{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:00.367404", "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": "2020-Aug-05_to_2020-Aug-08_20.5_40.0"}, "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": 2020080000257}, "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": "August 05 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 08 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 68203.5264849193}, "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": ["Albania", "Greece", "North Macedonia", "Serbia"]}, "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": ["Ionian Sea"]}, "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": 40.0}, "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": 20.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.25, 39.0], [22.47, 39.53], [23.0, 39.75], [23.53, 39.53], [23.75, 39.0], [23.53, 38.47], [23.0, 38.25], [22.47, 38.47], [22.25, 39.0]]], [[[19.5, 41.25], [19.75, 41.15], [20.0, 41.25], [20.53, 41.03], [20.68, 40.68], [21.03, 40.53], [21.25, 40.0], [21.03, 39.47], [20.5, 39.25], [20.25, 39.35], [20.0, 39.25], [19.47, 39.47], [19.32, 39.82], [18.97, 39.97], [18.75, 40.5], [18.97, 41.03], [19.5, 41.25]]], [[[21.75, 40.5], [21.97, 41.03], [22.5, 41.25], [23.03, 41.03], [23.25, 40.5], [23.03, 39.97], [22.5, 39.75], [21.97, 39.97], [21.75, 40.5]]], [[[19.82, 42.68], [19.97, 43.03], [20.5, 43.25], [20.75, 43.15], [21.0, 43.25], [21.53, 43.03], [21.75, 42.5], [21.53, 41.97], [21.18, 41.82], [21.03, 41.47], [20.5, 41.25], [20.25, 41.35], [20.0, 41.25], [19.47, 41.47], [19.25, 42.0], [19.47, 42.53], [19.82, 42.68]]]]}, "2020-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, 40.5], [18.97, 41.03], [19.5, 41.25], [19.75, 41.15], [20.0, 41.25], [19.47, 41.47], [19.25, 42.0], [19.47, 42.53], [19.82, 42.68], [19.97, 43.03], 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"description": "The daily evolution of mean t2m anomalies.", "value": [-3.2821562770392405, -4.8234296214940775, -4.164639200254445, -3.4844494323021293]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.464544011358726, -6.917316901724405, -6.725976963161827, -4.8337830950557645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4580811187641327, -2.133682209132243, -1.8485695078399786, -1.5774487884523458]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7452234159450752, -2.6657969574315277, -2.346247446143823, -2.055581651764864]}}