García-Herrera, Ricardo; Können, Gunther P; Wheeler, Dennis A; Prieto, Maria del Rosario; Jones, Philip D; Koek, Frits B (2010): Meteorological observations during ALLIGATOR cruise from Portsmouth to Halifax started at 1791-03-07 [dataset]. National Maritime Museum, Greenwich, United Kingdom, PANGAEA, https://doi.org/10.1594/PANGAEA.747322, 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: 37.695152 * Median Longitude: -42.100000 * South-bound Latitude: 29.620000 * West-bound Longitude: -68.100000 * North-bound Latitude: 48.800000 * East-bound Longitude: -6.330000
Date/Time Start: 1791-03-07T12:00:00 * Date/Time End: 1791-04-15T16:00:00
Event(s):
Alligator_17910307_NMM_ADM/L/A261 * Latitude Start: 50.750000 * Longitude Start: -0.980000 * Latitude End: 43.400000 * Longitude End: -63.030000 * Date/Time Start: 1791-03-07T00:00:00 * Date/Time End: 1791-04-15T00:00:00 * Campaign: Cliwoc_cruise * Method/Device: Underway cruise track measurements (CT) * Comment: Ship: Alligator (6th Rate Frigate), Voyage: Portsmouth - Halifax, 1st Observer: Issac Coffin (Captain), 2nd Observer: William Hotham (1st Officer/Master), Company: Royal Navy, Other ship information: 28G 593BM
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 | Course | Course | Course of the ship during the past 24 hours | |||
| 7 | Distance | Distance | arbitrary units | Distance travelled during the previous 24 hours | ||
| 8 | 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. | ||
| 9 | 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. | |||
| 10 | Wind force description | Wind force descr | All reported wind forces on this day | |||
| 11 | Present weather | ww | Weather description | |||
| 12 | Precipitation description | Precip descr | ||||
| 13 | State of the sea description | State sea descr | ||||
| 14 | Gusts | Gusts | 1 If wind gusts are reported | |||
| 15 | Precipitation/Rain | Rain | 1 If rain was reported | |||
| 16 | Fog | Fog | 1 If fog was reported | |||
| 17 | Snow type | Snow | 1 If snow was reported | |||
| 18 | Thunder | Thunder | 1 If thunder and or lightning was reported | |||
| 19 | Hail | Hail | 1 If hail was reported | |||
| 20 | Sea ice | Sea ice | 1 If sea-ice or icebergs were reported | |||
| 21 | Identification | ID | CLIWOC 2.1 line number |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
525 data points
Data
| 1 Date/Time | 2 Latitude | 3 Longitude | 4 dd [deg] | 5 ff [m/s] | 6 Course | 7 Distance [arbitrary units] | 8 Decl [deg] | 9 Wind dir descr | 10 Wind force descr | 11 ww | 12 Precip descr | 13 State sea descr | 14 Gusts | 15 Rain | 16 Fog | 17 Snow | 18 Thunder | 19 Hail | 20 Sea ice | 21 ID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1791-03-07T12:00 | 48.80 | -6.33 | 291 | 9.3 | S39W | 120.00 | -24 | EBN, NW | CALM, AM FRESH BREEZES | AM CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8221 | ||
| 1791-03-08T13:00 | 45.03 | -8.17 | 78 | 12.3 | S24W | 239.00 | -23 | SE, EBS | STRONG BREEZES, AM STRONG BREEZES | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8222 | ||
| 1791-03-09T13:00 | 42.23 | -9.33 | 103 | 6.7 | S20W | 170.00 | -21 | ESE, SE, SEBE | STRONG BREEZES, AM MODERATE | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8223 | ||
| 1791-03-10T13:00 | 40.50 | -10.92 | 80 | 1.0 | S29W | 139.00 | -21 | EBS | LIGHT AIRS | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8224 | ||
| 1791-03-11T13:00 | 37.88 | -11.22 | 103 | 6.7 | S5W | 157.00 | -21 | SEBE | MODERATE | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8225 | ||
| 1791-03-12T13:00 | 34.97 | -12.35 | 115 | 9.3 | S19W | 168.00 | -20 | ESE, SE | FRESH BREEZES, AM FRESH BREEZES | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8226 | ||
| 1791-03-13T13:00 | 33.57 | -13.62 | 59 | 6.7 | S86W | 107.00 | -20 | EBN | MODERATE, AM MORE MODERATE | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8227 | ||
| 1791-03-21T13:00 | 31.05 | -19.20 | 118 | 1.0 | S40W | 119.00 | -17 | SE | FRESH BREEZES, AM LIGHT AIRS | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8228 | |||
| 1791-03-22T14:00 | 29.62 | -23.03 | 74 | 9.3 | S67W | 216.00 | -16 | E | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8229 | ||
| 1791-03-23T14:00 | 30.27 | -26.83 | 29 | 9.3 | N80W | 222.00 | -16 | NE | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8230 | ||
| 1791-03-24T14:00 | 31.50 | -30.33 | 31 | 9.3 | N66W | 191.00 | -14 | NE | FRESH BREEZES | SQUALLY WEATHER | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 8231 | ||
| 1791-03-25T14:00 | 32.43 | -33.70 | 33 | 9.3 | N69W | 192.00 | -13 | NE | FRESH BREEZES | SQUALLY WEATHER | AM A HEAVY SWELL FROM THE NE | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8232 | |
| 1791-03-26T14:00 | 34.00 | -36.50 | 30 | 9.3 | N60W | 190.00 | -15 | NE | FRESH BREEZES | SQUALLY WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8233 | ||
| 1791-03-27T15:00 | 34.60 | -39.78 | 99 | 9.3 | N75W | 170.00 | -14 | ESE | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8234 | ||
| 1791-03-28T15:00 | 35.38 | -40.67 | 76 | 9.3 | N64W | 89.00 | -14 | E | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8235 | ||
| 1791-03-29T15:00 | 36.18 | -42.33 | 31 | 6.7 | N66W | 174.00 | -14 | NE | MODERATE BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8236 | ||
| 1791-03-30T15:00 | 37.00 | -45.00 | 89 | 9.3 | N71W | 161.00 | -12 | EBS | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8237 | ||
| 1791-03-31T15:00 | 37.87 | -48.17 | 120 | 9.3 | N72W | 171.00 | -15 | SE | FRESH BREEZES | CLOUDY | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8238 | ||
| 1791-04-01T15:00 | 38.17 | -52.33 | 120 | 0.0 | N83W | 162.00 | -15 | SE | FRESH GALES AND SQUALLY, AT 8 CALM | RAIN, AT 8 HEAVY RAIN | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8239 | ||
| 1791-04-02T15:00 | 37.87 | -52.33 | 300 | 2.6 | S | 21.00 | -15 | NW | LIGHT BREEZES | RAIN | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8240 | ||
| 1791-04-03T16:00 | 37.87 | -53.33 | 302 | 6.7 | S45W | 50.00 | -13 | NW | MODERATE BREEZES | RAIN | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8241 | ||
| 1791-04-04T16:00 | 38.86 | -53.33 | 302 | 0.0 | N | 58.00 | -13 | NW | FRESH BREEZES AND SQUALLY, AT NOON CALM | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8242 | |||
| 1791-04-05T16:00 | 37.27 | -57.38 | 306 | 6.7 | S79W | 108.00 | -9 | NW | MODERATE BREEZES | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8243 | |||
| 1791-04-06T16:00 | 37.68 | -61.07 | 304 | 9.3 | N80W | 141.00 | -11 | NW | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8244 | ||
| 1791-04-07T16:00 | 37.50 | -64.48 | 306 | 9.3 | W | 104.00 | -9 | NW | FRESH BREEZES | CLOUDY WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8245 | ||
| 1791-04-08T16:00 | 38.15 | -66.60 | 36 | 12.3 | N60W | 67.00 | -9 | NE | MODERATE, AT 9 STRONG BREEZES | CLOUDY AND SQUALLY | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 8246 | ||
| 1791-04-09T17:00 | 38.78 | -67.93 | 39 | 19.0 | N54W | 67.00 | -6 | NE | FRESH GALES | RAIN | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 8247 | ||
| 1791-04-10T17:00 | 39.23 | -68.10 | 17 | 9.3 | N12W | 27.00 | -6 | NNE | FRESH BREEZES | CLOUDY WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8248 | ||
| 1791-04-11T17:00 | 39.68 | -67.68 | 354 | 9.3 | N20E | 24.00 | -6 | N | FRESH BREEZES | CLEAR WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8249 | ||
| 1791-04-12T16:00 | 41.30 | -67.27 | 329 | 1.0 | N11E | 102.00 | -9 | NNW | LIGHT AIRS | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8250 | |||
| 1791-04-13T16:00 | 42.42 | -67.27 | 216 | 9.3 | N | 67.00 | -9 | SW | FRESH BREEZES | HAZY WEATHER | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8251 | ||
| 1791-04-14T16:00 | 42.43 | -65.85 | 171 | 9.3 | E | 62.00 | -9 | S | FRESH BREEZES | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8252 | ||
| 1791-04-15T16:00 | 43.85 | -66.87 | 234 | 9.3 | N80W | 99.00 | -14 | WSW | FRESH BREEZES | CLEAR | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8253 |