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: -24.510000 * Median Longitude: 7.889375 * South-bound Latitude: -32.970000 * West-bound Longitude: -3.890000 * North-bound Latitude: -15.830000 * East-bound Longitude: 17.200000

Date/Time Start: 1784-04-13T11:00:00 * Date/Time End: 1784-04-28T12:00:00

Event(s):

Monmouth_17840413_NMM_ADM/L/M158 * Latitude Start: -34.430000 * Longitude Start: 16.950000 * Latitude End: -15.890000 * Longitude End: -5.750000 * Date/Time Start: 1784-04-13T00:00:00 * Date/Time End: 1784-04-28T00:00:00 * Campaign: * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Monmouth (3rd Rate Frigate), Voyage: Table Bay - St Helena, 1st Observer: J. Alms (Captain), 2nd Observer: Andrew Sproule (2nd Officer/Lieutenant), Company: Royal Navy, Other ship information: 64G 1369BM

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	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	State of the sea description	State sea 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:

309 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 Wind dir descr (All reported wind directions ...)	13 Wind force descr (All reported wind forces on t...)	14 State sea descr	15 Clearness	23 ID (CLIWOC 2.1 line number)
1784-04-13T11:00	-32.97	17.20	182	6.7	TABLE LAND	S55E	37	N55W	113.00	-21	VARIABLE, SSW	MODERATE	WESTERLY SWELL		170173
1784-04-14T11:00	-32.03	16.00	237	6.7	TABLE LAND	N51W	93	N53W	77.00	-22	ES, WBS	MODERATE	WESTERLY SWELL		170174
1784-04-15T11:00	-30.50	14.23	226	6.7	TABLE LAND	S54E	93	N49W	86.00	-22	W, VARIABLE, WSW	MODERATE	WESTERLY SWELL		170175
1784-04-16T11:00	-29.25	12.73	124	6.7	TABLE LAND	S53E	131	N53W	110.00	-22	SWBS, SEBS	MODERATE	SWELL	CLEAR	170176
1784-04-17T11:00	-28.17	11.11	150	9.3	TABLE LAND	S51E	174	N52W	108.00	-19	SEBS, SBE	FRESH BREEZES		CLOUDY	170177
1784-04-18T11:00	-27.30	10.05	362	2.6	TABLE LAND	S51E	197	N52W	70.00	-20	SEBS, VARIABLE	LIGHT BREEZES	WESTERLY SWELL		170178
1784-04-19T11:00	-26.70	9.53	361	0.0	TABLE LAND	S49E	207	N42W	30.00	-20	WSW, CALM	FIRST PART LIGHT AIRS, MIDDLE AND LATTER CALM		MIDDLE AND LATTER CLOUDY	170179
1784-04-20T11:00	-25.78	9.11	362	6.7	TABLE LAND	S46E	230	N49W	60.00	-20	VARIABLE	FIRST AND MIDDLE PARTS LIGHT AIRS, LATTER MODERATE		LATTER CLOUDY	170180
1784-04-21T11:00	-24.67	8.56	362	2.6	TABLE LAND	S42E	245	N24W	72.00	-20	VARIABLE	LIGHT BREEZES		CLEAR	170181
1784-04-22T11:00	-23.77	7.95	138	2.6	TABLE LAND	N59W	313	N40W	65.00	-20	WSW, S, SSE	LIGHT BREEZES	WESTERLY SWELL	CLEAR	170182
1784-04-23T12:00	-22.33	6.70	140	6.7	TABLE LAND	N62W	269	N40W	109.00	-18	SEBS, SSE	MODERATE BREEZES	HEAVY W SWELL	CLEAR	170183
1784-04-24T12:00	-20.60	4.88	140	6.7	TABLE LAND	N66W	223	N40W	130.00	-18	SSE	MODERATE BREEZES	HEAVY W SWELL	CLEAR	170184
1784-04-25T12:00	-18.88	2.83	128	6.7	TABLE LAND	N71W	174	N52W	148.00	-18	SEBS	MODERATE BREEZES	SWELL ABATED	CLEAR	170185
1784-04-26T12:00	-17.40	0.91	118	9.3	TABLE LAND	N78W	134	N51W	142.00	-17	SE	FRESH BREEZES		CLEAR	170186
1784-04-27T12:00	-15.98	-1.67	129	6.7	TABLE LAND	W	84	N54W	139.00	-17	SEBS	MODERATE		CLOUDY	170187
1784-04-28T12:00	-15.83	-3.89	144	6.7	TABLE LAND	S83W	38	W1/4N	133.00	-14	SSE	MODERATE		CLOUDY	170188