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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 La Boussole cruise from Langle to Castries started at 1787-07-14 [dataset]. Nederlands Instituut voor Wetenschappelijke Inform, Amsterdam, Netherland, PANGAEA, https://doi.org/10.1594/PANGAEA.750059, 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: 49.926000 * Median Longitude: 141.438000 * South-bound Latitude: 48.200000 * West-bound Longitude: 140.920000 * North-bound Latitude: 51.670000 * East-bound Longitude: 141.840000
Date/Time Start: 1787-07-14T03:00:00 * Date/Time End: 1787-07-28T03:00:00
Event(s):
La_Boussole_17870714_NIWI-F-1573 * Latitude Start: 47.880000 * Longitude Start: 141.900000 * Latitude End: 51.480000 * Longitude End: 140.980000 * Date/Time Start: 1787-07-14T00:00:00 * Date/Time End: 1787-07-28T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: La Boussole (Exploration Ves), Voyage: Langle - Castries, 1st Observer: J.F.G. de La Perouse (Kapitein), Other ship information: 450 TONS, THREE MASTS, SQUARE RIGGED, COMPLEMENT 113. HET GEDRUKTE BOEK HEET: VOYAGE DE LA PEROUSE AUTOUR DU MONDE. (1797), GEREDIGEERD DOOR M.L.A. MILET-MUREAU. HET BETREFT EEN ZEER BEKENDE REIS WAAROVER OP INTERNET VEEL IS GEPUBLICEERD. HET DERDE DEEL BEVAT EEN TABEL MET METEREOLOGISCHE GEGEVENS, DEZE IS HIER VERWERKT. HET SCHIP VOER IN KONVOOI MET L'ASTROLABE, DIT JOURNAAL IS OOK IN TABELVORM WEERGEGEVEN EN GEEFT OOK UITGEBREIDE WEERGEGEVENS.
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 --1 If position is considered to be coastal (in port or near coastal disturbances)
12 CommentCommentOther remarks, that were not possible to put in the other remark fields
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 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 Wind force descriptionWind force descrAll reported wind forces on this day
18 Present weatherwwWeather description
19 GustsGusts1 If wind gusts are reported
20 Precipitation/RainRain1 If rain was reported
21 FogFog1 If fog was reported
22 Snow typeSnow1 If snow was reported
23 ThunderThunder1 If thunder and or lightning was reported
24 HailHail1 If hail was reported
25 Sea iceSea ice1 If sea-ice or icebergs were reported
26 IdentificationIDCLIWOC 2.1 line number
Size:
280 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 
-
(1 If position is considered t...)
12 
Comment
(Other remarks, that were not ...)
13 
Decl [deg]
(It is generally accepted by t...)
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 
Wind force descr
(All reported wind forces on t...)
18 
ww
(Weather description)
19 
Gusts
(1 If wind gusts are reported)
20 
Rain
(1 If rain was reported)
21 
Fog
(1 If fog was reported)
22 
Snow
(1 If snow was reported)
23 
Thunder
(1 If thunder and or lightning...)
24 
Hail
(1 If hail was reported)
25 
Sea ice
(1 If sea-ice or icebergs were...)
26 
ID
(CLIWOC 2.1 line number)
1787-07-14T03:0048.22141.842039.31006.416.91013.50271005.00SSWBON FRAIS0000000132156
1787-07-15T03:0048.45141.811809.31007.113.8011.00271007.00SBON FRAISDE LA BRUME0010000132157
1787-07-16T03:0048.37141.482039.31008.715.0012.00271103.00SSWBON FRAISDE LA BRUME0010000132158
1787-07-17T03:0048.33141.111809.31006.412.5010.00271005.00SBON FRAISDE LA BRUME0010000132159
1787-07-18T03:0048.20141.031586.71006.714.8011.80271006.00SSEPETIT FRAISDE LA BRUME0010000132160
1787-07-19T03:0048.98141.671589.31006.716.3LE PIC DE LAMANONN65E4MOUILLÉ PAR 20 BRASSES, FOND DE VASE, À 3/4 DE LIEUE DE TERRE, DANS LA BAIE DESTAING. LATITUDE ET LONGITUDE DU MOUILLAGE013.00271006.00SSEBON FRAIS0000000132161
1787-07-20T03:0049.43141.671806.71006.417.5MOUILLÉ À I LIEUE DE TERRE PAR 39 BRASSES, FOND DE SABLE FIN (19:00)014.00271005.00SPETIT FRAISNÉBULEUX0000000132162
1787-07-21T03:0049.88141.651806.71006.716.3APPAREILLÉ (04:00)013.00271006.00SPETIT FRAISNÉBULEUX0000000132163
1787-07-22T03:0050.52141.571806.71007.517.5LA SONDE RAPPORTAIT LE FOND DE 80 À 45 BRASSES, PROLONGEANT LA CÔTE DE LÎLE SÉGALIEN. MOUILLÉ À 1 LIEUE 1/2 DE TERRE, PAR LES 42 BRASSES, FOND DE VASE (14:30).014.00271008.00SPETIT FRAISNÉBULEUX0000000132164
1787-07-23T03:0050.87141.771801.01008.318.1APPAREILLÉ (05:00), SONDÉ PAR 30. BRASSES, 38, 35, 30 ET 29, FOND DE SABLE (16:00)014.50271102.00SPRESQUE CALMEDE LA BRUME0010000132165
1787-07-24T03:0051.48141.621806.71011.317.5SONDÉ PAR 15, 16, 18,20 ET 22 BRASSES, EN APPROCHANT DU MILIEU DE LA MANCHE DE TARTARIE014.00280002.00SPETIT FRAIS0000000132166
1787-07-25T03:0051.48140.921806.71013.116.3LE CAPNEAPPAREILLÉ (14:00), PROLONGEANT LA TERRE. LA SONDE A RAPPORTÉ 19 BRASSES, FOND DE SABLE (19:30)013.00280007.00SPETIT FRAISNEBULEUX0000000132167
1787-07-26T03:0051.67141.182031012.816.3LE FOND A AUGMENTÉ PROGRESSIVEMENT DE 8 À 9, 12, 14, 16, 18 ET 21 BRASSES, FOND DE VASE. LATITUDE ET LONGITUDE DU MOUILLAGE013.00280006.00SSW0000000132168
1787-07-27T03:0051.53141.2720315.41011.715.0SONDÉ PAR 18, 16, 15, 14, 13 ET 12 BRASSES. MOUILLÉ DANS LA BAIE DE CASTRIES, PAR IL BRASSES (19:30)012.00280003.00SSWGRAND FRAISUN PEU DE BRUME0010000132169
1787-07-28T03:0051.48140.982039.31011.715.01012.00280003.00SSWBON FRAISBEAU0000000132170