{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:51.824739", "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": "2025-Apr-21_to_2025-Apr-23_29.5_27.5"}, "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": 2025040002278}, "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 21 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 2025"}, "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": 110041.54240393903}, "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": ["Egypt"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 27.5}, "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": 29.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 27.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[26.47, 25.53], [26.82, 25.68], [26.85, 25.75], [26.75, 26.0], [26.85, 26.25], [26.75, 26.5], [26.97, 27.03], [27.32, 27.18], [27.35, 27.25], [27.25, 27.5], [27.35, 27.75], [27.25, 28.0], [27.35, 28.25], [27.25, 28.5], [27.47, 29.03], [27.82, 29.18], [27.97, 29.53], [28.32, 29.68], [28.47, 30.03], [29.0, 30.25], [29.25, 30.15], [29.5, 30.25], [29.75, 30.15], [30.0, 30.25], [30.53, 30.03], [30.75, 29.5], [30.54, 29.0], [30.75, 28.5], [30.53, 27.97], [30.18, 27.82], [30.15, 27.75], [30.18, 27.68], [30.53, 27.53], [30.75, 27.0], [30.65, 26.75], [30.75, 26.5], [30.53, 25.97], [30.0, 25.75], [29.5, 25.96], [29.18, 25.82], [29.03, 25.47], [28.68, 25.32], [28.65, 25.25], [28.75, 25.0], [28.65, 24.75], [28.75, 24.5], [28.65, 24.25], [28.75, 24.0], [28.53, 23.47], [28.0, 23.25], [27.75, 23.35], [27.5, 23.25], [26.97, 23.47], [26.75, 24.0], [26.85, 24.25], [26.82, 24.32], [26.47, 24.47], [26.25, 25.0], [26.47, 25.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 24.47], [26.25, 25.0], [26.47, 25.53], [26.82, 25.68], [26.85, 25.75], [26.75, 26.0], [26.85, 26.25], [26.75, 26.5], [26.97, 27.03], [27.32, 27.18], [27.35, 27.25], [27.25, 27.5], [27.35, 27.75], [27.25, 28.0], [27.35, 28.25], [27.25, 28.5], [27.47, 29.03], [27.82, 29.18], [27.97, 29.53], [28.32, 29.68], [28.47, 30.03], [29.0, 30.25], [29.25, 30.15], [29.5, 30.25], [29.75, 30.15], [30.0, 30.25], [30.53, 30.03], [30.75, 29.5], [30.54, 29.0], [30.75, 28.5], [30.53, 27.97], [30.18, 27.82], [30.15, 27.75], [30.18, 27.68], [30.53, 27.53], [30.75, 27.0], [30.65, 26.75], [30.75, 26.5], [30.53, 25.97], [30.0, 25.75], [29.5, 25.96], [29.18, 25.82], [29.03, 25.47], [28.68, 25.32], [28.65, 25.25], [28.75, 25.0], [28.65, 24.75], [28.75, 24.5], [28.65, 24.25], [28.75, 24.0], [28.53, 23.47], [28.0, 23.25], [27.75, 23.35], [27.5, 23.25], [26.97, 23.47], [26.75, 24.0], [26.85, 24.25], [26.82, 24.32], [26.47, 24.47]]]]}, "2025-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 24.47], [26.25, 25.0], [26.47, 25.53], [26.82, 25.68], [26.85, 25.75], [26.75, 26.0], [26.85, 26.25], [26.75, 26.5], [26.97, 27.03], [27.32, 27.18], [27.35, 27.25], [27.25, 27.5], [27.35, 27.75], [27.25, 28.0], [27.35, 28.25], [27.25, 28.5], [27.47, 29.03], [27.82, 29.18], [27.97, 29.53], [28.32, 29.68], [28.47, 30.03], [29.0, 30.25], [29.25, 30.15], [29.5, 30.25], [29.75, 30.15], [30.0, 30.25], [30.53, 30.03], [30.75, 29.5], [30.54, 29.0], [30.75, 28.5], [30.53, 27.97], [30.18, 27.82], [30.15, 27.75], [30.18, 27.68], [30.53, 27.53], [30.75, 27.0], [30.65, 26.75], [30.75, 26.5], [30.53, 25.97], [30.0, 25.75], [29.5, 25.96], [29.18, 25.82], [29.03, 25.47], [28.68, 25.32], [28.65, 25.25], [28.75, 25.0], [28.65, 24.75], [28.75, 24.5], [28.65, 24.25], [28.75, 24.0], [28.53, 23.47], [28.0, 23.25], [27.75, 23.35], [27.5, 23.25], [26.97, 23.47], [26.75, 24.0], [26.85, 24.25], [26.82, 24.32], [26.47, 24.47]]]]}, "2025-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 24.47], [26.25, 25.0], [26.47, 25.53], [26.82, 25.68], [26.85, 25.75], [26.75, 26.0], [26.85, 26.25], [26.75, 26.5], [26.97, 27.03], [27.32, 27.18], [27.35, 27.25], [27.25, 27.5], [27.35, 27.75], [27.25, 28.0], [27.35, 28.25], [27.25, 28.5], [27.47, 29.03], [27.82, 29.18], [27.97, 29.53], [28.32, 29.68], [28.47, 30.03], [29.0, 30.25], [29.25, 30.15], [29.5, 30.25], [29.75, 30.15], [30.0, 30.25], [30.53, 30.03], [30.75, 29.5], [30.54, 29.0], [30.75, 28.5], [30.53, 27.97], [30.18, 27.82], [30.15, 27.75], [30.18, 27.68], [30.53, 27.53], [30.75, 27.0], [30.65, 26.75], [30.75, 26.5], [30.53, 25.97], [30.0, 25.75], [29.5, 25.96], [29.18, 25.82], [29.03, 25.47], [28.68, 25.32], [28.65, 25.25], [28.75, 25.0], [28.65, 24.75], [28.75, 24.5], [28.65, 24.25], [28.75, 24.0], [28.53, 23.47], [28.0, 23.25], [27.75, 23.35], [27.5, 23.25], [26.97, 23.47], [26.75, 24.0], [26.85, 24.25], [26.82, 24.32], [26.47, 24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.638005144544252}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.361600401601686}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.81536407470702, 32.591995747884084, 30.165508015950536]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.738130187988304, 34.084321594238304, 33.522999064127646]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.124949692981412, 9.090110570638629, 6.869740941185013]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.23421797706925, 11.638005144544252, 9.7908148156273]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5339590568956587, 2.3181292033352197, 1.8266142842399282]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7708776954640553, 2.9840309053318226, 2.5072925866255704]}}