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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 SYREN cruise from New York to Boston started at 1755-04-23 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.752423, 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: 41.467778 * Median Longitude: -67.930000 * South-bound Latitude: 39.330000 * West-bound Longitude: -69.730000 * North-bound Latitude: 44.820000 * East-bound Longitude: -65.780000
Date/Time Start: 1755-04-23T00:00:00 * Date/Time End: 1755-05-02T17:00:00
Event(s):
Syren_17550423_NMM_ADM/L/S619 * Latitude Start: 40.670000 * Longitude Start: -74.040000 * Latitude End: 41.980000 * Longitude End: -67.060000 * Date/Time Start: 1755-04-23T00:00:00 * Date/Time End: 1755-05-02T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Syren, Voyage: New York - Boston, 1st Observer: Thomas Winter (Lieutenant), Company: Royal Navy
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
LandmarkLandmarkName of first landmark
BearingBearingBearing of the first landmark
Distance to landmarkDistancearbitrary unitsDistance to the first landmark
--1 If position is considered to be coastal (in port or near coastal disturbances)
10 CourseCourseCourse of the ship during the past 24 hours
11 DistanceDistancearbitrary unitsDistance travelled during the previous 24 hours
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 direction descriptionWind dir descrAll reported wind directions on this day. The wind direction is the direction that points to where the wind comes from.
14 Current direction descriptionCur dir descrDirection of the current. This direction points to where the current is flowing towards to.
15 Current speed descriptionV descr
16 Wind force descriptionWind force descrAll reported wind forces on this day
17 Present weatherwwWeather description
18 Precipitation descriptionPrecip descr
19 ClearnessClearness
20 GustsGusts1 If wind gusts are reported
21 Precipitation/RainRain1 If rain was reported
22 FogFog1 If fog was reported
23 Snow typeSnow1 If snow was reported
24 ThunderThunder1 If thunder and or lightning was reported
25 HailHail1 If hail was reported
26 Sea iceSea ice1 If sea-ice or icebergs were reported
27 IdentificationIDCLIWOC 2.1 line number
Size:
192 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...)

Landmark
(Name of first landmark)

Bearing
(Bearing of the first landmark)

Distance [arbitrary units]
(Distance to the first landmark)

-
(1 If position is considered t...)
10 
Course
(Course of the ship during the...)
11 
Distance [arbitrary units]
(Distance travelled during the...)
12 
Decl [deg]
(It is generally accepted by t...)
13 
Wind dir descr
(All reported wind directions ...)
14 
Cur dir descr
(Direction of the current. Thi...)
15 
V descr
16 
Wind force descr
(All reported wind forces on t...)
17 
ww
(Weather description)
18 
Precip descr
19 
Clearness
20 
Gusts
(1 If wind gusts are reported)
21 
Rain
(1 If rain was reported)
22 
Fog
(1 If fog was reported)
23 
Snow
(1 If snow was reported)
24 
Thunder
(1 If thunder and or lightning...)
25 
Hail
(1 If hail was reported)
26 
Sea ice
(1 If sea-ice or icebergs were...)
27 
ID
(CLIWOC 2.1 line number)
1755-04-23T00:0031519.0SANDY HOOKNW5NWBN, NWFRESH GALESCLEAR0000000249939
1755-04-24T17:0039.33-69.732076.7NANTUCKET SHOALSN18E16S75E202.00-7SWBSMODERATECLOUDY0000000249940
1755-04-25T17:0040.98-68.5525219.0SANDY HOOKS88W83N30E110.00-7SE-WBSFRESH GALESHAZY0000000249941
1755-04-26T17:0039.85-68.602526.7SANDY HOOKN82W61S2W62.00-7WBN-W, WBSFIRST PART HARD GALES AND SQUALLY, LATTER MORE MODERATE0000000249942
1755-04-27T17:0040.63-68.303626.7SANDY HOOKS85W88N20E44.00-7VARIABLEMODERATECLOUDY0000000249943
1755-04-28T16:0040.22-67.3336226.8SANDY HOOKN85W107S30E54.00-8VARIABLESSW1.5FIRST PART LIGHT AIRS, LATTER PART HARD GALES AND SQUALLYFIRST PART FOGGY, LATTER THUNDER AND LIGHTNINGLATTER PART RAIN0110100249944
1755-04-29T16:0044.82-65.7821119.0SANDY HOOKS78W1271N34E126.00-14WSW, SWFRESH GALESCLOUDY0000000249945
1755-04-30T16:0042.33-66.753622.6CAPE ANNN79W40N35W53.00-8VARIABLELIGHT WINDSFOGGY0010000249946
1755-05-01T16:0042.25-67.183621.0CAPE CODS85W18S75W20.00-8VARIABLESBW1LIGHT AIRSCLOUDY0000000249947
1755-05-02T17:0042.80-69.153622.6BOSTON ENTRANCES40W8N69W94.00-12VARIABLELIGHT BREEZESCLOUDY0000000249948