{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:08.006321", "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-Jul-18_to_2020-Jul-20_23.5_43.5"}, "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": 2020070000714}, "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 18 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 55809.50216104524}, "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": ["Bulgaria", "Romania", "Serbia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "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": 43.5}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[21.25, 44.0], [21.47, 44.53], [21.823, 44.677], [21.97, 45.03], [22.5, 45.25], [22.75, 45.146], [22.823, 45.177], [22.97, 45.53], [23.5, 45.75], [24.03, 45.53], [24.177, 45.177], [24.25, 45.146], [24.5, 45.25], [25.03, 45.03], [25.177, 44.677], [25.53, 44.53], [25.75, 44.0], [25.646, 43.75], [25.75, 43.5], [25.53, 42.97], [25.177, 42.823], [25.03, 42.47], [24.5, 42.25], [24.25, 42.354], [24.0, 42.25], [23.75, 42.354], [23.5, 42.25], [23.25, 42.354], [23.177, 42.323], [23.03, 41.97], [22.5, 41.75], [21.97, 41.97], [21.75, 42.5], [21.854, 42.75], [21.75, 43.0], [21.854, 43.25], [21.823, 43.323], [21.47, 43.47], [21.25, 44.0]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe", "Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[21.82322330470336, 43.32322330470336], [21.46966991411009, 43.46966991411009], [21.25, 44.0], [21.46966991411009, 44.53033008588991], 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[21.82322330470336, 43.32322330470336]]]}, "2020-07-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[21.82322330470336, 43.32322330470336], [21.46966991411009, 43.46966991411009], [21.25, 44.0], [21.46966991411009, 44.53033008588991], [21.82322330470336, 44.67677669529664], [21.96966991411009, 45.03033008588991], [22.5, 45.25], [22.75, 45.14644660940672], [22.82322330470336, 45.17677669529664], [22.96966991411009, 45.53033008588991], [23.5, 45.75], [24.03033008588991, 45.53033008588991], [24.17677669529664, 45.17677669529664], [24.25, 45.14644660940672], [24.5, 45.25], [25.03033008588991, 45.03033008588991], [25.17677669529664, 44.67677669529664], [25.53033008588991, 44.53033008588991], [25.75, 44.0], [25.646446609406727, 43.75], [25.75, 43.5], [25.53033008588991, 42.96966991411009], [25.17677669529664, 42.82322330470336], [25.03033008588991, 42.46966991411009], [24.5, 42.25], [24.25, 42.35355339059328], [24.0, 42.25], [23.75, 42.35355339059328], [23.5, 42.25], [23.25, 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{"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.392638695125584, 14.522944546160659, 15.475465609298396]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.275775196179795, -4.996834430447784, -3.645281741148235]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.395598266832053, -5.99555800860287, -4.150416396823118]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.912336031834343, -1.8600174106964513, -1.3261505958065687]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.321435286618117, -2.310024837736272, -1.5533024947333784]}}