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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 NISUS cruise from Port Louis to Madras started at 1811-04-05 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.750947, 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: -2.704516 * Median Longitude: 64.745161 * South-bound Latitude: -18.050000 * West-bound Longitude: 56.150000 * North-bound Latitude: 10.100000 * East-bound Longitude: 82.270000
Date/Time Start: 1811-04-05T08:00:00 * Date/Time End: 1811-05-13T07:00:00
Event(s):
Nisus_18110405_NMM_RUSI/NM/180/10 * Latitude Start: -18.050000 * Longitude Start: 57.370000 * Latitude End: 12.100000 * Longitude End: 80.500000 * Date/Time Start: 1811-04-05T00:00:00 * Date/Time End: 1811-05-13T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Nisus (5th Rate Frigate), Voyage: Port Louis, Mauritius - Madras, 1st Observer: Philip Beaver (Captain), Company: Royal Navy, Other ship information: 38G 1071BM
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
Pressure, atmosphericPPPPhPaNo 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
Temperature, airTTT°C
LandmarkLandmarkName of first landmark
BearingBearingBearing of the first landmark
10 Distance to landmarkDistancearbitrary unitsDistance to the first landmark
11 CourseCourseCourse of the ship during the past 24 hours
12 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
13 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.
14 Sensor readingReadingarbitrary unitsReading of the (outside) air thermometer
15 Sensor readingReadingarbitrary unitsReading of the air pressure
16 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.
17 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
18 Current speed descriptionV descr
19 Wind force descriptionWind force descrAll reported wind forces on this day
20 Present weatherwwWeather description
21 Precipitation descriptionPrecip descr
22 State of the sea descriptionState sea descr
23 ClearnessClearness
24 GustsGusts1 If wind gusts are reported
25 Precipitation/RainRain1 If rain was reported
26 FogFog1 If fog was reported
27 Snow typeSnow1 If snow was reported
28 ThunderThunder1 If thunder and or lightning was reported
29 HailHail1 If hail was reported
30 Sea iceSea ice1 If sea-ice or icebergs were reported
31 CommentComment
32 IdentificationIDCLIWOC 2.1 line number
Size:
765 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...)

PPPP [hPa]
(No temperature correction was...)

TTT [°C]

Landmark
(Name of first landmark)

Bearing
(Bearing of the first landmark)
10 
Distance [arbitrary units]
(Distance to the first landmark)
11 
Course
(Course of the ship during the...)
12 
Distance [arbitrary units]
(Distance travelled during the...)
13 
Decl [deg]
(It is generally accepted by t...)
14 
Reading [arbitrary units]
(Reading of the (outside) air ...)
15 
Reading [arbitrary units]
(Reading of the air pressure)
16 
Wind dir descr
(All reported wind directions ...)
17 
Cur dir descr
(Direction of the current. Thi...)
18 
V descr
19 
Wind force descr
(All reported wind forces on t...)
20 
ww
(Weather description)
21 
Precip descr
22 
State sea descr
23 
Clearness
24 
Gusts
(1 If wind gusts are reported)
25 
Rain
(1 If rain was reported)
26 
Fog
(1 If fog was reported)
27 
Snow
(1 If snow was reported)
28 
Thunder
(1 If thunder and or lightning...)
29 
Hail
(1 If hail was reported)
30 
Sea ice
(1 If sea-ice or icebergs were...)
31 
Comment
32 
ID
(CLIWOC 2.1 line number)
1811-04-05T08:00-18.0557.37861015.325.0AGALIGAN4W456N3E111.00-1577.00290908.00ESE, EBN, E, EBS, ESEW21AM SQUALLY AND VARIABLE, PM MODERATE BREEZESCLOUDY0000000178051
1811-04-06T08:00-15.3557.431126.71012.927.2SEYCHELLEN12:23W662N5E164.00-1281.00290901.00ESE, SEBEW11MODERATE BREEZESFINE0000000178052
1811-04-07T08:00-13.1357.371016.71011.927.2SEYCHELLEN15:20E531N134.00-1281.00290808.00SE, EBS, ESEMODERATE BREEZESFINE0000000178053
1811-04-08T08:00-10.6756.721256.71011.227.8GALEGAPOMNBE12N10:30W144.00-1082.00290806.00SEBE, SE, ESE, SEBSAM MODERATE BREEZES, PM LIGHT WINDSAM FINEPM CLOUDY0000000178054
1811-04-09T08:00-9.3056.952832.61011.925.0SEYCHELLEN23W307N8E85.00-1077.00290808.00SEBS, WBS, SSE, E, WNW, W, SWBSAM LIGHT WINDS, PM LIGHT AIRSAM THUNDER AND LIGHTNINGAM HEAVY RAIN, ALMOST CONSTANT RAINCLOUDY0100100178055
1811-04-10T08:00-9.0057.003620.01012.627.2SEYCHELLEN24:54W292N9E22.00-1081.00290900.00HEAD AROUND THE COMPASS, WBN, VARIABLE, WSW, SSW, E, NEAM CALM, PM LIGHT VARYING WINDSAM HEAVY SHOWERSAM CLOUDY1000000178056
1811-04-11T08:00-8.2357.052381.01012.327.8SEYCHELLEN29:11W251N45.00-1082.00290809.00NNE, SSW, SW, WSW, WBS, SWBS,N10AM CALM, LIGHT AIRS PM NEARLY CALMAM CLEAR0000000178057
1811-04-12T08:00-7.6357.152831.01015.327.2SEYCHELLEN34:15W221N5E38.00-1081.00290908.00SWBS, SWBW, WNW, NW, NWBWAM LIGHT AIRS, PM LIGHT BREEZESPM CLEAR0000000178058
1811-04-13T08:00-6.4057.403301010.926.7SEYCHELLEN33W129N5E74.00-880.00290805.00WNW, NW, WBN, NWBW, NNW, NWBN, NW,AM SQUALLYAM FINE, PM EXCEEDINGLY UNSETTLED, SQUALLY WEATHER. AM FREQUENT SHOWERS, PM SHOWERSAM UNCOMMONLY STRONG RIPPLING1000000178059
1811-04-14T08:00-6.3557.073526.71011.228.1SEYCHELLEN42W143N65W37.00-882.50290806.00NNW, NWBN, NBW, N, NNW, NWBNS33E22MODERATE BREEZESCLOUDY0000000178060
1811-04-15T08:00-5.7557.383186.71011.927.5SEYCHELLEN55W122N10W37.00-881.50290808.00NWBN, NWBW, NNW, W, NWBN, NNWSE24AM MODERATE BREEZES, PM LIGHT AIRSFINE0000000178061
1811-04-16T08:00-5.5357.332961.01012.628.3NOCHEN54W97N29W18.00-883.00290900.00NNW, NW, NWBW, WBS, WE10AM ALMOST CALM, PM LIGHT AIRS0000000178062
1811-04-17T08:00-4.5356.702171.01012.927.2NOCHES85W36N47W70.00-881.00290901.00W, SWBW, SWBS, WSW, SW, SSWN1/2E16LIGHT AIRSAM CLEAR0000000178063
1811-04-18T08:00-4.4756.422171.01011.227.8TROPIC BIRD ISLANDS78W10-882.00290806.00SWBW, SSW, SW, WSWNLIGHT AIRS, PM LIGHT AIRS WITH CALMS0000000178064
1811-04-27T08:00-3.8556.152621.01012.926.9ISLE ARIDSW24-880.50290901.00NW, NNW, W, NWLIGHT AIRSCLEAR0000000178065
1811-04-28T08:00-3.3357.732536.71011.926.9SE END OF MALDIVESS81E1060N70E94.00-680.50290808.00NW, WSW, WBN, WBS, WSE18AM MODERATE BREEZES, PM SQUALLYPM SHOWERYCLOUDY1000000178066
1811-04-29T08:00-1.9560.152439.31011.927.8SE END OF MALDIVESN84E933N54E142.00-582.00290808.00W, WBS, SWBW, WSW, VARIABLE, WSWE30AM STEADY BREEZES AND LIGHT WINDS, PM LIGHT AIRS WITH SQUALLS AT TIMESCLEAR0000000a trivial correction was made in this observation178067
1811-04-30T08:00-0.9261.952311.01011.627.8SE END OF MALDIVESN89E860N48E93.00-582.00290807.00SWBW, WSW, SWE44LIGHT AIRSCLOUDY0000000178068
1811-05-01T08:000.2763.582221.01011.629.2SE END OF MALDIVESS84E796N48E86.00-384.50290807.00SW, SWBS, SW, WN68E38LIGHT AIRSPM FINEAM CLOUDY0000000178069
1811-05-02T08:001.2265.732901.01010.928.6SE END OF MALDIVESS81E725N52E89.00-383.50290805.00WSW, W, WBS, WNW, WBN, WN82E60LIGHT AIRSFINE0000000178070
1811-05-03T08:001.2767.482671.01010.228.6SE END OF MALDIVESN85E620N87E81.00-383.50290803.00W, WBN, WSW, W, SWE23LIGHT AIRSFINE0000000178071
1811-05-04T07:001.2070.032352.61010.928.6MALDIVESS78E538S88E111.00-183.50290805.00SW, W, WBS, SWBW, WSW, SBEE42LIGHT WINDSFINE0000000178072
1811-05-05T07:001.2372.352471.01010.928.6MALDIVESS75E442N39W97.00-183.50290805.00SBE, SSE, WNW, S, WSW, S, SBES82E43LIGHT AIRSAM LIGHT SHOWERAM CLOUDY, CLEAR1000000178073
1811-05-06T07:001.6273.781801.01011.228.1DONDRA HEADN57E485N73E59.00082.50290806.00SSE, S, SWBS, S, SWBSN77E36FIRST PART LIGHT AIRS, LATTER LIGHT WINDSAM FINEPM CLEAR0000000178074
1811-05-07T07:002.5275.332251.01009.928.1DONDRA HEADN59E401N49E87.00082.50290802.00SBW, SWBS, WSW, SW, WBS, SSWS84E28AM LIGHT AIRS, PM LIGHT WINDS, SQUALLY, MODERATE BREEZESAM FINEPM RAINPM CLOUDY0100000178075
1811-05-08T07:003.5777.482366.71010.225.8DONDRA HEADN58E270N61E134.00078.50290803.00SWBW, NWBW, WBN, WS71E31AM MODERATE BREEZES, PM SQUALLY, MODERATEPM RAINPM CLOUDY0100000178076
1811-05-09T07:005.1579.752826.71010.228.1DONDRA HEADN70E87N55E188.00182.50290803.00WBN, W, WSW, WBN, WBS, SWBSS31W27MODERATE BREEZESAM CLOUDY, PM CLOUDY, CLEAR0000000178077
1811-05-10T07:006.4281.901926.71009.227.2CHIMNEY HILLWBN1/2N12181.00290800.00SWBS, SW, WBS, SBW, SSW, VARIABLE, NWS40W16AM MODERATE BREEZES, PM FRESH BREEZES, MODERATE BREEZESPM LIGHTNINGAM CLEAR, PM HAZY, CLOUDY0000100178078
1811-05-11T07:007.7382.271140.01008.529.7MADRASN16W333N6E88.00185.50290708.00NNW, NWBN, ESE, SEBS, WSWS32E32AM LIGHT WINDS, CALM, PM CALM, LIGHT AIRS, MODERATE BREEZES, LIGHT AIRSPM LIGHTNINGAM CLOUDY, HAZY, PM HAZY0000100178079
1811-05-12T07:008.3082.032371.01008.928.6MADRASN16W298N22W38.00183.50290709.00NNW, NWBN, W, WSW, SW, SWBW, SEBE, SE, WSWS23E28AM CALM, LIGHT AIRS, PM LIGHT AIRSAM HAZY, PM CLEAR0000000178080
1811-05-13T07:0010.1080.072496.71008.228.6MADRASN3E181N41W140.00183.50290707.00WSW, SWBW, SWBS, SW, WSW, SN63E9AM LIGHT WINDS, MODERATE BREEZES, PM MODERATE BREEZESAM CLOUDY, PM HAZY0000000178081