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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 BOREAS cruise from Batavia to Riouw started at 1844-08-25 [dataset]. Koninklijk Nederlands Meteorologisch Instituut, De Bilt, PANGAEA, https://doi.org/10.1594/PANGAEA.747683, 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: -2.434286 * Median Longitude: 105.681429 * South-bound Latitude: -5.670000 * West-bound Longitude: 104.810000 * North-bound Latitude: 0.250000 * East-bound Longitude: 106.830000
Date/Time Start: 1844-08-25T05:00:00 * Date/Time End: 1844-09-04T05:00:00
Event(s):
Boreas_18440825_X_REIS_5_PI-7-10 * Latitude Start: -6.100000 * Longitude Start: 106.860000 * Latitude End: 1.150000 * Longitude End: 104.230000 * Date/Time Start: 1844-08-25T00:00:00 * Date/Time End: 1844-09-04T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Boreas (Korvet), Voyage: Batavia - Riouw, 1st Observer: J.W. Jollij (Ltz), Company: MAR
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 LandmarkLandmarkName of second landmark
12 BearingBearingBearing of the second landmark
13 Distance to landmarkDistancearbitrary unitsDistance to the second landmark
14 --1 If position is considered to be coastal (in port or near coastal disturbances)
15 WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
16 GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
17 CommentCommentOther remarks, that were not possible to put in the other remark fields
18 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.
19 Wind scale referenceWind scale ref#Name of, or reference to the wind scale that has been used
20 Sensor readingReadingarbitrary unitsReading of the (outside) air thermometer
21 Sensor readingReadingarbitrary unitsReading of the air pressure
22 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.
23 Wind force descriptionWind force descrAll reported wind forces on this day
24 Present weatherwwWeather description
25 Precipitation descriptionPrecip descr
26 Cloud typeCloud type
27 ClearnessClearness
28 GustsGusts1 If wind gusts are reported
29 Precipitation/RainRain1 If rain was reported
30 FogFog1 If fog was reported
31 Snow typeSnow1 If snow was reported
32 ThunderThunder1 If thunder and or lightning was reported
33 HailHail1 If hail was reported
34 Sea iceSea ice1 If sea-ice or icebergs were reported
35 IdentificationIDCLIWOC 2.1 line number
Size:
180 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 
Landmark
(Name of second landmark)
12 
Bearing
(Bearing of the second landmark)
13 
Distance [arbitrary units]
(Distance to the second landmark)
14 
-
(1 If position is considered t...)
15 
Watch
(Name of the period of 4 hours...)
16 
Glasses
(Number of glasses within a wa...)
17 
Comment
(Other remarks, that were not ...)
18 
Decl [deg]
(It is generally accepted by t...)
19 
Wind scale ref [#]
(Name of, or reference to the ...)
20 
Reading [arbitrary units]
(Reading of the (outside) air ...)
21 
Reading [arbitrary units]
(Reading of the air pressure)
22 
Wind dir descr
(All reported wind directions ...)
23 
Wind force descr
(All reported wind forces on t...)
24 
ww
(Weather description)
25 
Precip descr
26 
Cloud type
27 
Clearness
28 
Gusts
(1 If wind gusts are reported)
29 
Rain
(1 If rain was reported)
30 
Fog
(1 If fog was reported)
31 
Snow
(1 If snow was reported)
32 
Thunder
(1 If thunder and or lightning...)
33 
Hail
(1 If hail was reported)
34 
Sea ice
(1 If sea-ice or icebergs were...)
35 
ID
(CLIWOC 2.1 line number)
1844-08-25T05:00-5.67106.831812.6ZUIDWACHTERZW 1/4 Z1NOORDWACHTERWNW 3/4 W21VM812Z2W20V01010000031356
1844-08-26T05:00-4.62106.51241.0VM811NNO1W40W20V10010010031357
1844-08-27T05:00-3.33106.271591.0LUCIPARAN 1/2 WVM811ZZO1V01000000031358
1844-08-28T00:00-3.002259.31VM85ZW5V04000000031359
1844-08-29T00:00-2.221802.6MONAPIJNNW 1/2 W1VM8TEN ANKER TOT 1 SPETEMBER.2Z2V01000000031360
1844-09-01T05:00-2.05104.97241.01VM811NNO1V04000000031361
1844-09-02T05:00-1.44105.101594.6MONAPIJNZTO 3/4 OVM813ZZO3V01000000031362
1844-09-03T05:00-0.18105.28466.7LINGEN, PIEKW IETS ZVM814NO4W40W22V10010010031363
1844-09-04T05:000.25104.811922.61014.728.3VM8OP 5 SEPTEMBER OP DE REDE VAN RIOUW.1283.00761.00ZTW2H01000000031364