Wind dir descr
(All reported wind directions ...)
14 
Cur dir descr
(Direction of the current. Thi...)
15 
V descr
16 
Wind force descr
(All reported wind forces on t...)
17 
ww
(Weather description)
18 
Precip descr
19 
State sea descr
20 
Clearness
21 
Gusts
(1 If wind gusts are reported)
22 
Rain
(1 If rain was reported)
23 
Fog
(1 If fog was reported)
24 
Snow
(1 If snow was reported)
25 
Thunder
(1 If thunder and or lightning...)
26 
Hail
(1 If hail was reported)
27 
Sea ice
(1 If sea-ice or icebergs were...)
28 
ID
(CLIWOC 2.1 line number)
1762-08-05T00:00-11.832932.6JOHANNASBW5WNWLIGHT BREEZESCLEAR000000040954
1762-08-06T00:00-11.63232.6COMERO ISLANDEBN8SW, CALM, NNELIGHT BREEZESCLEAR000000040955
1762-08-07T09:00-11.7543.48676.7COMERO ISLANDS59W16N19E48.00-17CALM, N, E1/2NFIRST PART LIGHT BREEZES, MIDDLE AND LATTER MODERATE BREEZESFIRST PART CLEAR, MIDDLE AND LATTER CLOUDY000000040956
1762-08-08T09:00-9.8244.08966.7COMERO ISLANDS39W26N32E66.00-17CALM, SBE, ESESET NWBW1 KT/HRFIRST PART CALM, MIDDLE AND LATTER MODERATE BREEZESSOME RAIN010000040957
1762-08-09T09:00-7.0744.231089.3COMERO ISLANDSBW1/2W79N8:7E128.00-16SEBEFRESH BREEZESCLOUDY000000040958
1762-08-11T09:00-3.4044.5610815.4COMERO ISLANDS13:7W166N57E129.00-16SEBS-SEBEMODERATE GALESHAZY000000040959
1762-08-12T09:00-1.5346.1117715.4COMERO ISLANDS19W210N42E132.00-14SBWMODERATE GALESHAZY000000040960
1762-08-13T09:000.5047.8621319.0COMERO ISLANDS25W264N43E167.00-12SBE-SWFRESH GALES WITH SQUALLSRAINCLOUDY010000040961
1762-08-14T09:001.9849.941919.3COMERO ISLANDS30W308N34E161.00-12SSWA PLEASANT TRADE WINDCLOUDY000000040962
1762-08-15T09:003.5351.882149.3COMERO ISLANDS34W352N57E150.00-11SWA PLEASANT TRADE WINDCLOUDY000000040963
1762-08-16T08:004.4254.542169.3COMERO ISLANDS38W404N69E181.00-9SWA PLEASANT TRADE WINDCLOUDY000000040964
1762-08-17T08:004.9056.992169.3COMERO ISLANDS43W445E11N156.00-9SSW-SWA PLEASANT TRADE WINDCLOUDY000000040965
1762-08-18T08:006.0359.012199.3COMERO ISLANDS44:30W492N79E136.00-6SWA PLEASANT TRADE WINDCLOUDY000000040966
1762-08-19T08:006.8861.062429.3COMERO ISLANDS46:30W538E23N142.00-6WSWA PLEASANT TRADE WINDLARGE SWELL FROM WCLOUDY000000040967
1762-08-20T08:007.1862.642449.3COMERO ISLANDS48:37W575E16N107.00-4WSWA PLEASANT TRADE WINDSOME RAIN IN THE NIGHTCLOUDY010000040968
1762-08-21T08:007.2263.761872.6COMERO ISLANDS51W595E4N76.00-4WBS-SBWMAJOR PART LIGHT BREEZESCLEAR000000040969
1762-08-22T08:007.2364.22641.0COMERO ISLANDS51W605E4N37.00-4E, CALM, ENELIGHT AIRS AND CALM000000040970
1762-08-23T08:007.2765.212219.3COMERO ISLANDS52W620E2N68.00-4SSE-SWFIRST PART LIGHT AIRS AND CALM, MIDDLE AND LATTER FRESH BREEZES WITH SOME SQUALLSMIDDLE AND LATTER SOME RAINGREAT SWELL FROM N010000040971
1762-08-24T08:007.2865.601761.0COMERO ISLANDS52W630E14N33.00-4SW, CALM, SLIGHT AIRS AND CALM000000040972
1762-08-25T08:007.7567.072896.7COMERO ISLANDS53W668E16N100.00-4WNWMODERATE BREEZESSMOOTH WATER000000040973
1762-08-26T07:007.5868.392686.7COMERO ISLANDS56W636E2N87.00-2WMODERATE BREEZESSMOOTH WATER000000040974
1762-08-27T07:007.2570.143476.7COMERO ISLANDS56W726EBN1/2N118.00-2NBWMODERATE BREEZES WITH SOME SQUALLSRAIN010000040975
1762-08-28T07:008.5272.002916.7COMERO ISLANDS57W756ENE131.00-2NW-WNWMODERATE BREEZES WITH SOME SQUALLSRAIN010000040976
1762-08-29T07:008.9273.722926.7COMERO ISLANDS59W784E19N116.00-1WNWMODERATESMOOTH WATERCLOUDY000000040977
1762-08-30T07:008.7375.003596.7COMERO ISLANDS60W810E86.00-1NNW-NMODERATECLOUDY000000040978
1762-08-31T07:008.6776.27101.0THE RED CLIFFSEBS2-1N, WNW, CALM, NBELIGHT AIRSCLEAR000000040979
1762-09-01T07:007.5277.543269.3ANJANGONBW60NWBNFRESH BREEZESHAZY000000040980
1762-09-02T07:006.3778.822596.7CAPE COMERINENW1/4N34SE1/2S112.000WBSMODERATE BREEZESCLOUDY000000040981
1762-09-03T00:005.65214DONDERA HEADNE1/2E41WBN-SWBSFIRST PART MODERATE BREEZES, MIDDLE AND LATTER SQUALLYMIDDLE AND LATTER RAINFIRST PART CLOUDY010000040982
1762-09-04T00:007.472489.3FRYERS HOODWBN41WBS-WSWFRESH BREEZESCLEAR000000040983
1762-09-05T00:007.972146.7SUGAR LOAFWBS8SBW, NW, SWBSMODERATEHAZY000000040984