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:

Latitude: -20.170000 * Longitude: 57.500000

Date/Time Start: 1769-02-20T00:00:00 * Date/Time End: 1769-02-23T08:00:00

Event(s):

La_Perle_17690220_COTE_4/JJ/23 * Date/Time Start: 1769-02-20T00:00:00 * Date/Time End: 1769-02-23T00:00:00 * Campaign: * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: La Perle, Voyage from: Coastal, 1st Observer: De La Biochaye (Capitan)

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	-	-		1 If position is considered to be coastal (in port or near coastal disturbances)
7	Comment	Comment		Other remarks, that were not possible to put in the other remark fields
8	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.
9	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.
10	Wind force description	Wind force descr		All reported wind forces on this day
11	State of the sea description	State sea descr
12	Gusts	Gusts		1 If wind gusts are reported
13	Precipitation/Rain	Rain		1 If rain was reported
14	Fog	Fog		1 If fog was reported
15	Snow type	Snow		1 If snow was reported
16	Thunder	Thunder		1 If thunder and or lightning was reported
17	Hail	Hail		1 If hail was reported
18	Sea ice	Sea ice		1 If sea-ice or icebergs were reported
19	Identification	ID		CLIWOC 2.1 line number

License:

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

Size:

53 data points

Data

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

1 Date/Time	2 Latitude	3 Longitude	4 dd [deg]	5 ff [m/s]	6 -	7 Comment	8 Decl [deg]	9 Wind dir descr	10 Wind force descr	11 State sea descr	19 ID
1769-02-20T00:00			45	9.3				AU NE	BEAU FRAIS	BELLE	139226
1769-02-21T00:00			45	9.3				AU NE	BEAU FRAIS	BELLE	139227
1769-02-22T00:00			45	9.3				AU NE	BEAU FRAIS	BELLE	139228
1769-02-23T08:00	-20.17	57.50	55		1	A 9 HS MOUILLÉ AU PORT LOUIS	-13	DU NE AU ENE		BELLE	139229