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: 14.826667 * Median Longitude: -61.355000 * South-bound Latitude: 14.590000 * West-bound Longitude: -62.100000 * North-bound Latitude: 15.300000 * East-bound Longitude: -61.070000

Date/Time Start: 1780-10-08T16:00:00 * Date/Time End: 1780-10-16T00:00:00

Event(s):

Ajax_17801008_NMM_ADM/L/A56 * Latitude: 14.590000 * Longitude: -61.070000 * Date/Time Start: 1780-10-08T00:00:00 * Date/Time End: 1780-10-16T00:00:00 * Campaign: * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ajax, 1st Observer: C.D. Pater (Lt), Company: Royal Navy, Other ship information: 74G 1613BM

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	-	-		1 If position is considered to be coastal (in port or near coastal disturbances)
10	Comment	Comment		Any remark found in the logbook on this day about the cargo
11	Comment	Comment		Any remark, found in the logbook on this particular day, about the ship, sails, rigging, etc.
12	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.
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	Present weather	ww		Weather description
16	Precipitation description	Precip descr
17	State of the sea description	State sea descr
18	Clearness	Clearness
19	Gusts	Gusts		1 If wind gusts are reported
20	Precipitation/Rain	Rain		1 If rain was reported
21	Fog	Fog		1 If fog was reported
22	Snow type	Snow		1 If snow was reported
23	Thunder	Thunder		1 If thunder and or lightning was reported
24	Hail	Hail		1 If hail was reported
25	Sea ice	Sea ice		1 If sea-ice or icebergs were reported
26	Identification	ID		CLIWOC 2.1 line number

License:

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

Size:

138 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 - (1 If position is considered t...)	10 Comment (Any remark found in the logbo...)	11 Comment (Any remark, found in the logb...)	12 Decl [deg] (It is generally accepted by t...)	13 Wind dir descr (All reported wind directions ...)	14 Wind force descr (All reported wind forces on t...)	15 ww (Weather description)	16 Precip descr	17 State sea descr	18 Clearness	20 Rain (1 If rain was reported)	23 Thunder (1 If thunder and or lightning...)	26 ID (CLIWOC 2.1 line number)
1780-10-08T16:00	14.59	-61.07	105	1.0				1			4	EBS	LIGHT AIRS		HEAVY RAINS			1	0	5032
1780-10-09T16:00	14.59	-61.07	362	9.3				1			4	VARIABLE	FRESH BREEZES		RAIN		HAZY	1	0	5033
1780-10-10T16:00	14.59	-61.07	362	9.3				1			4	VARIABLE	FRESH BREEZES		RAIN		HAZY	1	0	5034
1780-10-11T16:00	14.59	-61.07	128	26.8				1		STRUCK TOPGALLANT MASTS, PARTED THE SMALL BOWER CABLE, LET GO THE BEST BOWER. WHEN SHE STRUCK HOVE A HEAD BY THE STREAM CABLE BUT THE BESTBOWER & STREAM CABLES STOOD OUT TO SEA. AT 11 SPLIT THE MAIN SAIL AND MIZEN	4	NNE, NBE, E, SEBE	SQUALLY, AT 6 HARD GALES WITH HEAVY SQUALLS		RAIN	AT 6 THE SEA RUNNING VERY HIGH		1	0	5035
1780-10-12T00:00			362							AT 6 BLEW AWAY THE MAIN TOPMAST 6 FEET ABOVE THE CAP, AND WITH IT THE YARD, AND CARRIED WITH IT PART OF THE TOP AND MAIN YARDS IN THE SLINGS. THE MIZEN MAST AND YARD BLOWD AWAY 9 FEET ABOVE THE DECK. CONSTANTLY EMPLOYED PUMPING THE SHIP		ALL ROUND THE COMPASS	STRONG GALES AND HEAVY SQUALLS. AT 6 VIOLENT SQUALLS OF WIND. AT NOON LESS WIND	LIGHTNING		SEA VERY HIGH AND CONFUSED. AM VERY HEAVY SEA		0	1	5036
1780-10-13T00:00			68	6.7						EMPLOYED CAPPING THE STUMP OF THE MIZEN MAST AND MAIN TOPMAST. 1 HAND PUMP CONSTANTLY EMPLOYED		WSW-ENE	SQUALLY. AT 5 MORE MODERATE			HEAVY SEA		0	0	5037
1780-10-14T16:00	15.30	-61.75	362	19.0	THE SAINTS	EBN	6			GOT A SPARE TOPSAIL YARD ACROSS FOR A JURY MAIN YARD	4	VARIABLE	FRESH GALES					0	0	5038
1780-10-15T16:00	15.30	-62.10		6.7	DOMINICA	EBN	11		FOUND IN THE SPIRIT ROOM AND COAL ROOM A PIPE OF WINE AND 3 PUNCHEONS OF RUM STORE IN THE HURRICANE.	BY THE SHIPS LABOURING KEEPS ONE HAND PUMP GOING.	4		MODERATE BREEZES					0	0	5039
1780-10-16T00:00			362	9.3								VARIABLE	FRESH BREEZES				CLEAR	0	0	5040