{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:48.481494", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2014-Jul-07_to_2014-Jul-12_358.5_41.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2014070000416}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 07 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 78832.65299890644}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["France", "Spain"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 41.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 358.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 354.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.03, 42.53], [-1.68, 42.68], [-1.53, 43.03], [-1.0, 43.25], [-0.75, 43.15], [-0.68, 43.18], [-0.53, 43.53], [0.0, 43.75], [0.53, 43.53], [0.75, 43.0], [0.65, 42.75], [0.75, 42.5], [0.54, 42.0], [0.75, 41.5], [0.53, 40.97], [0.18, 40.82], [0.03, 40.47], [-0.5, 40.25], [-1.0, 40.46], [-1.5, 40.25], [-2.03, 40.47], [-2.25, 41.0], [-2.04, 41.5], [-2.25, 42.0], [-2.03, 42.53]]]]}, "2014-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.03, 42.53], [-1.68, 42.68], [-1.53, 43.03], [-1.0, 43.25], [-0.75, 43.15], [-0.68, 43.18], [-0.53, 43.53], [0.0, 43.75], [0.53, 43.53], [0.75, 43.0], [0.65, 42.75], [0.75, 42.5], [0.54, 42.0], [0.75, 41.5], [0.53, 40.97], [0.18, 40.82], [0.03, 40.47], [-0.5, 40.25], [-1.0, 40.46], [-1.5, 40.25], [-2.03, 40.47], [-2.25, 41.0], [-2.04, 41.5], [-2.25, 42.0], [-2.03, 42.53]]]]}, "2014-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.5, 42.25], [-4.25, 42.15], [-4.18, 42.18], [-4.03, 42.53], [-3.5, 42.75], [-3.25, 42.65], [-3.0, 42.75], [-2.75, 42.65], [-2.5, 42.75], [-2.0, 42.54], [-1.68, 42.68], [-1.53, 43.03], [-1.0, 43.25], [-0.75, 43.15], [-0.68, 43.18], [-0.53, 43.53], [0.0, 43.75], [0.53, 43.53], [0.75, 43.0], [0.65, 42.75], [0.75, 42.5], [0.54, 42.0], [0.75, 41.5], [0.65, 41.25], [0.75, 41.0], [0.53, 40.47], [0.18, 40.32], [0.03, 39.97], [-0.5, 39.75], [-0.75, 39.85], [-1.0, 39.75], [-1.25, 39.85], [-1.5, 39.75], [-1.75, 39.85], [-2.0, 39.75], [-2.25, 39.85], [-2.5, 39.75], [-2.75, 39.85], [-3.0, 39.75], [-3.53, 39.97], [-3.75, 40.5], [-3.65, 40.75], [-3.68, 40.82], [-3.75, 40.85], [-3.82, 40.82], [-3.97, 40.47], [-4.5, 40.25], [-4.75, 40.35], [-5.0, 40.25], [-5.53, 40.47], [-5.75, 41.0], [-5.53, 41.53], [-5.18, 41.68], [-5.03, 42.03], [-4.5, 42.25]]]]}, "2014-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.5, 42.25], [-4.25, 42.15], [-4.18, 42.18], [-4.03, 42.53], [-3.5, 42.75], [-3.25, 42.65], [-3.0, 42.75], [-2.75, 42.65], [-2.5, 42.75], [-2.0, 42.54], [-1.68, 42.68], [-1.53, 43.03], [-1.0, 43.25], [-0.7, 43.12], [-0.53, 43.53], [0.0, 43.75], [0.53, 43.53], [0.75, 43.0], [0.53, 42.47], [0.0, 42.25], [0.53, 42.03], [0.75, 41.5], [0.65, 41.25], [0.75, 41.0], [0.53, 40.47], [0.18, 40.32], [0.03, 39.97], [-0.5, 39.75], [-0.75, 39.85], [-1.0, 39.75], [-1.25, 39.85], [-1.5, 39.75], [-1.75, 39.85], [-2.0, 39.75], [-2.25, 39.85], [-2.5, 39.75], [-2.75, 39.85], [-3.0, 39.75], [-3.53, 39.97], [-3.75, 40.5], [-3.65, 40.75], [-3.68, 40.82], [-3.75, 40.85], [-3.82, 40.82], [-3.97, 40.47], [-4.5, 40.25], [-4.75, 40.35], [-5.0, 40.25], [-5.53, 40.47], [-5.75, 41.0], [-5.53, 41.53], [-5.18, 41.68], [-5.03, 42.03], [-4.5, 42.25]], [[-0.3, 42.38], [-0.35, 42.25], [-0.32, 42.18], [-0.25, 42.15], [0.0, 42.25], [-0.3, 42.38]]]]}, "2014-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.5, 42.25], [-4.25, 42.15], [-4.18, 42.18], [-4.03, 42.53], [-3.5, 42.75], [-3.25, 42.65], [-3.0, 42.75], [-2.75, 42.65], [-2.5, 42.75], [-1.97, 42.53], [-1.82, 42.18], [-1.75, 42.15], [-1.5, 42.25], [-1.25, 42.15], [-1.0, 42.25], [-0.47, 42.03], [-0.32, 41.68], [-0.25, 41.65], [0.0, 41.75], [0.53, 41.53], [0.75, 41.0], [0.53, 40.47], [0.18, 40.32], [0.03, 39.97], [-0.5, 39.75], [-0.75, 39.85], [-1.0, 39.75], [-1.25, 39.85], [-1.5, 39.75], [-1.75, 39.85], [-2.0, 39.75], [-2.25, 39.85], [-2.5, 39.75], [-2.75, 39.85], [-3.0, 39.75], [-3.53, 39.97], [-3.75, 40.5], [-3.65, 40.75], [-3.68, 40.82], [-3.75, 40.85], [-3.82, 40.82], [-3.97, 40.47], [-4.5, 40.25], [-4.75, 40.35], [-5.0, 40.25], [-5.53, 40.47], [-5.75, 41.0], [-5.53, 41.53], [-5.18, 41.68], [-5.03, 42.03], [-4.5, 42.25]]]]}, "2014-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.03, 41.53], [-1.5, 41.75], [-0.97, 41.53], [-0.82, 41.18], [-0.47, 41.03], [-0.25, 40.5], [-0.47, 39.97], [-1.0, 39.75], [-1.25, 39.85], [-1.5, 39.75], [-2.03, 39.97], [-2.25, 40.5], [-2.15, 40.75], [-2.25, 41.0], [-2.03, 41.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.21025376449694}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.479857380083811}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.384645413705925, 17.467998341650798, 16.15630623396021, 15.816249512610113, 16.271180322136672, 15.685067055149887]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.50684247524913, 11.978129337100086, 11.001824519969205, 10.736218304150157, 11.7848173186253, 15.233700288474324]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.330054818127016, -4.328826538281806, -5.381094460238606, -6.0332148620483395, -5.47841655136945, -5.478900326681109]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.00587052160796, -4.871939392026093, -6.3689139724132815, -7.21025376449694, -6.655278583393908, -5.871545437313102]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7645970573567864, -1.4038109916422314, -1.6662368970145602, -1.8406147812426135, -1.6533933615762608, -1.6119807313697851]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9371282947408828, -1.5007938575218742, -1.8372305842060572, -2.0775051158704283, -1.923881455023354, -1.6338783147307323]}}