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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 PORTLAND cruise from Madeira to St. Helena started at 1761-04-04 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.751265, 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: -7.241290 * Median Longitude: -16.028065 * South-bound Latitude: -29.800000 * West-bound Longitude: -28.570000 * North-bound Latitude: 31.880000 * East-bound Longitude: -1.640000
Date/Time Start: 1761-04-04T00:00:00 * Date/Time End: 1761-06-06T00:00:00
Event(s):
Portland_17610404_NMM_ADM/L/P208 * Latitude Start: 32.130000 * Longitude Start: -16.570000 * Latitude End: -15.890000 * Longitude End: -5.750000 * Date/Time Start: 1761-04-04T00:00:00 * Date/Time End: 1761-06-06T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Portland (4th Rate Frigate), Voyage: Madeira - St Helena, 1st Observer: Marriot Arbuthnot (Captain), 2nd Observer: Loftus Laforey (1st Officer/Master), Company: Royal Navy, Other ship information: 50G 968BM
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 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
15 Current speed descriptionV descr
16 Wind force descriptionWind force descrAll reported wind forces on this day
17 Present weatherwwWeather description
18 Precipitation descriptionPrecip descr
19 State of the sea descriptionState sea descr
20 ClearnessClearness
21 GustsGusts1 If wind gusts are reported
22 Precipitation/RainRain1 If rain was reported
23 FogFog1 If fog was reported
24 Snow typeSnow1 If snow was reported
25 ThunderThunder1 If thunder and or lightning was reported
26 HailHail1 If hail was reported
27 Sea iceSea ice1 If sea-ice or icebergs were reported
28 IdentificationIDCLIWOC 2.1 line number
Size:
1207 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 
Cur dir descr
(Direction of the current. Thi...)
15 
V descr
16 
Wind force descr
(All reported wind forces on t...)
17 
ww
(Weather description)
18 
Precip descr
19 
State sea descr
20 
Clearness
21 
Gusts
(1 If wind gusts are reported)
22 
Rain
(1 If rain was reported)
23 
Fog
(1 If fog was reported)
24 
Snow
(1 If snow was reported)
25 
Thunder
(1 If thunder and or lightning...)
26 
Hail
(1 If hail was reported)
27 
Sea ice
(1 If sea-ice or icebergs were...)
28 
ID
(CLIWOC 2.1 line number)
1761-04-04T00:0032.632141.0FUNSHOLENNW41SEBE, ESE, SWBSLIGHT AIRSFAIR0000000193247
1761-04-05T13:0031.88-16.75751.0SALVAGESBE38SBE1/2E38.00-15SW, NE, ENE, ELIGHT AIRSFAIR0000000193248
1761-04-06T13:0029.42-16.505319.0MADEIRAN11W45S1/2E149.00-15E, ENEFIRST PART SMALL BREEZES, MID AND LATTER FRESH GALESCLEAR0000000193249
1761-04-07T13:0028.53-17.1681.0NW PART OF TENIRIFFSSE41-15NEBE, NNEFIRST AND MID MODERATE, LATTER LIGHT AIRS AD CALM AT TIMESLATTER HEAVY RAINSFIRST AND MID CLOUDY0100000193250
1761-04-08T13:0026.70-17.75112.6PICO TENERIFFNNE1/2E42SSW1/2W125.00-12NBE, NNEFRESH GALES, AM SMALL BREEZESCLEAR0000000193251
1761-04-09T13:0024.83-18.603266.7PICO TENERIFFNNE1/4E82SSW118.00-12NNE, NWBN, NNWMODERATECLOUDY0000000193252
1761-04-10T13:0022.47-19.633046.7PICO TENERIFFN24:20E131SSW150.00-11NNW, NWMODERATE, BUT SQUALLY AT TIMES0000000193253
1761-04-11T13:0020.13-20.707919.0PICO TENERIFFNNE192S38W183.00-11NNE, NBE, NEBN, ENE, EFRESH GALES AND SQUALLY0000000193254
1761-04-12T13:0017.35-22.022419.0PICO TENERIFFN21:30E240S24W187.00-10NNE, NEBNFRESH GALES AND SQUALLY0000000193255
1761-04-13T14:0014.55-23.3546.7PICO TENERIFFNNE3/4E322S36E131.00-7NE, NBEFIRST AND MID PART BRISK GALES, LATTER MODERATEFIRST AND MID HAZY, LATTER FAIR0000000193256
1761-04-14T13:0013.50-22.41356.7ST JAGON36W40S36E119.00-10NNE, NEMODERATEHAZY0000000193257
1761-04-15T13:0011.20-21.043619.0ST JAGON33W94S29:30E159.00-9NEFRESH GALESHAZY0000000193258
1761-04-16T13:009.00-19.713516.7ST JAGON32:39E145SSE1/4E154.00-9NE, NMODERATEFAIR0000000193259
1761-04-17T13:007.25-18.42156.7ST JAGON33W188S34E127.00-8NEBN, NNEMODERATECLEAR0000000193260
1761-04-18T13:005.75-17.52152.6ST JAGON33W222S31:20E101.00-8NNEFIRST PART MODERATE, MIDDLE AND LATTER LIGHT BREEZESFIRST PART CLOUDY0000000193261
1761-04-19T13:004.60-16.82131.0ST JAGON32:30E249S31:20E81.00-10NNEFIRST PART MODERATE, MID AND LATTER LIGHT AIRSAM HEAVY THUNDER AND LIGHTNINGHEAVY SWELL FROM THE SSEFIRST PART HAZY, MID AND LATTER CLOUDY0000100193262
1761-04-20T13:004.43-16.791930.0ST JAGON31W250S12E10.00-10SBW, SSW, SSE, SBE, SSWFIRST AND LATTER PART CALM, MAIDDLE SMALL BREEZESCLOUDY0000000193263
1761-04-21T13:004.02-16.72238ST JAGON30:40W255S8:00E25.00-10E, SWBS, S, SEBE, SBE, SWBW, WSWLIGHT AIRS, HEAVY SQUALLSTHUNDER AND LIGHTNINGHEAVY RAINCLOUDY0100100193264
1761-04-22T13:004.28-16.473620.0ST JAGONNW3/4W262N42:11E22.00-10VARIABLEEBN6 FATHAMSCALMCLOUDY0000000193265
1761-04-23T13:003.88-15.921702.6ST JAGON34W272S54E41.00-10SSW, SWBS, SW, SSE, SSET ENE OR EBN5 FATHAMSSMALL BREEZESCLOUDY0000000193266
1761-04-24T13:003.18-16.371252.6ST JAGON31W279S33W48.00-10SBW, S, SESMALL BREEZESCLEAR0000000193267
1761-04-25T13:002.83-15.4614819.0ST JAGON33:50W296S72E66.00-10SBW, S, SSEFRESH GALESCLOUDY0000000193268
1761-04-26T13:002.40-15.71215ST JAGON32W300SWBS1/4W34.00-10SBW, S, WSW, WBS, SSW, SWSQUALLY0000000193269
1761-04-27T13:002.00-15.491700.0ST JAGON31:30W303SSE1/2E26.00-10SWBW, WSW, SFIRST PART MODERATE, BUT SQUALLY AT TIMES, MID AND LATTER CALMHEAVY RAIN0100000193270
1761-04-28T13:001.60-15.5412.6ST JAGON30:20W313S8W24.00-10WBS, WSW, WBN, NBELIGHT BREEZESSHOWERS OF RAIN1100000193271
1761-04-29T13:000.50-15.212266.7ST JAGON29:30W334SBE1/2S69.00-10NW, W, SWBWMODERATEHEAVY RAINCLOUDY0100000193272
1761-04-30T13:00-0.57-15.8626019.0ST JAGON26W350S31:00W75.00-10SSW, SWBS, SBW, NBS, WBN, WFIRST AND MID PART LITTLE WIND, LATTER FRESH GALESLATTER CLOUDY0000000193273
1761-05-01T13:00-2.02-17.3113619.0ST JAGON17W359SW128.00-10SBE, SSE, S, SEBSFRESH GALES AND SQUALLY0000000193274
1761-05-02T13:00-2.97-17.522751.0ST JAGON16:30W378S13W61.00-6SBE, SSE, S, EBS, NEBN, N, WBNFIRST AND MID PART FRESH GALES AND SQUALLY, LATTER LIGHT AIRSLATTER CLOUDY0000000193275
1761-05-03T13:00-4.12-18.8414019.0ST JAGON14W396S49W105.00-6SBE, SSE, SEBSFIRT PART MODERATE, MID AND LATTER FRESH GALES AND SQUALLYFIRST PART CLOUDY0000000193276
1761-05-04T13:00-5.83-21.0914019.0ST JAGON7W419S52W170.00-6SSE, SEBS, SEBSFRESH GALES AND SQUALLY0000000193277
1761-05-05T14:00-7.63-22.891436.7ST JAGON2W454SW153.00-3SBE, SSE, SEBSMODERATECLEAR0000000193278
1761-05-06T14:00-9.58-24.1413219.0ST JAGON1:50E494S32:30W140.00-3SSE, SEBS, SEFRESH GALESCLOUDY0000000193279
1761-05-07T14:00-11.35-25.1714319.0ST JAGON3E527S30W124.00-3SEBE, SE, SEBSFRESH GALESCLOUDY0000000193280
1761-05-08T14:00-13.25-26.1914419.0ST JAGON5E567S28:30W100.00-2SE, SEBSFRESH GALESCLOUDY0000000193281
1761-05-09T14:00-15.43-27.291226.7ST JAGON7E616S26:30W146.00-2SE, SEBS, SEBEMODERATE, BUT SQUALLY AT TIMESCLOUDY0000000193282
1761-05-10T14:00-17.02-28.57114ST JAGON8:50E649S38W121.001SEBE, SE, SEBS, ESESQUALLY, OTHER TIMES LITTLE WINDSMART SHOWERS OF RAIN1100000193283
1761-05-11T14:00-19.42-27.818119.0ST JAGON7E691SBE1/2E148.002EBNFRESH GALESCLOUDY0000000193284
1761-05-12T14:00-22.25-27.36676.7ST JAGON5:10E748S3/4E172.00-1EBN, E, ENEFIRST AND MID SMART GALES, LATTER MODERATECLOUDY0000000193285
1761-05-13T14:00-24.22-26.077919.0ST JAGON3E787S31E140.000NE, EBNFRESH GALESHAZY0000000193286
1761-05-14T14:00-26.30-24.57456.7ST JAGON0:56E827S33E152.000SEBE, ENE, NEMODERATECLOUDY0000000193287
1761-05-15T14:00-26.93-24.07682.6ST JAGON0:30E841S36E48.000SEBE, ENEFIRST PART MODERATE, MID AND LATTER SMALL BREEZESFIRST PART FAIR, MID AND LATTER CLEAR0000000193288
1761-05-16T14:00-26.83-22.7215819.0ST JAGON2:30W839N85E107.000SBW, S, SBE, SSEFIRST AND MID LIGHT AIRS, LATTER FRESH GALESCLOUDY0000000193289
1761-05-17T13:00-26.50-20.1214419.0ST JAGON3:00W834E4N146.00-2SSE, SBE, SEBSFRESH GALESHAZY0000000193290
1761-05-18T13:00-26.87-18.172126.7ST JAGON17W840S78E110.00-2SBE, SSE, SBW, SSW, SWBSMODERATEGREAT SWELL FROM SCLOUDY0000000193291
1761-05-19T13:00-27.53-14.6419919.0ST JAGON11:50W853S78E186.00-4SWBS, SSWFRESH GALES AND SQUALLY0000000193292
1761-05-20T13:00-27.92-12.011746.7ST JAGON16W861S81E154.00-6SW, SSW, SBW, SMODERATECLOUDY0000000193293
1761-05-21T13:00-27.25-9.541506.7ST JAGON17W890ENE1/2E134.00-8SWBS, SSW, SBW, SSEMODERATESHOWERS OF RAINCLOUDY1100000193294
1761-05-22T13:00-27.68-9.27959.3ST JAGON18:30W896S29E31.00-6SEBE, ESE, EBSFRESH BREEZESCLOUDY0000000193295
1761-05-23T13:00-29.02-9.02626.7ST JAGON18W928S3/4E92.00-6ESE, EBS, E, EBN, ENEMODERATECLOUDY0000000193296
1761-05-24T13:00-29.80-7.99506.7ST JAGON18E948SE78.00-6ENE, EBN, NE, NEBEMODERATECLOUDY0000000193297
1761-05-25T12:00-29.80-6.1622.6ST JAGON20W956E97.00-9NEBN, NNE, NBESQUALLY AT TIMES, LITTLE WIND0000000193298
1761-05-26T12:00-29.48-6.123406.7ST JAGON17:20W932N58E70.00-9NBE, N, NBWMODERATECLOUDY0000000193299
1761-05-27T12:00-29.00-5.623171.0ST JAGON21:20W944NE41.00-9N, NBW, NNW, NWBNLIGHT AIRSCLEAR0000000193300
1761-05-28T12:00-28.20-5.193061.0ST JAGON22W932N24E55.00-9NNW, NWBN, NWSMALL AIRSCLOUDY0000000193301
1761-05-29T12:00-27.52-3.8434019.0ST JAGON24W928N60E82.00-9NNW, NBE, N, NBWFIRST AND MID SMALL BREEZES, LATTER FRESH GALES AND SQUALLY0000000193302
1761-05-30T12:00-26.58-2.123036.7ST JAGON27W936N59E109.00-12NBW, N, NBE, NNW, NWBN, NWFIRST PART FRESH GALES AND SQUALLY, MID SMART GALES AND SQUALLY, LATTER MODERATELATTER CLOUDY0000000193303
1761-05-31T12:00-24.07-1.642819.3ST JAGON25W885N10E110.00-12W, SW, NW, WSW, WNWFRESH BREEZESCLOUDY0000000193304
1761-06-01T12:00-22.07-1.6421219.0ST JAGON30W860N163.00-13NWBN, NWBW, WNW, WBN, SWIN GENERAL FRESH GALES AND SQUALLY0000000193305
1761-06-02T12:00-19.70-2.2714519.0ST JAGON31W811NBW1/4W146.00-13SW, WSW, S, SSEFRESH GALESCLOUDY0000000193306
1761-06-03T12:00-18.20-3.021246.7ST JAGON32W784NNW1/4W99.00-11SSE, SEBE, EBS, SEMODERATECLOUDY0000000193307
1761-06-04T12:00-16.38-3.761236.7ST JAGON32W757N23W119.00-12SBE, SEBS, SEMODERATECLOUDY0000000193308
1761-06-05T12:00-15.95-6.0712319.0ST JAGON29W720N79W137.00-12SSE, SEFRESH GALESCLOUDY0000000193309
1761-06-06T00:00-15.98113SUGAR LOAF POINTNWBW301SE, ESESQUALLY0000000193310