Citation:

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

Project(s):

Climatological Database for the Worlds Oceans: 1750-1854 (CLIWOC)

Funding:

Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00090 : Climatological Database for the Worlds Oceans: 1750-1854

Coverage:

Median Latitude: -20.450769 * Median Longitude: 60.153077 * South-bound Latitude: -20.870000 * West-bound Longitude: 56.490000 * North-bound Latitude: -20.130000 * East-bound Longitude: 62.480000

Date/Time Start: 1761-07-27T08:00:00 * Date/Time End: 1761-08-08T08:00:00

Event(s):

Baleine_17610727_NMM_ADM/L/B6 * Latitude Start: -20.600000 * Longitude Start: 62.470000 * Latitude End: -20.100000 * Longitude End: 57.410000 * Date/Time Start: 1761-07-27T00:00:00 * Date/Time End: 1761-08-08T00:00:00 * Campaign: * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Baleine (5th Rate Frigate), Voyage: Diego Ray - Mauritius, 1st Observer: Philip Affleck (Captain), 2nd Observer: Richard Douglas (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 32G 702BM

Parameter(s):

#	Name	Short Name	Unit	Comment
1	DATE/TIME	Date/Time		Geocode
2	LATITUDE	Latitude		Geocode
3	LONGITUDE	Longitude		Geocode
4	Wind direction	dd	deg	Wind 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.
5	Wind speed	ff	m/s	calculated from the descriptive terms of wind force given in the observations
6	Landmark	Landmark		Name of first landmark
7	Bearing	Bearing		Bearing of the first landmark
8	Distance to landmark	Distance	arbitrary units	Distance to the first landmark
9	Course	Course		Course of the ship during the past 24 hours
10	Distance	Distance	arbitrary units	Distance travelled during the previous 24 hours
11	Declination	Decl	deg	It 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	Compass, established error	Compass established e
13	Wind direction description	Wind dir descr		All reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
14	Wind force description	Wind force descr		All reported wind forces on this day
15	Precipitation description	Precip descr
16	State of the sea description	State sea descr
17	Clearness	Clearness
18	Gusts	Gusts		1 If wind gusts are reported
19	Precipitation/Rain	Rain		1 If rain was reported
20	Fog	Fog		1 If fog was reported
21	Snow type	Snow		1 If snow was reported
22	Thunder	Thunder		1 If thunder and or lightning was reported
23	Hail	Hail		1 If hail was reported
24	Sea ice	Sea ice		1 If sea-ice or icebergs were reported
25	Identification	ID		CLIWOC 2.1 line number

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

255 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Date/Time	2 Latitude	3 Longitude	4 dd [deg] (Wind direction (from which th...)	5 ff [m/s] (calculated from the descripti...)	6 Landmark (Name of first landmark)	7 Bearing (Bearing of the first landmark)	8 Distance [arbitrary units] (Distance to the first landmark)	9 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 Compass established e	13 Wind dir descr (All reported wind directions ...)	14 Wind force descr (All reported wind forces on t...)	15 Precip descr	16 State sea descr	17 Clearness	19 Rain (1 If rain was reported)	25 ID (CLIWOC 2.1 line number)
1761-07-27T08:00	-20.60	62.47	145		DIEGO RAYS	N42E	24	S62W	72.00	-13	VAR. AZ. 11:19W	SEBS, SSE	FIRST PART FRESH GALES, MIDDLE AND LATTER SQUALLY	MIDDLE AND LATTER RAIN		FIRST PART CLOUDY	1	24089
1761-07-28T08:00	-20.38	61.88	362	6.7	DIEGO RAYS	N37E	24	N23W	14.00	-13	VAR. AZ. 12:29W	VARIABLE	FIRST PART SQUALLY, MIDDLE AND LATTER PARTS MODERATE			CLOUDY	0	24090
1761-07-29T08:00	-20.15	62.30	145	1.0	DIEGO RAYS	N65E	23	NBW3/4W	15.00	-13	VAR. AZ. 12:29W	SSW, SSE	LIGHT AIRS			CLOUDY	0	24091
1761-07-30T08:00	-20.38	62.48	362	0.0	DIEGO RAYS	N50E	52	S36E	17.00	-13	VAR. AZ. 11:19W	VARIABLE	FIRST AND LATTER PARTS CALM, MIDDLE FRESH BREEZES	MIDDLE RAIN		MIDDLE CLOUDY	1	24092
1761-07-31T08:00	-20.48	61.62	362	6.7	DIEGO RAYS	N64E	37	S83W	49.00	-13	VAR. AMP. 12:20W	VARIABLE	FIRST PART LIGHT AIRS, MIDDLE AND LATTER MODERATE	FIRST PART RAIN		FIRST PART HAZY, MIDDLE AND LATTER CLOUDY	1	24093
1761-08-01T08:00	-20.68	60.40	156		DIEGO RAIS	N70E	37	S30W	69.00	-13		SBW, S, SBE	FIRST AND MIDDLE PARTS FRESH GALES, MIDDLE AND LATTER SQUALLY		LARGE SWELL FROM S	FIRST AND MIDDLE CLOUDY	0	24094
1761-08-02T08:00	-20.43	60.17	362	19.0	DIEGO RAIS	N76E	60	N42W	21.00	-13		VARIABLE	FIRST AND LATTER PARTS FRESH GALES, MIDDLE LITTLE WINDS		MIDDLE LARGE SWELL FROM SE	FIRST PART FAIR, MIDDLE CLOUDY, LATTER HAZY	0	24095
1761-08-03T08:00	-20.33	59.14	122	19.0	THE ROCK OVER THE SE HARBOUR	N83W	63	N36E	78.00	-13		SBE, SSE, SE	FRESH GALES			CLOUDY	0	24096
1761-08-04T08:00	-20.87	58.93	100	19.0	MAURITIUS	N57W	26	SSW	32.00	-13		SE, SEBE, ESE	FRESH GALES AND SQUALLY	RAIN			1	24097
1761-08-05T08:00	-20.13	58.94	100	6.7	MAURITIUS	S33W	22	N1E	44.00	-13		SEBE, ESE	FRESH GALES. AT NOON MODERATE			CLOUDY. AT NOON FAIR	0	24098
1761-08-06T08:00	-20.43	59.39	111	6.7	MAURITIUS	N30E	31	S54E	31.00	-13		SE, SEBE	MODERATE	SOME RAIN		CLOUDY	1	24099
1761-08-07T08:00	-20.50	57.78	133	6.7	MAURITIUS	N33E	7	S87W	91.00	-13		SEBE, SE, SEBS	FIRST PART FRESH GALES, MIDDLE AND LATTER MODERATE			MIDDLE AND LATTER CLOUDY	0	24100
1761-08-08T08:00	-20.50	56.49	119	19.0	THE PEECKS OVER THE SE HARBOUR	NWBW	15			-16		SBW, S, SSE, SEBS, SE	FIRST AND MIDDLE PARTS STRONG GALES AND SQUALLY, LATTER FRESH GALES	FIRST AND MIDDLE RAIN		LATTER CLOUDY	1	24101