García-Herrera, Ricardo; Können, Gunther P; Wheeler, Dennis A; Prieto, Maria del Rosario; Jones, Philip D; Koek, Frits B (2010): Meteorological observations during DREGTERLANDT cruise from Kaap de Goede Hoop to Amsterdam started at 1794-04-20 [dataset]. Maritiem Museum Rotterdam, Netherland, PANGAEA, https://doi.org/10.1594/PANGAEA.748680, 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
Always quote citation above when using data! You can download the citation in several formats below.
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
Project(s):
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00090: Climatological Database for the Worlds Oceans: 1750-1854
Coverage:
Median Latitude: 20.028958 * Median Longitude: -17.430729 * South-bound Latitude: -32.370000 * West-bound Longitude: -36.730000 * North-bound Latitude: 60.520000 * East-bound Longitude: 16.570000
Date/Time Start: 1794-04-20T00:00:00 * Date/Time End: 1794-08-02T00:00:00
Event(s):
Dregterlandt_17940420_MMR_VOC_H475 * Latitude Start: -34.080000 * Longitude Start: 17.820000 * Latitude End: 52.900000 * Longitude End: 4.100000 * Date/Time Start: 1794-04-20T00:00:00 * Date/Time End: 1794-08-02T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Dregterlandt, Voyage: Kaap De Goede Hoop - Amsterdam, 1st Observer: Jacobus Arkenbout (Ktz), 2nd Observer: Cornelis Van Eps (Schipper), Company: VOC, Other ship information: GEBOUWD IN 1784 TE HOORN, LAADVERMOGEN 1150 TON, LENGTE 150 VOET. BEWAPEND MET 18 STUKKEN VAN 8 POND, 6 4-PONDERS EN 2 METALEN DRAAIBASSEN.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Geocode | |||
| 2 | LATITUDE | Latitude | Geocode | |||
| 3 | LONGITUDE | Longitude | Geocode | |||
| 4 | Wind direction | dd | deg | Wind 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. | ||
| 5 | Wind speed | ff | m/s | calculated from the descriptive terms of wind force given in the observations | ||
| 6 | Landmark | Landmark | Name of first landmark | |||
| 7 | Bearing | Bearing | Bearing of the first landmark | |||
| 8 | Distance to landmark | Distance | arbitrary units | Distance to the first landmark | ||
| 9 | Landmark | Landmark | Name of second landmark | |||
| 10 | Bearing | Bearing | Bearing of the second landmark | |||
| 11 | - | - | 1 If position is considered to be coastal (in port or near coastal disturbances) | |||
| 12 | Watch | Watch | Name of the period of 4 hours which is known as a watch or duty on board ships | |||
| 13 | Glasses | Glasses | Number of glasses within a watch; one watch equals 8 glasses | |||
| 14 | Course | Course | Course of the ship during the past 24 hours | |||
| 15 | Distance | Distance | arbitrary units | Distance travelled during the previous 24 hours | ||
| 16 | Comment | Comment | Other remarks, that were not possible to put in the other remark fields | |||
| 17 | Declination | Decl | deg | It 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. | ||
| 18 | Wind direction description | Wind dir descr | All reported wind directions on this day. The wind direction is the direction that points to where the wind comes from. | |||
| 19 | Wind force description | Wind force descr | All reported wind forces on this day | |||
| 20 | Present weather | ww | Weather description | |||
| 21 | Precipitation description | Precip descr | ||||
| 22 | State of the sea description | State sea descr | ||||
| 23 | Cloud type | Cloud type | ||||
| 24 | Clearness | Clearness | ||||
| 25 | Gusts | Gusts | 1 If wind gusts are reported | |||
| 26 | Precipitation/Rain | Rain | 1 If rain was reported | |||
| 27 | Fog | Fog | 1 If fog was reported | |||
| 28 | Snow type | Snow | 1 If snow was reported | |||
| 29 | Thunder | Thunder | 1 If thunder and or lightning was reported | |||
| 30 | Hail | Hail | 1 If hail was reported | |||
| 31 | Sea ice | Sea ice | 1 If sea-ice or icebergs were reported | |||
| 32 | Comment | Comment | ||||
| 33 | Identification | ID | CLIWOC 2.1 line number |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1867 data points