Storms.ERA40 {cyclones} | R Documentation |
Counts of low-pressure systems every 12hr over the North Atlantic region (00.00 and 12.00 UTC), derived from the NMC (now National Centers for Environmental Prediction, NCEP, http://www.ncep.noaa.gov/) or ECMWF re-analysis ERA40 6-hr or 24-hr slp fields ('x1' is once a day).
data(Storms.ERA40) data(Storms.ERA40x1) data(Storms.NMC)
'Storms.ERA40' - a list of lon (longitude in degrees), lat (latitude in
degrees), psl (central sea level pressure in hPa), yy (year), mm (month), dd (day),
max.dpsl (max pressure gradient), tim (time index),
max.speed (estimated maximum geostropic speed), radius (radius of low
pressure system in km), rad.max.dpsl, dx, dy, version, scale.factor.x, scale.factor.y.
'storms' - a list of lon, lat, psl, yy, mm, dd. See CCI
.
The Norwegian Meteorological Institute, Climatology division.
EMS04-A-00146, Benestad, R.E.; Sorteberg, A.; Chen, D. 'Storm statistics derived using a calculus-based cyclone identification method', http://www.cosis.net/members/meetings/sessions/oral_programme.php?p_id=110&s_id=1845, European Meteorological Society AC2, Nice, Sept 28, 2004.