| presenceIce {datana} | R Documentation |
Presence or absence of sea ice from logbook records of annual cruises
Description
Data containing 52717 observations about presence of sea ice from logbook records of annual cruises to the B-C-B in an unbroken record between years 1850 to 1910.
Usage
data(presenceIce)
Format
The data frame contains the following columns:
- ship.id
The code number for ships.
- move.type
Type of movement of ships. 0 indicates a sail-powered vessel and 1 indicates an auxiliary-powered vessel.
- year
Year of registry.
- month
Month of registry.
- day
Day of registry.
- lat.dec
Decimal latitude.
- long.dec
Decimal longitude.
- e.w
East or west of the Prime Meridian.
- ice.cov
Sea Ice Observed. 0 no see (Not registered) and 1 presence sea ice (Registered).
Source
The data were provided from Sea Ice Group at the Geophysical Institute.
References
Mahoney A, Bockstoce J, Botkin D, Eicken H, Nisbet R. 2011. Sea-Ice Distribution in the Bering and Chukchi Seas: Information from Historical Whaleships' Logbooks and Journals ARCTIC. 64(4): 465-477.
Examples
data(presenceIce)
head(presenceIce)