These data relate to the paper 'Numerical Simulations of the Impact of the 20 March 2015 eclipse on UK Weather.' by Prof.Peter A. Clark, Department of Meteorology, University of Reading,
to be published in Philosopical Transactions A.

The data were generated using the 'UKV' variable resolution forecast model in precisely the configuration used by the Met Office on the day of the eclipse. The simulations are based on version 9.0 of the Met Office's Unified Model (MetUM http://www.metoffice.gov.uk/research/modelling-systems/unified-model). The precise configuration is designated in the Met Office as 'Parallel Suite 35' (PS35), which includes a new dynamical core (ENDGAME) based upon iterative solution, and a 'blended' version of the boundary-layer scheme (in the high-resolution model), the main impact of which, at these resolutions, is to use horizontal mixing based upon that diagnosed in the vertical direction within the boundary layer.

Two runs were performed (detailed in the paper). Both use initial and boundary conditions used by the 03 UTC run of UKV on 20/03/2015. One run reproduces the operational run, taking no account of the eclipse, the second includes the simulated impact of the eclipse on n incoming solar radiation.

Data from the model have been split into .zip archives containing data from different sections of the model with section number designated 'yy' below.
Section zero (multi-level prognostics) have one file per prognostic variable.
Other sections lump all the data from a section into one zipfile.

s yy i xxx correspond to standard MetUM STASH section and item codes.

Two families of data are available:

20150320T0300Z_ukv_m01s00ixxx.zip and 20150320T0300Z_ukv_m01syy.zip  - data without the impact of the eclipse.
20150320T0300Z_ukv_eclipse__m01s00ixxx.zip and 20150320T0300Z_ukv_eclipse_m01syy.zip - data with the impact of the eclipse.

Each .zip file contains netcdf files of the form 
20150320T0300Z_ukv_m01syyixxx.nc 
or
20150320T0300Z_ukv_eclipse_m01syyixxx.nc
where xxx is the variable id. 

The following variable ids are available:

m01s00
s00i004 THETA AFTER TIMESTEP
s00i010 SPECIFIC HUMIDITY AFTER TIMESTEP
s00i024 SURFACE TEMPERATURE AFTER TIMESTEP
s00i033 OROGRAPHY (/STRAT LOWER BC)
s00i255 EXNER PRESSURE (RHO) AFTER TIMESTEP
s00i407 PRESSURE AT RHO LEVELS AFTER TS
s00i408 PRESSURE AT THETA LEVELS AFTER TS
s00i409 SURFACE PRESSURE AFTER TIMESTEP

m01s03
s03i217 SURFACE SENSIBLE  HEAT FLUX     W/M2
s03i223 SURFACE TOTAL MOISTURE FLUX  KG/M2/S
s03i225 10 METRE WIND U-COMP         B GRID
s03i226 10 METRE WIND V-COMP         B GRID
s03i236 TEMPERATURE AT 1.5M
s03i237 SPECIFIC HUMIDITY  AT 1.5M
s03i304 TURBULENT MIXING HT AFTER B.LAYER m
s03i476 COMBINED BOUNDARY LAYER TYPE

m01s09
s09i202 VERY LOW CLOUD AMOUNT
s09i203 LOW CLOUD AMOUNT
s09i204 MEDIUM CLOUD AMOUNT
s09i205 HIGH CLOUD AMOUNT
s09i210 CLOUD BASE ASL COVER.GT.2.5 OCTA KFT

m01s15
s15i002 U WIND ON MODEL    LEVELS    B GRID
s15i003 V WIND ON MODEL    LEVELS    B GRID

m01s16
s16i222 PRESSURE AT MEAN SEA LEVEL