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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 RATTLESNAKE cruise from Table Bay to St. Helena started at 1801-05-21 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.751700, 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: -23.797692 * Median Longitude: 5.323846 * South-bound Latitude: -34.220000 * West-bound Longitude: -5.280000 * North-bound Latitude: -15.450000 * East-bound Longitude: 17.930000
Date/Time Start: 1801-05-21T11:00:00 * Date/Time End: 1801-08-01T00:00:00
Event(s):
Rattlesnake_18010521_NMM_ADM/L/R57 * Latitude Start: -34.430000 * Longitude Start: 16.950000 * Latitude End: -15.890000 * Longitude End: -5.750000 * Date/Time Start: 1801-05-21T00:00:00 * Date/Time End: 1801-08-01T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Rattlesnake (Sloop), Voyage: Table Bay - St Helena, 1st Observer: Roger Curtis (Captain), Company: Royal Navy, Other ship information: 16G 330BM
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 Precipitation descriptionPrecip descr
16 State of the sea descriptionState sea descr
17 ClearnessClearness
18 GustsGusts1 If wind gusts are reported
19 Precipitation/RainRain1 If rain was reported
20 FogFog1 If fog was reported
21 Snow typeSnow1 If snow was reported
22 ThunderThunder1 If thunder and or lightning was reported
23 HailHail1 If hail was reported
24 Sea iceSea ice1 If sea-ice or icebergs were reported
25 CommentComment
26 IdentificationIDCLIWOC 2.1 line number
Size:
1116 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 
Precip descr
16 
State sea descr
17 
Clearness
18 
Gusts
(1 If wind gusts are reported)
19 
Rain
(1 If rain was reported)
20 
Fog
(1 If fog was reported)
21 
Snow
(1 If snow was reported)
22 
Thunder
(1 If thunder and or lightning...)
23 
Hail
(1 If hail was reported)
24 
Sea ice
(1 If sea-ice or icebergs were...)
25 
Comment
26 
ID
(CLIWOC 2.1 line number)
1801-05-21T11:00-34.2217.931986.7CAPE POINTS54E10N54W31.00-27S, SWCALM. AT 1 A BREEZE SPRUNG UP FROM THE SW0000000207619
1801-05-22T11:00-32.3715.331559.3ST HELENAN49:21W505N50W176.00-25SSE, SMODERATE BREEZES, AM STEADY BREEZESCLOUDY0000000207620
1801-05-23T11:00-30.5012.922009.3ST HELENAN51:3W464N46W162.00-25S, SWMODERATE BREEZES, AM FRESH BREEZESCLEAR WEATHER0000000207621
1801-05-24T11:00-28.2810.331809.3ST HELENAN51:57W401N44:30W190.00-23S, SSWMODERATE BREEZES, AM FRESH BREEZESHAZY WEATHER, AM CLOUDY0000000207622
1801-05-25T11:00-26.488.171469.3ST HELENAN52:46W349N47:45W160.00-23SSE, SBEFRESH BREEZESCLOUDY0000000207623
1801-05-26T12:00-24.886.251379.3ST HELENAN53:38W302N47:45W142.00-21SSEMODERATE BREEZES AM A PLEASANT TRADE WINDCLOUDY WEATHER0000000207624
1801-05-27T12:00-23.924.231256.7ST HELENAN56:01W251N43W162.00-21SEBSMODERATE BREEZESCLOUDY WEATHER0000000207625
1801-05-28T12:00-21.022.321276.7ST HELENAN59:26W200N43W155.00-20ESE, SEBSMODERATE BREEZESCLOUDY WEATHER0000000207626
1801-05-29T12:00-19.350.831726.7ST HELENAN69:39W160N40W133.00-20SEBE, SBWMODERATE BREEZESCLOUDY WEATHER0000000207627
1801-05-30T12:00-18.58-0.121162.6ST HELENAN63:58W122N50W75.00-20VARIABLE, SELIGHT BREEZESCLOUDY0000000207628
1801-05-31T12:00-17.67-1.231272.6ST HELENAN68:23W95N49W84.00-20SEBSLIGHT AIRS INCLINABLE TO CALM, AM LIGHT BREEZES AND VARIABLECLOUDY0000000207629
1801-06-01T12:00-16.65-2.471602.6ST HELENAN77:23W67N48:30W94.00-20SEBS, SLIGHT BREEZESCLOUDY WEATHER0000000207630
1801-06-02T00:00-15.972.6ST HELENAWBN1/2N8LIGHT BREEZESCLOUDY WEATHER0000000207631
1801-06-09T00:00-15.50362ST JAMESSSW9E, VARIABLEVARIABLERAIN0100000207632
1801-06-10T00:00-15.631139.3ST JAMESSW1/2W10SE, ESEMODERATE BREEZES, AM FRESH BREEZES AND SQUALLYCLOUDY0000000207633
1801-06-11T00:00-15.651356.7ST HELENAWBS9VARIABLE, SEFRESH BREEZES, AM MODERATE BREEZESCLOUDY, AM CLEAR0000000207634
1801-06-12T00:00-16.17135SUGAR LOAFNWBN1/2N6ESE, SEMODERATE BREEZES, AT 1 SQUALLY, AM UNSETTLED SQUALLY WEATHERCLOUDY0000000207635
1801-06-13T00:00-15.781589.3ST HELENAW1/2N10VARIABLE, SSEFRESH BREEZES AND SQUALLYAM RAIN AT TIMES0100000207636
1801-06-14T00:00-15.451246.7ST HELENAWBN9VARIABLE, SE, SEBEFRESH BREEZES AND SQUALLY, AM MODERATERAINAM CLOUDY0100000207637
1801-06-15T00:00-16.331356.7ST HELENANWBW14VARIABLE, SEMODERATE BREEZESCLOUDY0000000207638
1801-06-16T00:00-16.331356.7ST HELENANW1/2W16SEBS, SEMODERATECLOUDY0000000207639
1801-06-17T00:00-16.321806.7SUGAR LOAFNNW7SBW, SMODERATE, AM MODERATE BREEZESCLOUDY, AM DARK CLOUDY WEATHER0000000207640
1801-06-18T00:00-15.871136.7ISLANDWBN8VARIABLE, ESEMODERATE BREEZESRAIN AT TIMESAM CLOUDY0100000207641
1801-06-19T00:00-16.171356.7ST HELENANWBW12ESE, SEMODERATE BREEZESFINE PLEASANT WEATHER0000000207642
1801-06-20T00:00-15.871806.7ST HELENAW8SE, SMODERATE BREEZESCLOUDY WEATHER0000000207643
1801-06-21T00:00-16.101466.7ST HELENANW1/2N9SE, SEBSMODERATE BREEZESCLOUDY WEATHER, AM DARK CLOUDY WEATHER0000000207644
1801-06-22T00:00-15.8312412.3ST HELENAW1/2N11SE, SEBESTRONG BREEZES AND SQUALLY WEATHERRAINAM CLOUDY0100000207645
1801-06-23T00:00-16.331356.7SUGAR LOAFNBW1/2W10SEBE, SEMODERATE BREEZES, AM MODERATECLOUDY WEATHER, AM PLEASANT0000000207646
1801-06-24T00:00-16.031586.7ST HELENAWNW1/2W12SBE, SSEMODERATE BREEZESCLOUDY WEATHER,0000000207647
1801-06-25T00:00-16.081916.7ST HELENANWBW1/2W13VARIABLE, SBWLIGHT BREEZES, AM MODERATE BREEZESCLOUDY WEATHER0000000207648
1801-06-26T00:001586.7ST HELENANWBW8SEBE, SSEMODERATE BREEZES AND SQUALLYAM CLOUDY0000000207649
1801-06-27T00:00-16.121466.7ST HELENANW1/2W7SEBSMODERATE BREEZESCLOUDY0000000207650
1801-06-28T00:00-15.872366.7ISLANDWBN10SWBWMODERATE BREEZESCLOUDY0000000207651
1801-06-29T00:00-16.331469.3SUGAR LOAFNWBN8SEBSMODERATE BREEZES, AM FRESH BREEZESDARK CLOUDY WEATHER, AM CLOUDY0000000207652
1801-06-30T00:00-15.921016.7ISLANDW1/2S6EBSMODERATE BREEZES AND SQUALLYDRIZZLING RAIN0100000207653
1801-07-01T00:001016.7ST HELENAN7EBSMODERATE BREEZESRAINCLOUDY0100000207654
1801-07-02T00:00-16.001136.7ST HELENANWBW6SE, ESEMODERATE BREEZESCLOUDY0000000207655
1801-07-03T00:00-16.271696.7ST HELENANBW8VARIABLE, SBEMODERATE BREEZESCLOUDY0000000207656
1801-07-04T00:00-16.031469.3HIGH NOLENW5SSE, SEBSFRESH BREEZESCLOUDY WEATHER0000000207657
1801-07-05T00:00-16.281466.7HIGH NOLENBW TO WBN7VARIABLE, SEBSMODERATE BREEZESCLOUDY WEATHER0000000207658
1801-07-06T00:00-16.181466.7HIGH NOLENWBN8SE, SEBSMODERATE BREEZESCLOUDY WEATHER0000000207659
1801-07-07T00:00-16.131136.7HIGH NOLENBW1/2W5VARIABLE, ESEFRESH BREEZES, AM MODERATE BREEZESCLOUDY WEATHER0000000207660
1801-07-08T00:00-16.081460.0ISLANDNWBW10VARIABLE, SEBSMODERATE BREEZES, AT 10 SQUALLY, AM LIGHT AIRS INCLINING TO CALMAT 10 RAINPLEASANT WEATHER0100000207661
1801-07-09T00:00-16.37146ISLANDNBW12VARIABLE, SEBSFRESH BREEZES AND SQUALLY, AM SQUALLYRAIN0100000207662
1801-07-10T00:00-16.481359.3ISLANDN10SEBE, SEFRESH BREEZES AND SQUALLY0000000207663
1801-07-11T00:00-15.723626.7ISLANDWBS9SE, VARIABLEMODERATE BREEZES AND SQUALLY, AM MODERATE BREEZES AND DARK SQUALLY WEATHERRAIN0100000207664
1801-07-12T00:00158JAMES TOWNSWBS31VARIABLE, SSEMODERATE BREEZES, AT 4 SQUALLYAT 4 RAINCLOUDY WEATHER0100000207665
1801-07-13T12:00-15.45-5.283629.3JAMES TOWNSW1/2W15N48E42.00-18SEBS, VARIABLEFRESH BREEZES AND SQUALLYSMALL RAINAM CLOUDY0100000a trivial correction was made in this observation207666
1801-07-14T00:00-15.981356.7SUGAR LOAFNWBW8ESE, SEMODERATE BREEZESPLEASANT WEATHER, AM CLOUDY0000000207667
1801-07-15T00:00-16.081356.7ST HELENANW1/2W7SEMODERATE BREEZES AND DARK SQUALLY WEATHERSMALL RAIN0100000207668
1801-07-16T00:00-16.101246.7ST HELENANW8ESE, SEBEMODERATE BREEZESCLOUDY WEATHER0000000207669
1801-07-17T00:00-15.871246.7SUGAR LOAFWBN9SEBEMODERATE BREEZESPLEASANT WEATHER0000000207670
1801-07-18T00:00-15.931246.7ISLANDWBN1/2N9SEBELIGHT BREEZES, AM MODERATE BREEZESCLOUDY0000000207671
1801-07-19T00:00-16.351806.7ISLANDNNW1/2W11VARIABLE, SMODERATE BREEZESCLEAR WEATHER0000000207672
1801-07-20T00:00-15.751016.7SUGAR LOAF POINTWBS8E, EBSMODERATE BREEZESCLEAR WEATHER0000000207673
1801-07-21T00:00-15.68681.0SUGAR LOAF POINTWSW9ENELIGHT AIRSCLEAR0000000207674
1801-07-22T00:00-15.823622.6ST HELENAW1/2S10SE, VARIABLELIGHT AIRS, AM LIGHT BREEZESCLEAR0000000207675
1801-07-23T00:001011.0SUGAR LOAF HILLNWBN11VARIABLE, EBSLIGHT BREEZES, AM LIGHT AIRSSWELL FROM THE SSWCLEAR, AM PLEASANT WEATHER0000000207676
1801-07-24T00:00-16.223621.0ST HELENANW12VARIABLELIGHT AIRSSWELL FROM THE SSWAM CLOUDY0000000207677
1801-07-25T00:00-16.231919.3ST HELENANNW9S, SBWLIGHT AIRS, AM FRESH BREEZES AND SQUALLYAM RAINPLEASANT WEATHER0100000207678
1801-07-26T00:00-16.221589.3HIGH KNOWLENWBN1/2N11SSEFRESH BREEZESCLOUDY0000000207679
1801-07-27T00:00-15.871466.7ST HELENAWBN10SSE, SEBSMODERATE BREEZESCLOUDY0000000207680
1801-07-28T00:00-15.821356.7ST HELENAWBN10SEMODERATE BREEZESSHOWERS OF RAINCLOUDY1100000207681
1801-07-29T00:00-16.083620.0HIGH KNOWLENWBW10VARIABLEMODERATE BREEZES, AM LIGHT AIRS, AT 7 INCLINED TO CALMCLOUDY WEATHER0000000207682
1801-07-30T00:00-15.783620.0ST HELENAWSW1/2W9ESE, VARIABLELIGHT AIRS, AM CALMPLEASANT WEATHER0000000207683
1801-07-31T00:00-15.821016.7ST HELENAW8VARIABLE, EBSMODERATE BREEZESCLOUDY WEATHER0000000207684
1801-08-01T00:00-15.62362SUGAR LOAF POINTWSW8VARIABLEMODERATE BREEZES, AT 8 SQUALLY UNSETTLED WEATHERRAINPLEASANT WEATHER0100000207685