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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 MAAS cruise from Texel to Rio de Janeiro started at 1838-03-27 [dataset]. Koninklijk Nederlands Meteorologisch Instituut, De Bilt, PANGAEA, https://doi.org/10.1594/PANGAEA.750560, 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: 24.532759 * Median Longitude: -15.297931 * South-bound Latitude: -0.330000 * West-bound Longitude: -21.780000 * North-bound Latitude: 52.350000 * East-bound Longitude: 2.830000
Date/Time Start: 1838-03-27T12:00:00 * Date/Time End: 1838-04-27T13:00:00
Event(s):
Maas_18380327_1+_REIS_7_P81-87 * Latitude Start: 53.090000 * Longitude Start: 4.670000 * Latitude End: -23.370000 * Longitude End: -43.120000 * Date/Time Start: 1838-03-27T00:00:00 * Date/Time End: 1838-04-27T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Maas (Fregat), Voyage: Texel - Rio De Janeiro, 1st Observer: K.W. Maren (Kapitein), 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 --1 If position is considered to be coastal (in port or near coastal disturbances)
11 WatchWatchName of the period of 4 hours which is known as a watch or duty on board ships
12 GlassesGlassesNumber of glasses within a watch; one watch equals 8 glasses
13 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.
14 Wind scale referenceWind scale ref#Name of, or reference to the wind scale that has been used
15 Sensor readingReadingarbitrary unitsReading of the (outside) air thermometer
16 Sensor readingReadingarbitrary unitsReading of the air pressure
17 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.
18 Wind force descriptionWind force descrAll reported wind forces on this day
19 Present weatherwwWeather description
20 Precipitation descriptionPrecip descr
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:
522 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 
-
(1 If position is considered t...)
11 
Watch
(Name of the period of 4 hours...)
12 
Glasses
(Number of glasses within a wa...)
13 
Decl [deg]
(It is generally accepted by t...)
14 
Wind scale ref [#]
(Name of, or reference to the ...)
15 
Reading [arbitrary units]
(Reading of the (outside) air ...)
16 
Reading [arbitrary units]
(Reading of the air pressure)
17 
Wind dir descr
(All reported wind directions ...)
18 
Wind force descr
(All reported wind forces on t...)
19 
ww
(Weather description)
20 
Precip descr
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)
1838-03-27T12:0052.352.832042.61022.41VM8-212290309.00ZW20000000155644
1838-03-29T12:0050.831.05672.61025.814.41-23258.00290411.00O20000000155645
1838-03-30T12:0050.47-1.15222.61-232NO20000000155646
1838-03-31T12:0050.33-2.256715.41010.514.41-23758.00281108.00O70000000155647
1838-04-01T12:0049.20-5.8723.9-2575.000000000155648
1838-04-02T13:0046.25-9.108815.41005.712.8-25755.00281000.00OZO7SOMS REGEN0100000155649
1838-04-03T13:0042.40-12.802112.31004.012.8-24655.00280905.00NO60000000155650
1838-04-04T13:0038.77-14.2235912.31008.614.4-24658.00281100.00NNO60000000155651
1838-04-05T13:0035.17-15.1319.31011.515.6-22560.00290000.00NNO50000000155652
1838-04-06T13:0033.38-15.68682.61011.517.8PORTO SANTO-22264.00290000.00O20000000155653
1838-04-07T13:0031.75-15.78476.71011.518.3DER SERTES (DEZERTA GRANDE EN BUGIO)WNW-21465.00290000.00ONO40000000155654
1838-04-08T13:0028.42-16.133512.31008.618.3-21665.00281100.00NOTO6SOMS ZWARE REGEN0100000155655
1838-04-09T13:0026.92-16.652054.61005.720.0-20368.00281000.00ZW3MOESSON?0000000155656
1838-04-10T13:0026.33-17.452059.3999.920.6-20569.00280800.00ZW50100000155657
1838-04-11T13:0024.08-18.672964.61002.821.7-19371.00280900.00NW30000000155658
1838-04-12T13:0022.68-19.823522.61004.021.7-19271.00280905.00NTO20000000155659
1838-04-13T13:0020.63-20.5354.61002.822.8-18373.00280900.00NNO30000000155660
1838-04-14T13:0018.27-21.0256.71002.822.8-18473.00280900.00NNO40000000155661
1838-04-15T13:0015.23-21.6559.3999.923.9-18575.00280800.00NNO50000000155662
1838-04-16T13:0012.40-21.783546.7999.924.4-17476.00280800.00NTO40000000155663
1838-04-17T13:0010.32-21.403322.6994.126.1-17279.00280600.00NTW20000000155664
1838-04-18T13:008.20-20.97282.6991.226.1-17279.00280500.00NO20000000155665
1838-04-20T13:005.92-21.08282.6995.326.7-17280.00280605.00NO20000000155666
1838-04-21T13:004.00-20.853431.0997.027.8-17182.00280700.00N10000000155667
1838-04-23T13:003.33-20.183322.6996.228.3-17283.00280609.00NTW2MOESSON?0000000155668
1838-04-24T13:002.15-19.102094.6994.128.3-16383.00280600.00ZW30000000155669
1838-04-25T13:001.27-18.201752.6992.427.8-16282.00280505.00ZTW20000000155670
1838-04-26T13:000.73-19.281534.6994.127.8-16382.00280600.00ZTO30000000155671
1838-04-27T13:00-0.33-20.781534.6994.127.2-16381.00280600.00ZTO30000000155672