Field

HadSST4000 SSTa
Ensemble-median sea-surface temperature anomalies from the HadSST.4.0.0.0 data set
X axis: whole world in 72 5.00° steps, first point at 177.50° W, last point at 177.50° E
Y axis: regular grid with 36 5.00° steps, first point at 87.50° S, last point at 87.50° N

Monthly data available from Jan1850 to Jan2021 (2053 months)
Variable tos (Sea water temperature anomaly at a depth of 20cm) in K
Full metadata.

Get grid points, average area or generate subset

Mask:	no mask mask15.txt   add a mask to the list
Latitude:	°N - °N
Longitude:	°E - °E
Boundaries:	halfway grid points interpolated
Make:	average max min set of grid points subset of the field
Demand at least:	% valid points in this region
Units:	convert to Celsius leave in K

Create a field with lower time resolution

New time scale:	annual (Jul-Jun) annual (Jan-Dec) biannual seasonal
New variable:	mean sd sum sum above sum below number min time of min max time of max first time last time of SSTa
Threshold:	no cut less than greater than K percentile normal 1971-2000
Minimum:	% valid data
First apply:	-month running mean
Missing data:	ignore, climatology, trend, persistence.

Create a field with lower spatial resolution

Average over blocks of longitude and latitude grid cells

Construct a statistical forecast model from this field

Compute expected number of Atlantic hurricanes

(c) Crown copyright 2006, data supplied by the Met Office. The UKMO license does not allow us to redistribute this file. Please consult their website for further information.