{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:23.193740", "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": "2023-Sep-14_to_2023-Sep-17_24.0_35.0"}, "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": 2023090001463}, "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": "September 14 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2023"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 72308.6721292409}, "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": ["Greece"]}, "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": ["Herodotus Basin", "Mediterranean 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": 35.0}, "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": 24.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[24.0, 35.75], [24.25, 35.65], [24.5, 35.75], [25.03, 35.53], [25.18, 35.18], [25.25, 35.15], [25.32, 35.18], [25.47, 35.53], [26.0, 35.75], [26.53, 35.53], [26.75, 35.0], [26.65, 34.75], [26.68, 34.68], [27.03, 34.53], [27.18, 34.18], [27.53, 34.03], [27.68, 33.68], [28.03, 33.53], [28.18, 33.18], [28.53, 33.03], [28.68, 32.68], [29.03, 32.53], [29.25, 32.0], [29.15, 31.75], [29.25, 31.5], [29.03, 30.97], [28.5, 30.75], [28.25, 30.85], [28.0, 30.75], [27.47, 30.97], [27.32, 31.32], [27.25, 31.35], [27.0, 31.25], [26.47, 31.47], [26.32, 31.82], [25.97, 31.97], [25.75, 32.5], [25.85, 32.75], [25.82, 32.82], [25.75, 32.85], [25.5, 32.75], [24.97, 32.97], [24.82, 33.32], [24.47, 33.47], [24.32, 33.82], [23.97, 33.97], [23.82, 34.32], [23.47, 34.47], [23.25, 35.0], [23.47, 35.53], [24.0, 35.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.0, 34.25], [23.47, 34.47], [23.25, 35.0], [23.47, 35.53], [24.0, 35.75], [24.25, 35.65], [24.5, 35.75], [25.03, 35.53], [25.18, 35.18], [25.25, 35.15], [25.32, 35.18], [25.47, 35.53], [26.0, 35.75], [26.53, 35.53], [26.75, 35.0], [26.65, 34.75], [26.68, 34.68], [27.03, 34.53], [27.25, 34.0], [27.13, 33.7], [27.53, 33.53], [27.75, 33.0], [27.53, 32.47], [27.0, 32.25], [26.47, 32.47], [26.25, 33.0], [26.38, 33.3], [26.25, 33.35], [26.0, 33.25], [25.75, 33.35], [25.5, 33.25], [25.25, 33.35], [25.0, 33.25], [24.47, 33.47], [24.25, 34.0], [24.35, 34.25], [24.32, 34.32], [24.25, 34.35], [24.0, 34.25]]]]}, "2023-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, 34.47], [23.25, 35.0], [23.47, 35.53], [24.0, 35.75], [24.25, 35.65], [24.5, 35.75], [25.03, 35.53], [25.18, 35.18], [25.25, 35.15], [25.32, 35.18], [25.47, 35.53], [26.0, 35.75], [26.53, 35.53], [26.75, 35.0], [26.65, 34.75], [26.68, 34.68], [27.03, 34.53], [27.18, 34.18], [27.53, 34.03], [27.68, 33.68], [28.03, 33.53], [28.18, 33.18], [28.53, 33.03], [28.68, 32.68], [29.03, 32.53], [29.25, 32.0], [29.15, 31.75], [29.25, 31.5], [29.03, 30.97], [28.5, 30.75], [28.25, 30.85], [28.0, 30.75], [27.47, 30.97], [27.32, 31.32], [27.25, 31.35], [27.0, 31.25], [26.47, 31.47], [26.32, 31.82], [25.97, 31.97], [25.75, 32.5], [25.85, 32.75], [25.82, 32.82], [25.75, 32.85], [25.5, 32.75], [24.97, 32.97], [24.82, 33.32], [24.47, 33.47], [24.32, 33.82], [23.97, 33.97], [23.82, 34.32], [23.47, 34.47]]]]}, "2023-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, 34.47], [23.25, 35.0], [23.47, 35.53], [24.0, 35.75], [24.25, 35.65], [24.5, 35.75], [25.03, 35.53], [25.18, 35.18], [25.25, 35.15], [25.32, 35.18], [25.47, 35.53], [26.0, 35.75], [26.53, 35.53], [26.75, 35.0], [26.65, 34.75], [26.68, 34.68], [27.03, 34.53], [27.18, 34.18], [27.53, 34.03], [27.68, 33.68], [28.03, 33.53], [28.18, 33.18], [28.53, 33.03], [28.68, 32.68], [29.03, 32.53], [29.25, 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"description": "The daily evolution of mean t2m anomalies.", "value": [1.3323040191157196, 1.4831300651556347, 1.6880949455414, 1.6510652551279106]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6115346112430302, 2.3490684197735163, 2.5971187818362296, 2.3621072001883476]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3186798331487977, 1.556584178438704, 1.821922810822062, 1.7807868540920164]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4422946412040458, 2.1549330165532505, 2.4039300751965955, 2.190823826490234]}}