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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 MERWEDE cruise from Curacao to Nieuwediep started at 1853-12-12 [dataset]. Koninklijk Nederlands Meteorologisch Instituut, De Bilt, PANGAEA, https://doi.org/10.1594/PANGAEA.750790, 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: 16.554211 * Median Longitude: -69.128947 * South-bound Latitude: 12.580000 * West-bound Longitude: -71.200000 * North-bound Latitude: 22.400000 * East-bound Longitude: -66.800000
Date/Time Start: 1853-12-12T00:00:00 * Date/Time End: 1853-12-31T16:00:00
Event(s):
Merwede_18531212_M_REIS_27_P66-77 * Latitude Start: 12.370000 * Longitude Start: -68.570000 * Latitude End: 53.000000 * Longitude End: 4.490000 * Date/Time Start: 1853-12-12T00:00:00 * Date/Time End: 1853-12-31T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Merwede, Voyage: Curacao - Nieuwediep, 1st Observer: M.C. Van Vreeland (Kapitein)
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
--1 If position is considered to be coastal (in port or near coastal disturbances)
WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
10 GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
11 CommentCommentOther remarks, that were not possible to put in the other remark fields
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 scale referenceWind scale ref#Name of, or reference to the wind scale that has been used
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 Wind force descriptionWind force descrAll reported wind forces on this day
19 Present weatherwwWeather description
20 Precipitation descriptionPrecip descr
21 State of the sea descriptionState sea descr
22 Cloud typeCloud type
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 IdentificationIDCLIWOC 2.1 line number
Size:
432 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]

-
(1 If position is considered t...)

Watch
(Name of the period of 4 hours...)
10 
Glasses
(Number of glasses within a wa...)
11 
Comment
(Other remarks, that were not ...)
12 
Decl [deg]
(It is generally accepted by t...)
13 
Wind scale ref [#]
(Name of, or reference to the ...)
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 
Wind force descr
(All reported wind forces on t...)
19 
ww
(Weather description)
20 
Precip descr
21 
State sea descr
22 
Cloud type
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 
ID
(CLIWOC 2.1 line number)
1853-12-12T00:003621.01VM81VARIABEL1V04H000000000168838
1853-12-13T17:0012.58-69.221171.01016.027.8VM8THERMOMETER READING AT 9.00 AM4182.00762.00OZO1V01, V040000000168839
1853-12-14T17:0012.93-69.221172.61016.028.3VM8THERMOMETER READING AT 9.00 AM4283.00762.00OZO2V040000000168840
1853-12-15T17:0013.82-68.98726.7VM844ONO4V01H000000000168841
1853-12-16T17:0014.63-69.987212.31016.027.8VM8THERMOMETER READING AT 9.00 AM4682.00762.00ONO6V01, V050000000168842
1853-12-17T17:0016.17-70.72602.61016.026.7VM8THERMOMETER READING AT 9.00 AM480.00762.00NOTO5-2V010000000168843
1853-12-18T17:0017.42-70.97726.71014.726.1VM8THERMOMETER READING AT 9.00 AM4479.00761.00ONO4V04, V010000000168844
1853-12-19T17:0017.18-71.20609.31017.326.7VM8THERMOMETER READING AT 9.00 AM4580.00763.00NOTO5Z00V000000000168845
1853-12-20T17:0016.52-71.084912.31020.026.1VM8THERMOMETER READING AT 9.00 AM4679.00765.00NO6Z00V040000000168846
1853-12-21T17:0015.48-70.124912.31016.025.6VM8THERMOMETER READING AT 9.00 AM478.00762.00NO7-6W01W20V05, V011100000168847
1853-12-22T17:0014.58-69.277212.31016.026.7VM8THERMOMETER READING AT 9.00 AM4680.00762.00ONO6W00V001000000168848
1853-12-23T17:0014.85-69.1236215.41016.026.7VM8THERMOMETER READING AT 9.00 AM4780.00762.00VARIABEL7W00W201100000168849
1853-12-24T17:0015.97-69.48949.31016.025.6VM8THERMOMETER READING AT 9.00 AM4578.00762.00O5W20V10, V010100000168850
1853-12-25T17:0017.52-69.1821.01016.025.6VM8THERMOMETER READING AT 9.00 AM2178.00762.00N1V040000000168851
1853-12-26T17:0017.62-68.22472.61014.726.7VM8THERMOMETER READING AT 9.00 AM2280.00761.00NO2V05, V00, V010000000168852
1853-12-27T17:0017.53-68.07922.6VM822O2W20V100100000168853
1853-12-28T17:0018.08-67.872056.7VM824ZZW4V04, V00H000000000168854
1853-12-29T16:0019.17-66.97916.71018.726.7VM8THERMOMETER READING AT 9.00 AM1480.00764.00O4V00, V010000000168855
1853-12-30T16:0020.08-66.80919.31017.326.1VM8THERMOMETER READING AT 9.00 AM1579.00763.00OS00 NW5V00, V010000000168856
1853-12-31T16:0022.40-66.981259.31021.325.6VM8THERMOMETER READING AT 9.00 AM1578.00766.00ZOTO5W00W20V101100000168857