{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:27.738428", "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-28_to_2023-Oct-03_19.5_17.0"}, "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": 2023090002088}, "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 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 53347.02778642771}, "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": ["Chad"]}, "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": 17.0}, "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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[19.5, 15.25], [19.25, 15.35], [19.0, 15.25], [18.75, 15.35], [18.5, 15.25], [18.25, 15.35], [18.0, 15.25], [17.75, 15.35], [17.5, 15.25], [16.97, 15.47], [16.82, 15.82], [16.47, 15.97], [16.25, 16.5], [16.47, 17.03], [17.0, 17.25], [17.25, 17.15], [17.32, 17.18], [17.47, 17.53], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.0, 17.54], [19.5, 17.75], [19.75, 17.65], [20.0, 17.75], [20.5, 17.54], [21.0, 17.75], [21.53, 17.53], [21.75, 17.0], [21.53, 16.47], [21.18, 16.32], [21.03, 15.97], [20.5, 15.75], [20.25, 15.85], [20.18, 15.82], [20.03, 15.47], [19.5, 15.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 17.53], [19.5, 17.75], [20.03, 17.53], [20.25, 17.0], [20.03, 16.47], [19.5, 16.25], [18.97, 16.47], [18.75, 17.0], [18.97, 17.53]]]]}, "2023-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 17.53], [19.5, 17.75], [20.03, 17.53], [20.25, 17.0], [20.03, 16.47], [19.5, 16.25], [18.97, 16.47], [18.75, 17.0], [18.97, 17.53]]]]}, "2023-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 15.97], [16.25, 16.5], [16.47, 17.03], [17.0, 17.25], [17.25, 17.15], [17.32, 17.18], [17.47, 17.53], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.0, 17.54], [19.5, 17.75], [19.75, 17.65], [20.0, 17.75], [20.5, 17.54], [21.0, 17.75], [21.53, 17.53], [21.75, 17.0], [21.53, 16.47], [21.18, 16.32], [21.03, 15.97], [20.5, 15.75], [20.25, 15.85], [20.18, 15.82], [20.03, 15.47], [19.5, 15.25], [19.25, 15.35], [19.0, 15.25], [18.75, 15.35], [18.5, 15.25], [18.25, 15.35], [18.0, 15.25], [17.75, 15.35], [17.5, 15.25], [16.97, 15.47], [16.82, 15.82], [16.47, 15.97]]]]}, "2023-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 15.97], [16.25, 16.5], [16.47, 17.03], [17.0, 17.25], [17.25, 17.15], [17.32, 17.18], [17.47, 17.53], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.0, 17.54], [19.5, 17.75], [19.75, 17.65], [20.0, 17.75], [20.5, 17.54], [21.0, 17.75], [21.53, 17.53], [21.75, 17.0], [21.53, 16.47], [21.18, 16.32], [21.03, 15.97], [20.5, 15.75], [20.25, 15.85], [20.18, 15.82], [20.03, 15.47], [19.5, 15.25], [19.25, 15.35], [19.0, 15.25], [18.75, 15.35], [18.5, 15.25], [18.25, 15.35], [18.0, 15.25], [17.75, 15.35], [17.5, 15.25], [16.97, 15.47], [16.82, 15.82], [16.47, 15.97]]]]}, "2023-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 15.97], [16.25, 16.5], [16.47, 17.03], [17.0, 17.25], [17.25, 17.15], [17.32, 17.18], [17.47, 17.53], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.0, 17.54], [19.5, 17.75], [19.75, 17.65], [20.0, 17.75], [20.5, 17.54], [21.0, 17.75], [21.53, 17.53], [21.75, 17.0], [21.53, 16.47], [21.18, 16.32], [21.03, 15.97], [20.5, 15.75], [20.25, 15.85], [20.18, 15.82], [20.03, 15.47], [19.5, 15.25], [19.25, 15.35], [19.0, 15.25], [18.75, 15.35], [18.5, 15.25], [18.25, 15.35], [18.0, 15.25], [17.75, 15.35], [17.5, 15.25], [16.97, 15.47], [16.82, 15.82], [16.47, 15.97]]]]}, "2023-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 16.53], [19.5, 16.75], [20.03, 16.53], [20.25, 16.0], [20.03, 15.47], [19.5, 15.25], [18.97, 15.47], [18.75, 16.0], [18.97, 16.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.925192414073308}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2264751722139113}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.913974301200994, 33.93808689717872, 34.15428458638826, 34.340851422342666, 34.37448504626656, 33.65725727715113]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.913974301200994, 33.93808689717872, 35.72157410289691, 35.706315239034154, 34.89949148123566, 33.65725727715113]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.72905436542527, 1.887349055773086, 2.0238437761003922, 2.2946584338438325, 2.378658691365053, 1.7437851714275894]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.72905436542527, 1.887349055773086, 2.6495920993756386, 2.925192414073308, 2.786282253133379, 1.7437851714275894]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.9349425726734373, 1.2644784982540611, 1.3959988597127633, 1.5090233153196406, 1.583326362204292, 1.1974151041337178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9349425726734373, 1.2644784982540611, 1.8049434851024881, 1.7701641487777682, 2.0059020188744445, 1.1974151041337178]}}