{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:24.319290", "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-Mar-20_to_2026-Mar-22_5.5_28.5"}, "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": 2026030002121}, "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": "March 20 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 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": 192240.12510233256}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "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": 28.5}, "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": 5.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "5.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 6.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.18, 31.18], [-1.15, 31.25], [-1.25, 31.5], [-1.15, 31.75], 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28.97], [-1.68, 29.32], [-2.03, 29.47], [-2.25, 30.0], [-2.03, 30.53], [-1.68, 30.68], [-1.53, 31.03], [-1.18, 31.18]]]]}, "2026-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.18, 31.18], [-1.15, 31.25], [-1.25, 31.5], [-1.15, 31.75], [-1.25, 32.0], [-1.03, 32.53], [-0.5, 32.75], [-0.25, 32.65], [0.0, 32.75], [0.25, 32.65], [0.5, 32.75], [1.0, 32.54], [1.5, 32.75], [1.75, 32.65], [2.0, 32.75], [2.25, 32.65], [2.5, 32.75], [3.03, 32.53], [3.25, 32.0], [3.15, 31.75], [3.18, 31.68], [3.53, 31.53], [3.68, 31.18], [3.75, 31.15], [4.0, 31.25], [4.25, 31.15], [4.5, 31.25], [5.03, 31.03], [5.18, 30.68], [5.25, 30.65], [5.5, 30.75], [5.75, 30.65], [6.0, 30.75], [6.53, 30.53], [6.68, 30.18], [7.03, 30.03], [7.25, 29.5], [7.03, 28.97], [6.68, 28.82], [6.65, 28.75], [6.75, 28.5], [6.53, 27.97], [6.0, 27.75], [5.75, 27.85], [5.5, 27.75], [5.25, 27.85], [5.0, 27.75], [4.75, 27.85], [4.5, 27.75], [3.97, 27.97], [3.82, 28.32], [3.75, 28.35], [3.5, 28.25], [2.97, 28.47], 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daily evolution of mean t2m.", "value": [23.643752599645552, 24.263597672073956, 23.46737710458268]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.96297098795577, 28.22401072184249, 26.10649770100912]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.876109918637448, 6.156426797410805, 5.0236322995110365]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.3360783324382055, 8.474570173809127, 6.490261492338675]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8776051134967002, 1.913277968283047, 1.518221262246027]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.269870153954405, 2.5003643445960293, 1.8409892987799863]}}