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García-Herrera, Ricardo; Können, Gunther P; Wheeler, Dennis A; Prieto, Maria del Rosario; Jones, Philip D; Koek, Frits B (2010): Meteorological observations during SWALLOW cruise from Table Bay to Tillicherry started at 1775-10-25 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752401, In: Jones, Philip D; Wheeler, Dennis A; Können, Gunther P; Koek, Frits B; Prieto, Maria del Rosario; García-Herrera, Ricardo (2007): Climatological observations from ship logbooks between 1750 and 1854 (release 2.1) [dataset publication series]. PANGAEA, https://doi.org/10.1594/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
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00090: Climatological Database for the Worlds Oceans: 1750-1854
Coverage:
Median Latitude: -21.902000 * Median Longitude: 72.736800 * South-bound Latitude: -38.630000 * West-bound Longitude: 19.340000 * North-bound Latitude: 7.270000 * East-bound Longitude: 90.050000
Date/Time Start: 1775-10-25T11:00:00 * Date/Time End: 1775-12-13T07:00:00
Event(s):
Swallow_17751025_NMM_ADM/L/S223 * Latitude Start: -34.430000 * Longitude Start: 16.950000 * Latitude End: 12.400000 * Longitude End: 74.900000 * Date/Time Start: 1775-10-25T00:00:00 * Date/Time End: 1775-12-13T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Swallow (Sloop), Voyage: Table Bay - Tillicherry, 1st Observer: James Pigott (Captain), 2nd Observer: Henry Ball (1st Officer/Master), Company: Royal Navy, Other ship information: 302BM
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DATE/TIMEDate/TimeGeocode
LATITUDELatitudeGeocode
LONGITUDELongitudeGeocode
Wind directiondddegWind 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.
Wind speedffm/scalculated from the descriptive terms of wind force given in the observations
LandmarkLandmarkName of first landmark
BearingBearingBearing of the first landmark
Distance to landmarkDistancearbitrary unitsDistance to the first landmark
--1 If position is considered to be coastal (in port or near coastal disturbances)
10 CourseCourseCourse of the ship during the past 24 hours
11 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
12 DeclinationDecldegIt 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 descriptionWind dir descrAll reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
14 Wind force descriptionWind force descrAll reported wind forces on this day
15 Present weatherwwWeather description
16 Precipitation descriptionPrecip descr
17 State of the sea descriptionState sea descr
18 Cloud typeCloud type
19 ClearnessClearness
20 GustsGusts1 If wind gusts are reported
21 Precipitation/RainRain1 If rain was reported
22 FogFog1 If fog was reported
23 Snow typeSnow1 If snow was reported
24 ThunderThunder1 If thunder and or lightning was reported
25 HailHail1 If hail was reported
26 Sea iceSea ice1 If sea-ice or icebergs were reported
27 CommentComment
28 IdentificationIDCLIWOC 2.1 line number
Size:
974 data points

Data

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


Date/Time

Latitude

Longitude

dd [deg]
(Wind direction (from which th...)

ff [m/s]
(calculated from the descripti...)

Landmark
(Name of first landmark)

Bearing
(Bearing of the first landmark)

Distance [arbitrary units]
(Distance to the first landmark)

-
(1 If position is considered t...)
10 
Course
(Course of the ship during the...)
11 
Distance [arbitrary units]
(Distance travelled during the...)
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 
Cloud type
19 
Clearness
20 
Gusts
(1 If wind gusts are reported)
21 
Rain
(1 If rain was reported)
22 
Fog
(1 If fog was reported)
23 
Snow
(1 If snow was reported)
24 
Thunder
(1 If thunder and or lightning...)
25 
Hail
(1 If hail was reported)
26 
Sea ice
(1 If sea-ice or icebergs were...)
27 
Comment
28 
ID
(CLIWOC 2.1 line number)
1775-10-25T11:00-34.7019.3432722.6CAPE OF GOOD HOPEN51:00W19S51E51.00-22NWBN, NBWSTRONG GALES AND HARD SQUALLS0000000247468
1775-10-26T10:00-36.5723.1924622.6CAPE OF GOOD HOPEN56:10W90S75E272.00-24WNW, WBS, WSTRONG GALES AND HARD SQUALLS0000000247469
1775-10-27T10:00-36.5026.4920122.6CAPE OF GOOD HOPEN72:10W138S87E150.00-24W, SWSTRONG GALES AND HARD SQUALLSHEAVY SEA FROM THE W0000000247470
1775-10-28T10:00-36.8728.591896.7CAPE OF GOOD HOPEN72:00W174S67E111.00-25SW, SWBSFIRST STRONG GALES, LATTER MORE MODERATESEA IS GREATLY FALLEN0000000247471
1775-10-29T10:00-37.8231.263136.7CAPE OF GOOD HOPEN71:10W219S66E138.00-25WSW, NNE, NNWMODERATE BREEZESCLOUDY0000000247472
1775-10-30T10:00-37.6733.111996.7CAPE OF GOOD HOPEN72:15W246N84E90.00-26NW, SSE, SWMODERATE BREEZES WITH FREQUENT SQUALLSSEA GREATLY CONFUSED0000000247473
1775-10-31T10:00-38.0335.17196.7CAPE OF GOOD HOPEN73:15W280S71E99.00-26SWBS, W, NEMODERATEWESTERN SWELLCLOUDY0000000a trivial correction was made in this observation247474
1775-11-01T09:00-38.3838.9126619.0CAPE OF GOOD HOPEN71:16E337S79:00E179.00-27NE, WNWFRESH GALESGREAT SWELLCLOUDY0000000a trivial correction was made in this observation247475
1775-11-02T09:00-38.4843.022879.3CAPE OF GOOD HOPEN76:11W403S87:10E200.00-28WBN, WSW, NWFRESH BREEZES AND SQUALLY0000000247476
1775-11-03T09:00-38.6346.492659.3CAPE OF GOOD HOPEN79:00E472S88:00E226.00-28NW, WNWFRESH BREEZES AND SQUALLY0000000247477
1775-11-04T09:00-38.0051.4925419.0CAPE OF GOOD HOPEN82:00E547S81:00E220.00-27W, WBNFRESH GALES WITH FREQUENT HARD SQUALLSGREAT SEA FROM W0000000247478
1775-11-05T08:00-38.1355.492889.3CAPE OF GOOD HOPES83:10E220.00-27WBN, NWFRESH BREEZES AND SQUALLYSWELL0000000247479
1775-11-06T08:00-38.2760.063576.7ST PAULSN87:40E238S86:15E151.00-26NWBN, NNEMODERATE BREEZESW SWELLFAIR0000000247480
1775-11-07T08:00-38.0364.522019.3ST PAULSN47:54E190N86:00E203.00-24NNE, W, SWFRESH BREEZES AND HARD SQUALLSCLOUDY0000000247481
1775-11-08T07:00-37.9368.321809.3ST PAULSN88:44E110S88:00E203.00-23NW, SW, SSWFRESH BREEZES AND FREQUENT SQUALLSHARD SHOWERS OF RAIN1100000247482
1775-11-09T07:00-37.6770.492586.7ST PAULSS87:00E68S86:00E134.00-23WNW, WBNMODERATE BREEZESFAIR0000000247483
1775-11-10T07:00-37.9273.763046.7ST PAULSN87:00E24S85:00E165.00-22SSW, WSW, NWBNMODERATE BREEZESHAZY0000000247484
1775-11-11T07:00-37.3578.423236.7ST PAULSS54W17N80:12E N49E199.00-15NBW, NNWMODERATE BREEZESHAZY0000000247485
1775-11-12T07:00-34.7580.843239.3ST PAULSS41:14W81N37E202.00-15NNWFRESH BREEZESHEAVY DEWSHAZY0000000247486
1775-11-13T07:00-33.5781.953341.0ST PAULSS39:27W113N38E89.00-15NNW, NWBN, NBWLIGHT AIRSPLEASANT0000000247487
1775-11-14T06:00-33.2384.02202.6ST PAULSN46W140N76E104.00-14NNE, NBE, NEBNLIGHT BREEZESSMOOTH WATERCLEAR0000000247488
1775-11-15T06:00-32.4785.753446.7ST PAULSS50:10W174N26E100.00-10NBE, N, N1/2WMODERATESMOOTH WATERFAIR0000000247489
1775-11-16T06:00-31.7787.4512.6ST PAULSS51:27W206N62E100.00-10N, NBW, NBELIGHT BREEZESSW SWELLFAIR0000000247490
1775-11-17T06:00-31.5287.9516.7ST PAULSS54:10W216N64E33.00-10N, NBW, NBEMODERATEFAIR0000000247491
1775-11-18T06:00-31.0787.953621.0ST PAULSS52W220N14W23.00-10EBN, VARIABLELIGHT AIRS0000000247492
1775-11-19T06:00-30.2587.80691.0ST PAULSS48:52W231N55.00-10NE, EBNLIGHT AIRSW SWELL0000000247493
1775-11-20T06:00-28.0787.6569ST PAULSS41:21W260N5W131.00-10ENE, EBNSMALL RAINDARK CLOUDY0100000a trivial correction was made in this observation247494
1775-11-21T06:00-26.9086.623626.7ST PAULSS34:28W278N25W110.00-7EBN, VARIABLEMODERATECLOUDY0000000247495
1775-11-22T06:00-25.5785.82276.7ST PAULSS31:10W286N40W64.00-7NE, NEBNMODERATENE SWELLFAIR0000000247496
1775-11-23T06:00-23.3886.501516.7ST PAULSS29W331N1W181.00-7NNW, WSW, SSEMODERATERAINCLOUDY0100000247497
1775-11-24T06:00-21.6586.82866.7ST PAULSS27:19E364N11W106.00-4EMODERATESW SWELLFAIR0000000247498
1775-11-25T06:00-19.4287.52861.0ST PAULSS29:22W422N1E139.00-4ELIGHT AIRSFAIR0000000247499
1775-11-26T06:00-16.5788.35886.7ST PAULSS25:10W470N17E179.00-2EBS, ESE, EMODERATECLOUDY0000000247500
1775-11-27T06:00-13.6389.251116.7ST PAULSS24W528N10E182.00-2EBS, ESEMODERATEE SWELLFAIR, LATTER CLOUDY0000000247501
1775-11-28T06:00-10.7289.253596.7FRYERS HOODN17:54W373N9E175.00-1EBS, NMODERATEFAIR0000000247502
1775-11-29T06:00-8.0089.87896.7FRYERS HOODN23W325N6E164.00-1EBS, EMODERATEFAIR0000000247503
1775-11-30T06:00-5.7089.891132.6FRYERS HOODN26W286N8E139.000EBS, ESELIGHT WINDSSMOOTH WATERFAIR0000000247504
1775-12-01T06:00-3.4090.051586.7FRYERS HOODN33E248N10W140.000SEBE, SSEMODERATE BREEZESPLEASANT0000000a trivial correction was made in this observation247505
1775-12-02T06:00-1.8090.031592.6FRYERS HOODN39:49W229N4E98.001SEBE, SSELIGHT WINDSFAIR0000000a trivial correction was made in this observation247506
1775-12-03T06:00-0.7589.901591.0FRYERS HOODN42W214N7E64.001SEBE, SSELIGHT AIRSHAZY, MID AN DLATTER VERY CLOUDY0000000a trivial correction was made in this observation247507
1775-12-04T06:000.3889.74159FRYERS HOODN48W197N3E73.001SEBE, SSELIGHT AIRS, FREQUENT APPERANCE OF HARD SQUALLSVERY CLOUDY0000000a trivial correction was made in this observation247508
1775-12-05T06:001.5289.373621.0FRYERS HOODN52W182N4W58.001E, NE, ENE, NEBE, VARIABLELIGHT AIRSHARD RAINSTRONG RIPPLING ON THE SURFACEDARK CLOUDY0100000a trivial correction was made in this observation247509
1775-12-06T06:002.0789.14362FRYERS HOODN55W177N2E34.001NBE, N, VARIABLEFIRST LIGHT AIRS, INCLINABLE TO CALM, CONTINUAL SQUALLSCONTINUAL RAINMID AND LATTER DARK CLOUDY0100000a trivial correction was made in this observation247510
1775-12-07T06:003.4088.83271FRYERS HOODN62:41W149N2E78.001E, WAPEARANCE OF RAINDARK CLOUDY0100000a trivial correction was made in this observation247511
1775-12-08T06:005.3787.783621.0FRYERS HOODN14W130N23W128.001SW, WBS, VARIABLELATTER LIGHT AIRSRAINSURFACE OF THE WATER MUCH AGITATED OWING TO THE DIFFERENT SETS OF CURRENTSFIRST AND MID CLOUDY, LATTER CLEAR0100000a trivial correction was made in this observation247512
1775-12-09T06:005.9886.923611.0FRYERS HOODN78:17W116N34W44.001SWBW, CALMLIGHT AIRSS SWELLCLOUDY0000000a trivial correction was made in this observation247513
1775-12-10T06:006.6386.263392.6FRYERS HOODN83:10W103N39W48.001N, NNWLIGHT WINDSRAINCLOUDY0100000a trivial correction was made in this observation247514
1775-12-11T06:007.2584.50102FRYERS HOODW75N68W96.001NE, ENE, EBSLIGHT AIRS, FREQUENT SQUALLSRAINCLOUDY0100000a trivial correction was made in this observation247515
1775-12-12T06:007.2783.15912.6FRYERS HOODW38W130.001EBS, ENE, ELIGHT BREEZESHAZY0000000a trivial correction was made in this observation247516
1775-12-13T07:006.1781.803622.6THE ELEPHANTN1/2E210ENE, NE, NW, VARIABLELIGHT BREEZESRAINHAZY0100000a trivial correction was made in this observation247517