{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:09.073978", "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": "2022-Mar-25_to_2022-Mar-28_48.5_-18.5"}, "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": 2022030002559}, "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 25 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 28 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 72693.77379877926}, "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"]}, "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": -18.5}, "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": 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": 47.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[46.85, -20.25], [46.75, -20.0], [46.97, -19.47], [47.32, -19.32], [47.35, -19.25], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5], [47.35, -18.25], [47.25, -18.0], [47.47, -17.47], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [48.75, -17.35], [49.0, -17.25], [49.53, -17.47], [49.75, -18.0], [49.65, -18.25], [49.75, -18.5], [49.65, -18.75], [49.75, -19.0], [49.65, -19.25], [49.75, -19.5], [49.53, -20.03], [49.18, -20.18], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.68, -21.68], [48.53, -22.03], [48.0, -22.25], [47.75, -22.15], [47.5, -22.25], [47.25, -22.15], [47.0, -22.25], [46.47, -22.03], [46.25, -21.5], [46.35, -21.25], [46.25, -21.0], [46.47, -20.47], [46.82, -20.32], [46.85, -20.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, -21.0], [46.47, -20.47], [46.82, -20.32], [46.85, -20.25], [46.75, -20.0], [46.97, -19.47], [47.32, -19.32], [47.35, -19.25], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5], [47.35, -18.25], [47.25, -18.0], [47.47, -17.47], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [48.75, -17.35], [49.0, -17.25], [49.53, -17.47], [49.75, -18.0], [49.65, -18.25], [49.75, -18.5], [49.65, -18.75], [49.75, -19.0], [49.65, -19.25], [49.75, -19.5], [49.53, -20.03], [49.18, -20.18], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.68, -21.68], [48.53, -22.03], [48.0, -22.25], [47.75, -22.15], [47.5, -22.25], [47.25, -22.15], [47.0, -22.25], [46.47, -22.03], [46.25, -21.5], [46.35, -21.25], [46.25, -21.0]]]]}, "2022-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, -21.0], [46.47, -20.47], [46.82, -20.32], [46.85, -20.25], [46.75, -20.0], [46.97, -19.47], [47.32, -19.32], [47.35, -19.25], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5], [47.35, -18.25], [47.25, -18.0], [47.47, -17.47], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [48.75, -17.35], [49.0, -17.25], [49.53, -17.47], [49.75, -18.0], [49.65, -18.25], [49.75, -18.5], [49.65, -18.75], [49.75, -19.0], [49.65, -19.25], [49.75, -19.5], [49.53, -20.03], [49.18, -20.18], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.68, -21.68], [48.53, -22.03], [48.0, -22.25], [47.75, -22.15], [47.5, -22.25], [47.25, -22.15], [47.0, -22.25], [46.47, -22.03], [46.25, -21.5], [46.35, -21.25], [46.25, -21.0]]]]}, "2022-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.25, -21.0], [46.47, -20.47], [46.82, -20.32], [46.85, -20.25], [46.75, -20.0], [46.97, -19.47], [47.32, -19.32], [47.35, -19.25], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5], [47.35, -18.25], [47.25, -18.0], [47.47, -17.47], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [48.75, -17.35], [49.0, -17.25], [49.53, -17.47], [49.75, -18.0], [49.65, -18.25], [49.75, -18.5], [49.65, -18.75], [49.75, -19.0], [49.65, -19.25], [49.75, -19.5], [49.53, -20.03], [49.18, -20.18], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.68, -21.68], [48.53, -22.03], [48.0, -22.25], [47.75, -22.15], [47.5, -22.25], [47.25, -22.15], [47.0, -22.25], [46.47, -22.03], [46.25, -21.5], [46.35, -21.25], [46.25, -21.0]]]]}, "2022-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.25, -18.5], [47.35, -18.25], [47.25, -18.0], [47.47, -17.47], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [48.75, -17.35], [49.0, -17.25], [49.53, -17.47], [49.75, -18.0], [49.65, -18.25], [49.75, -18.5], [49.53, -19.03], [49.18, -19.18], [49.03, -19.53], [48.5, -19.75], [48.25, -19.65], [48.0, -19.75], [47.47, -19.53], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.444535026178471}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7328059660269137}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.240291245290507, 24.261151526359072, 24.05426990753773, 23.55190584976401]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.521342863440054, 27.354937469686718, 27.121447917620856, 25.72975143039821]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7673111992123791, 1.8092827449298126, 1.6245840506277158, 1.7241806638732697]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.261974504743989, 2.444535026178471, 2.005824375074212, 1.9398925707463945]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8611937758702848, 1.882329254841954, 1.667456725707921, 1.6956546766194986]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5600733435855507, 2.40911265181651, 2.054890113242608, 1.983886208958189]}}