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: 12.929091 * Median Longitude: 110.110000 * South-bound Latitude: 4.880000 * West-bound Longitude: 107.500000 * North-bound Latitude: 20.500000 * East-bound Longitude: 113.900000

Date/Time Start: 1770-08-25T05:00:00 * Date/Time End: 1770-09-04T05:00:00

Event(s):

Valentine_17700825_BL_L/MAR/B/452D * Latitude Start: 12.100000 * Longitude Start: 80.500000 * Latitude End: 20.500000 * Longitude End: 107.500000 * Date/Time Start: 1770-08-25T00:00:00 * Date/Time End: 1770-09-04T00:00:00 * Campaign: * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Valentine, Voyage: Madras - Wampoe, 1st Observer: Charles Purvis (Captain), Company: EIC

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	Landmark	Landmark		Name of first landmark
6	Bearing	Bearing		Bearing of the first landmark
7	Distance to landmark	Distance	arbitrary units	Distance to the first landmark
8	Course	Course		Course of the ship during the past 24 hours
9	Distance	Distance	arbitrary units	Distance travelled during the previous 24 hours
10	Comment	Comment		Other remarks, that were not possible to put in the other remark fields
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	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.
13	Wind force description	Wind force descr		All reported wind forces on this day
14	Precipitation description	Precip descr
15	Clearness	Clearness
16	Gusts	Gusts		1 If wind gusts are reported
17	Precipitation/Rain	Rain		1 If rain was reported
18	Fog	Fog		1 If fog was reported
19	Snow type	Snow		1 If snow was reported
20	Thunder	Thunder		1 If thunder and or lightning was reported
21	Hail	Hail		1 If hail was reported
22	Sea ice	Sea ice		1 If sea-ice or icebergs were reported
23	Identification	ID		CLIWOC 2.1 line number

License:

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

Size:

188 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 Landmark (Name of first landmark)	6 Bearing (Bearing of the first landmark)	7 Distance [arbitrary units] (Distance to the first landmark)	8 Course (Course of the ship during the...)	9 Distance [arbitrary units] (Distance travelled during the...)	10 Comment (Other remarks, that were not ...)	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 Clearness	17 Rain (1 If rain was reported)	23 ID (CLIWOC 2.1 line number)
1770-08-25T05:00	4.88	109.50	202				NNE1/2E	163.00	MERIDIAN WAS PULO AUR	-1	SBE, SSW			CLOUDY	0	263354
1770-08-26T05:00	7.07	109.93	179				NBE	136.00	MERIDIAN WAS PULO AUR	-1	SBW, SW, S		LATTER RAIN	FAIR	1	263355
1770-08-27T05:00	8.47	110.05	214				E86N	104.00	MERIDIAN WAS PULO AUR	-1	SWBW, SWBS			CLOUDY	0	263356
1770-08-28T05:00	9.57	109.91	225	PULO CONDORE	WBN	6	N60E	109.00	MERIDIAN WAS PULO AUR	-1	WSW, SW	VARIABLE AND SQUALLY		CLOUDY	0	263357
1770-08-29T05:00	11.03	109.70	248	PULO SAPATA	S48W	37	N48E	109.00	MERIDIAN WAS PULO AUR	-1	WSW			CLOUDY	0	263358
1770-08-30T05:00	12.80	111.11	270	PULO SAPATA	S43W	81	N38E	135.00	MERIDIAN WAS PULO AUR	0	W	VARIABLE AND SQUALLY		CLOUDY	0	263359
1770-08-31T05:00	14.73	112.43	270	PULO SAPATA	S44W	116	NEBN	139.00	MERIDIAN WAS PULO AUR	0	W	VARIABLE AND SQUALLY	DRIZZLING RAIN		1	263360
1770-09-01T04:00	16.02	113.90	270	PULO SAPATA	S39W	155	NNE	131.00		0	SSW, W			FIRST PART HAZY, MIDDLE AND LATTER FAIR	0	263361
1770-09-02T05:00	17.83	109.50	224	PULO SAPATA	S34W	151	N15E	125.00		-1	SSW, S, SW			CLOUDY	0	263362
1770-09-03T05:00	19.32	107.68	179	PULO SAPATA	S18W	198	NNW	103.00		-1	S			FAIR	0	263363
1770-09-04T05:00	20.50	107.50	235	PULO SAPATA	SW		N25W	115.00		-1	SWBW			FAIR	0	263364