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: 9.594118 * Median Longitude: -24.583137 * South-bound Latitude: -23.500000 * West-bound Longitude: -43.160000 * North-bound Latitude: 47.750000 * East-bound Longitude: -7.560000

Date/Time Start: 1819-12-29T13:00:00 * Date/Time End: 1820-02-22T15:00:00

Event(s):

Van_der_Werff_18191229_MAR_D23905_4898 * Latitude Start: 47.750000 * Longitude Start: -7.560000 * Latitude End: -23.370000 * Longitude End: -43.120000 * Date/Time Start: 1819-12-29T00:00:00 * Date/Time End: 1820-02-22T00:00:00 * Campaign: * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Van Der Werff (Fregat), Voyage: Goede Rheede - Rio De Janeiro, 1st Observer: Gerardus Oosthuis (Kapitein), Company: MAR

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	Pressure, atmospheric	PPPP	hPa	No temperature correction was applied. The following factors have been used for the conversion to hPa: 2.54 cm in an inch; 13.596 specific gravity of mercury; 980.65 cm/s gravity at 45° latitude
7	Image number/name	Image no/name		Identification Number of the original image
8	Landmark	Landmark		Name of first landmark
9	Bearing	Bearing		Bearing of the first landmark
10	Distance to landmark	Distance	arbitrary units	Distance to the first landmark
11	Landmark	Landmark		Name of second landmark
12	Bearing	Bearing		Bearing of the second landmark
13	Distance to landmark	Distance	arbitrary units	Distance to the second landmark
14	-	-		1 If position is considered to be coastal (in port or near coastal disturbances)
15	Watch	Watch		Name of the period of 4 hours which is known as a watch or duty on board ships
16	Glasses	Glasses		Number of glasses within a watch; one watch equals 8 glasses
17	Comment	Comment		Life on board
18	Course	Course		Course of the ship during the past 24 hours
19	Distance	Distance	arbitrary units	Distance travelled during the previous 24 hours
20	Comment	Comment		Any remark, found in the logbook on this particular day, about any biological item
21	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.
22	Sensor reading	Reading	arbitrary units	Reading of the air pressure
23	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.
24	Current direction description	Cur dir descr		Direction of the current. This direction points to where the current is flowing towards to.
25	Wind force description	Wind force descr		All reported wind forces on this day
26	Present weather	ww		Weather description
27	Precipitation description	Precip descr
28	State of the sea description	State sea descr
29	Cloud type	Cloud type
30	Clearness	Clearness
31	Gusts	Gusts		1 If wind gusts are reported
32	Precipitation/Rain	Rain		1 If rain was reported
33	Fog	Fog		1 If fog was reported
34	Snow type	Snow		1 If snow was reported
35	Thunder	Thunder		1 If thunder and or lightning was reported
36	Hail	Hail		1 If hail was reported
37	Sea ice	Sea ice		1 If sea-ice or icebergs were reported
38	Identification	ID		CLIWOC 2.1 line number

License:

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

Size:

1222 data points

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