{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:45.799032", "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": "2024-Apr-28_to_2024-Apr-30_14.5_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": 2024040001957}, "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": "April 28 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2024"}, "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": "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": 58613.66106825937}, "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": ["Italy"]}, "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": ["Tyrrhenian 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": 14.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.75}, "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": 42.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 42.0], [10.97, 42.53], [11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [13.75, 42.15], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.53, 41.03], [15.68, 40.68], [16.03, 40.53], [16.25, 40.0], [16.03, 39.47], [15.68, 39.32], [15.65, 39.25], [15.75, 39.0], [15.53, 38.47], [15.0, 38.25], [14.75, 38.35], [14.5, 38.25], [13.97, 38.47], [13.82, 38.82], [13.47, 38.97], [13.25, 39.5], [13.35, 39.75], [13.32, 39.82], [12.97, 39.97], [12.82, 40.32], [12.47, 40.47], [12.3, 40.88], [12.0, 40.75], [11.47, 40.97], [11.32, 41.32], [10.97, 41.47], [10.75, 42.0]]]]}, "2024-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 42.0], [10.97, 42.53], [11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [13.75, 42.15], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.53, 41.03], [15.68, 40.68], [16.03, 40.53], [16.25, 40.0], [16.03, 39.47], [15.68, 39.32], [15.65, 39.25], [15.75, 39.0], [15.53, 38.47], [15.0, 38.25], [14.75, 38.35], [14.5, 38.25], [13.97, 38.47], [13.82, 38.82], [13.47, 38.97], [13.25, 39.5], [13.35, 39.75], [13.32, 39.82], [12.97, 39.97], [12.82, 40.32], [12.47, 40.47], [12.3, 40.88], [12.0, 40.75], [11.47, 40.97], [11.32, 41.32], [10.97, 41.47], [10.75, 42.0]]]]}, "2024-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 42.0], [10.97, 42.53], [11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [13.75, 42.15], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.53, 41.03], [15.68, 40.68], [16.03, 40.53], [16.25, 40.0], [16.03, 39.47], [15.68, 39.32], [15.65, 39.25], [15.75, 39.0], [15.53, 38.47], [15.0, 38.25], [14.75, 38.35], [14.5, 38.25], [13.97, 38.47], [13.82, 38.82], [13.47, 38.97], [13.25, 39.5], [13.35, 39.75], [13.32, 39.82], [12.97, 39.97], [12.82, 40.32], [12.47, 40.47], [12.3, 40.88], [12.0, 40.75], [11.47, 40.97], [11.32, 41.32], [10.97, 41.47], [10.75, 42.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.880208625226544}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.7645920271481046}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.960243597750832, 18.893907114008925, 18.807164528808528]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.60217542324807, 19.878592517021445, 19.960444542551556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.290561958843607, 3.1024977458106013, 2.900716376790106]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.4658839453951487, 4.657836478479112, 4.880208625226544]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4184963205435597, 1.9423457546867455, 1.7898418934616322]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.587503050412863, 2.2077935553216226, 2.0874199538820597]}}