Lesley L. Smith – ExtraTropical Cyclones

All plots preliminary.        

Re. TempestExtremes
Code available here: https://github.com/ClimateGlobalChange/tempestextremes

ExtraTropical Cyclones In general, plots are in reverse temporal order, i.e. most recent at top.

Re. 1990-2015

Criteria: Vorticity > 1.e-5 s-1. Storms must persist for 48 hours and 10° and first point must have lat > 20°.
Below, each color denotes a separate track. Sample track maps:

Annual Track Density map for Vorticity > 1.e-5 s-1 NH ETCs ERA5 data

Lag zero correlations of vorticity and PSL100Pa annual track density maps along year dimension (1990-2015)

Lag zero correlations of vorticity and PSL100Pa annual track density maps along year dimension (2075-2100)

Lag zero correlations of era differences of vorticity and PSL100Pa annual track density maps along year dimension

Sample Annual Track Density map for all Vorticity > 1.e-5 s-1 NH ETCs

Differences of track density maps for all NH ETCs (2075-2100) -- (1990-2015)

Annual Track density maps for all NH ETCs for 1990-2015

Annual Track density cylindrical equidistant maps for all NH ETCs for 1990-2015

Standard deviations of annual track densities for all NH ETCs for 1990-2015

Re. 2075-2100
Sample track map

Annual Track density maps for all NH ETCs for 2075-2100

Annual Track density cylindrical equidistant maps for all NH ETCs for 2075-2100

Standard deviations of annual track densities for all NH ETCs for 2075-2100

Differences of annual track density maps for all NH ETCs (2075-2100) -- (1990-2015)

Differences of standard deviations of annual track densities for all NH ETCs (2075-2100) -- (1990-2015)