{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:10.775455", "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-29_to_2026-Apr-02_48.5_-25.0"}, "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": 2026030002345}, "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 29 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 02 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 147573.53297293716}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "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": ["Indian Ocean"]}, "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": -25.0}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.5, -24.25], [47.75, -24.35], [48.0, -24.25], [48.25, -24.35], [48.5, -24.25], [48.75, -24.35], [49.0, -24.25], [49.53, -24.47], [49.75, -25.0], [49.53, -25.53], [49.0, -25.75], [48.75, -25.65], [48.5, -25.75], [48.25, -25.65], [48.0, -25.75], [47.75, -25.65], [47.68, -25.68], [47.53, -26.03], [47.0, -26.25], [46.47, -26.03], [46.25, -25.5], [46.47, -24.97], [46.82, -24.82], [46.97, -24.47], [47.5, -24.25]]]]}, "2026-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.75, -24.5], [46.85, -24.25], [46.75, -24.0], [46.85, -23.75], [46.75, -23.5], [46.85, -23.25], [46.75, -23.0], [46.97, -22.47], [47.32, -22.32], [47.47, -21.97], [47.82, -21.82], [47.85, -21.75], [47.75, -21.5], [47.85, -21.25], [47.75, -21.0], [47.97, -20.47], [48.32, -20.32], [48.35, -20.25], [48.25, -20.0], [48.35, -19.75], [48.25, -19.5], [48.47, -18.97], [49.0, -18.75], [49.25, -18.85], [49.5, -18.75], [50.03, -18.97], [50.25, -19.5], [50.15, -19.75], [50.25, -20.0], [50.15, -20.25], [50.25, -20.5], [50.15, -20.75], [50.25, -21.0], [50.15, -21.25], [50.25, -21.5], [50.15, -21.75], [50.25, -22.0], [50.15, -22.25], [50.25, -22.5], [50.15, -22.75], [50.25, -23.0], [50.15, -23.25], [50.25, -23.5], [50.15, -23.75], [50.25, -24.0], [50.15, -24.25], [50.25, -24.5], [50.15, -24.75], [50.25, -25.0], [50.03, -25.53], [49.68, -25.68], [49.53, -26.03], [49.18, -26.18], [49.03, -26.53], [48.68, -26.68], [48.53, -27.03], [48.0, -27.25], [47.75, -27.15], [47.5, -27.25], [46.97, -27.03], [46.75, -26.5], [46.88, -26.2], [46.47, -26.03], [46.25, -25.5], [46.47, -24.97], [46.82, -24.82], [46.85, -24.75], [46.75, -24.5]]]]}, "2026-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.75, -24.5], [46.85, -24.25], [46.75, -24.0], [46.85, -23.75], [46.75, -23.5], [46.85, -23.25], [46.75, -23.0], [46.97, -22.47], [47.32, -22.32], [47.47, -21.97], [47.82, -21.82], [47.85, -21.75], [47.75, -21.5], [47.85, -21.25], [47.75, -21.0], [47.97, -20.47], [48.32, -20.32], [48.35, -20.25], [48.25, -20.0], [48.35, -19.75], [48.25, -19.5], [48.47, -18.97], [49.0, -18.75], [49.25, -18.85], [49.5, -18.75], [50.03, -18.97], [50.25, -19.5], [50.15, -19.75], [50.25, -20.0], [50.15, -20.25], [50.25, -20.5], [50.15, -20.75], [50.25, -21.0], [50.15, -21.25], [50.25, -21.5], [50.15, -21.75], [50.25, -22.0], [50.15, -22.25], [50.25, -22.5], [50.15, -22.75], [50.25, -23.0], [50.15, -23.25], [50.25, -23.5], [50.15, -23.75], [50.25, -24.0], [50.15, -24.25], [50.25, -24.5], [50.15, -24.75], [50.25, -25.0], [50.03, -25.53], [49.68, -25.68], [49.53, -26.03], [49.18, -26.18], [49.03, -26.53], [48.68, -26.68], [48.53, -27.03], [48.0, -27.25], [47.75, -27.15], [47.5, -27.25], [46.97, -27.03], [46.75, -26.5], [46.88, -26.2], [46.47, -26.03], [46.25, -25.5], [46.47, -24.97], [46.82, -24.82], [46.85, -24.75], [46.75, -24.5]]]]}, "2026-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, -23.75], [46.75, -23.5], [46.85, -23.25], [46.75, -23.0], [46.97, -22.47], [47.32, -22.32], [47.47, -21.97], [47.82, -21.82], [47.85, -21.75], [47.75, -21.5], [47.85, -21.25], [47.75, -21.0], [47.97, -20.47], [48.32, -20.32], [48.35, -20.25], [48.25, -20.0], [48.35, -19.75], [48.25, -19.5], [48.47, -18.97], [49.0, -18.75], [49.25, -18.85], [49.5, -18.75], [50.03, -18.97], [50.25, -19.5], [50.15, -19.75], [50.25, -20.0], [50.15, -20.25], [50.25, -20.5], [50.15, -20.75], [50.25, -21.0], [50.15, -21.25], [50.25, -21.5], [50.15, -21.75], [50.25, -22.0], [50.15, -22.25], [50.25, -22.5], [50.15, -22.75], [50.25, -23.0], [50.15, -23.25], [50.25, -23.5], [50.15, -23.75], [50.25, -24.0], [50.15, -24.25], [50.25, -24.5], [50.15, -24.75], [50.25, -25.0], [50.03, -25.53], [49.68, -25.68], [49.53, -26.03], [49.18, -26.18], [49.03, -26.53], [48.68, -26.68], [48.53, -27.03], [48.0, -27.25], [47.75, -27.15], [47.5, -27.25], [46.97, -27.03], [46.75, -26.5], [46.97, -25.97], [47.32, -25.82], [47.35, -25.75], [47.25, -25.5], [47.35, -25.25], [47.32, -25.18], [46.97, -25.03], [46.75, -24.5], [46.85, -24.25], [46.75, -24.0], [46.85, -23.75]]]]}, "2026-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.5, -18.75], [50.03, -18.97], [50.25, -19.5], [50.03, -20.03], [49.5, -20.25], [48.97, -20.03], [48.75, -19.5], [48.97, -18.97], [49.5, -18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.5153313952196754}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5074951784496242}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.60868352254232, 27.17779879447744, 27.182257784329977, 26.98034454345708, 27.004383341471396]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.81644719441732, 27.618733978271507, 27.77422993977865, 27.42577260335287, 27.004383341471396]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0943793422610497, 1.5573518096829833, 1.5933584116790092, 1.417888680036308, 0.9959663279956317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1710250748042768, 2.136523480545293, 2.5153313952196754, 1.895813523126435, 0.9959663279956317]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.372260595563891, 2.027095857139972, 2.0408774993550143, 1.785985470940114, 1.4025943903349476]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5040099691611566, 2.5065263597221894, 2.7879966284802293, 2.2338545627362505, 1.4025943903349476]}}