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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 AJAX cruise from Ambon to Soerabaja started at 1834-09-11 [dataset]. Nationaal Archief of the Netherlands, Den Haag, Netherland, PANGAEA, https://doi.org/10.1594/PANGAEA.747258, 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: -7.427500 * Median Longitude: 118.680833 * South-bound Latitude: -8.100000 * West-bound Longitude: 112.700000 * North-bound Latitude: -4.900000 * East-bound Longitude: 126.920000
Date/Time Start: 1834-09-11T04:00:00 * Date/Time End: 1834-09-22T04:00:00
Event(s):
Ajax_18340911_MAR_D23905_39 * Latitude Start: -3.880000 * Longitude Start: 128.290000 * Latitude End: -6.710000 * Longitude End: 112.800000 * Date/Time Start: 1834-09-11T00:00:00 * Date/Time End: 1834-09-22T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Ajax (Korvet), Voyage: Ambon - Soerabaja, 1st Observer: N.L. Koops (Ltz), Company: MAR, Other ship information: KORVET VAN OORLOG AJAX GEWAPEND MET 20 LANGE STUKKEN A 12 POND, 2 LANGE STUKKEN A 8 POND EN 6 CARONADES A 12 POND. BEMAND MET 160 KOPPEN EN EEN BOVEROL VAN 16 KOPPEN, TEZAMEN 176 KOPPEN
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 LandmarkLandmarkName of third landmark
14 BearingBearingBearing of the third landmark
15 Distance to landmarkDistancearbitrary unitsDistance to the third landmark
16 --1 If position is considered to be coastal (in port or near coastal disturbances)
17 WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
18 GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
19 CourseCourseCourse of the ship during the past 24 hours
20 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
21 CommentCommentOther remarks, that were not possible to put in the other remark fields
22 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.
23 Sensor readingReadingarbitrary unitsReading of the (outside) air thermometer
24 Sensor readingReadingarbitrary unitsReading of the air pressure
25 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.
26 Wind force descriptionWind force descrAll reported wind forces on this day
27 Present weatherwwWeather description
28 Precipitation descriptionPrecip descr
29 Cloud typeCloud type
30 ClearnessClearness
31 GustsGusts1 If wind gusts are reported
32 Precipitation/RainRain1 If rain was reported
33 FogFog1 If fog was reported
34 Snow typeSnow1 If snow was reported
35 ThunderThunder1 If thunder and or lightning was reported
36 HailHail1 If hail was reported
37 Sea iceSea ice1 If sea-ice or icebergs were reported
38 IdentificationIDCLIWOC 2.1 line number
Size:
306 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 
Landmark
(Name of third landmark)
14 
Bearing
(Bearing of the third landmark)
15 
Distance [arbitrary units]
(Distance to the third landmark)
16 
-
(1 If position is considered t...)
17 
Watch
(Name of the period of 4 hours...)
18 
Glasses
(Number of glasses within a wa...)
19 
Course
(Course of the ship during the...)
20 
Distance [arbitrary units]
(Distance travelled during the...)
21 
Comment
(Other remarks, that were not ...)
22 
Decl [deg]
(It is generally accepted by t...)
23 
Reading [arbitrary units]
(Reading of the (outside) air ...)
24 
Reading [arbitrary units]
(Reading of the air pressure)
25 
Wind dir descr
(All reported wind directions ...)
26 
Wind force descr
(All reported wind forces on t...)
27 
ww
(Weather description)
28 
Precip descr
29 
Cloud type
30 
Clearness
31 
Gusts
(1 If wind gusts are reported)
32 
Rain
(1 If rain was reported)
33 
Fog
(1 If fog was reported)
34 
Snow
(1 If snow was reported)
35 
Thunder
(1 If thunder and or lightning...)
36 
Hail
(1 If hail was reported)
37 
Sea ice
(1 If sea-ice or icebergs were...)
38 
ID
(CLIWOC 2.1 line number)
1834-09-11T04:00-4.90126.921364.61009.226.1VELTHAM EILAND (GIS)ZWTW 1/2 W34VM8ZW 1/8 Z23.00179.0029.80ZOBRAMZEILSKOELTEBUIENREGENBEWOLKTE LUCHT11000004870
1834-09-12T04:00-6.70124.401472.61009.227.8PULO COMBA (GIS)ZW23VM8ZW 3/4 W46.25182.0029.80ZZO-ZOTZFLAUWE BRAMZEILSKOELTEHELDERE LUCHT00000004871
1834-09-13T04:00-7.58123.331582.61012.627.8FLORISHOOFD (GIS)ZWTZ7VM8ZW 1/2 W20.75082.0029.90ZZOFLAUWE BRAMZEILSKOELTEOVERDRIJVENDE LUCHT00000004872
1834-09-14T04:00-8.05121.97684.61012.627.8RURA RAJI (?)ZW 3/4 ZPIEK VAN RUSAGALETTEOZO 1/2 OVLAKKE PUNT OP FLORES (GIS)WTZ14VM8WZW 1/4 W20.75082.0029.90OTN-ONOBRAMZEILSKOELTEBETROKKEN LUCHTHEIÏGE LUCHT00000004873
1834-09-15T04:00-8.03120.37791.01012.627.2GOENONG APIE BIJ SUMBAWA (GIS)W 1/4 Z19VM8W24.00081.0029.90O-OTNFLAUWE KOELTEREGENBUIÏGE LUCHT11000004874
1834-09-16T04:00-8.10118.73902.61012.627.8PUNT SABORA OP SUMBAWA (GIS)W 1/4 Z9GOENONG APIEO 1/2 ZROCKY PUNTWZWVM8W 1/4 Z24.25082.0029.90OFLAUWE BRAMZEILSKOELTEHEIÏGE LUCHT00000004875
1834-09-17T04:00-7.90117.571802.61012.627.8KAAP SADANA OP JAVA (GIS)W IETS Z44SOLUNDAZO 1/2 ZVM8W 3/4 N17.75082.0029.90ZZW-ZFLAUWE BRAMZEILSKOELTEHEIÏGE LUCHT00000004876
1834-09-18T04:00-8.00116.43901.01012.628.3KAAP SADANA OP JAVA (GIS)W28VM8W 1/3 Z17.00083.0029.90OZO-OFLAUW EN STILHEIÏGE LUCHT00000004877
1834-09-19T04:00-7.90115.022931.01012.628.3KAAP SADANA OP JAVAW 1/2 N7W LAND VAN BALIWZWVM8W 1/3 N21.25083.0029.90ZWTZ-WNWFLAUW EN STILHEIÏGE LUCHT00000004878
1834-09-20T04:00-7.42113.57682.61012.628.3PASJAREAN (?) (GIS)WZW10VM8WNW 1/3 W22.75083.0029.90ZO-ONOFLAUWE BRAMZEILSKOELTEHEIÏGE LUCHT00000004879
1834-09-21T04:00-7.32113.16564.61012.628.3VM8SCHIP IS BIJ DE OOSTVAARWATER VAN SOERABAJA083.0029.90OZO-NOTOBRAMZEILSKOELTEHEIÏGE LUCHT00000004880
1834-09-22T04:00-7.23112.70681.01012.630.61087.0029.90W-ONOFLAUW EN STILHEIÏGE LUCHT00000004881