{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:34.589493", "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": "2026-Apr-28_to_2026-Apr-30_12.5_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": 2026040002854}, "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 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2026"}, "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": 63193.945529344055}, "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": ["Libya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 12.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 10.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 27.53], [10.32, 27.68], [10.35, 27.75], [10.25, 28.0], [10.35, 28.25], [10.25, 28.5], [10.47, 29.03], [11.0, 29.25], [11.25, 29.15], [11.5, 29.25], [12.03, 29.03], [12.18, 28.68], [12.25, 28.65], [12.5, 28.75], [13.03, 28.53], [13.18, 28.18], [13.53, 28.03], [13.75, 27.5], [13.65, 27.25], [13.75, 27.0], [13.53, 26.47], [13.18, 26.32], [13.03, 25.97], [12.5, 25.75], [12.25, 25.85], [12.0, 25.75], [11.75, 25.85], [11.68, 25.82], [11.53, 25.47], [11.0, 25.25], [10.47, 25.47], [10.32, 25.82], [9.97, 25.97], [9.75, 26.5], [9.85, 26.75], [9.75, 27.0], [9.97, 27.53]]]]}, "2026-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 27.53], [10.32, 27.68], [10.35, 27.75], [10.25, 28.0], [10.35, 28.25], [10.25, 28.5], [10.47, 29.03], [11.0, 29.25], [11.25, 29.15], [11.5, 29.25], [12.03, 29.03], [12.18, 28.68], [12.25, 28.65], [12.5, 28.75], [13.03, 28.53], [13.18, 28.18], [13.53, 28.03], [13.75, 27.5], [13.65, 27.25], [13.75, 27.0], [13.53, 26.47], [13.18, 26.32], [13.03, 25.97], [12.5, 25.75], [12.25, 25.85], [12.0, 25.75], [11.75, 25.85], [11.68, 25.82], [11.53, 25.47], [11.0, 25.25], [10.47, 25.47], [10.32, 25.82], [9.97, 25.97], [9.75, 26.5], [9.85, 26.75], [9.75, 27.0], [9.97, 27.53]]]]}, "2026-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 27.53], [10.32, 27.68], [10.35, 27.75], [10.25, 28.0], [10.35, 28.25], [10.25, 28.5], [10.47, 29.03], [11.0, 29.25], [11.25, 29.15], [11.5, 29.25], [12.03, 29.03], [12.18, 28.68], [12.25, 28.65], [12.5, 28.75], [13.03, 28.53], [13.18, 28.18], [13.53, 28.03], [13.75, 27.5], [13.65, 27.25], [13.75, 27.0], [13.53, 26.47], [13.18, 26.32], [13.03, 25.97], [12.5, 25.75], [12.25, 25.85], [12.0, 25.75], [11.75, 25.85], [11.68, 25.82], [11.53, 25.47], [11.0, 25.25], [10.47, 25.47], [10.32, 25.82], [9.97, 25.97], [9.75, 26.5], [9.85, 26.75], [9.75, 27.0], [9.97, 27.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.309803191340791}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.530008825491297}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.571192069675647, 32.18358189679577, 32.43226466524425]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.80005798339846, 33.28658447265627, 33.76868336995443]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.271848420711416, 5.656049664739197, 5.662128391023279]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.036670199191008, 6.309803191340791, 6.253449068183215]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5230184296388614, 1.5936696652778524, 1.5584567445346373]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7120045444157141, 1.8321524729880498, 1.7410232072969223]}}