{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:54.348053", "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-06_to_2022-Mar-11_46.5_-21.0"}, "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": 2022030001598}, "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 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 2022"}, "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": 81070.53730351484}, "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": []}, "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": -21.0}, "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": 46.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 43.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.0}, "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": -18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[44.0, -19.46], [44.5, -19.25], [44.75, -19.35], [45.0, -19.25], [45.25, -19.35], [45.5, -19.25], [45.93, -19.43], [45.75, -19.0], [45.85, -18.75], [45.75, -18.5], [45.97, -17.97], [46.5, -17.75], [47.03, -17.97], [47.18, -18.32], [47.53, -18.47], [47.75, -19.0], [47.65, -19.25], [47.75, -19.5], [47.65, -19.75], [47.75, -20.0], [47.53, -20.53], [47.18, -20.68], [47.15, -20.75], [47.25, -21.0], [47.15, -21.25], [47.25, -21.5], [47.03, -22.03], [46.5, -22.25], [46.25, -22.15], [46.0, -22.25], [45.75, -22.15], [45.5, -22.25], [45.25, -22.15], [45.0, -22.25], [44.75, -22.15], [44.5, -22.25], [44.25, -22.15], [44.0, -22.25], [43.47, -22.03], [43.25, -21.5], [43.38, -21.2], [42.97, -21.03], [42.75, -20.5], [42.85, -20.25], [42.75, -20.0], [42.97, -19.47], [43.5, -19.25], [44.0, -19.46]]]]}}, "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": {"2022-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.97, -20.53], [42.75, -20.0], [42.97, -19.47], [43.5, -19.25], [44.03, -19.47], [44.18, -19.82], [44.53, -19.97], [44.75, -20.5], [44.53, -21.03], [44.0, -21.25], [43.47, -21.03], [43.32, -20.68], [42.97, -20.53]]]]}, "2022-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.75, -20.0], [42.97, -19.47], [43.5, -19.25], [44.03, -19.47], [44.18, -19.82], [44.53, -19.97], [44.75, -20.5], [44.53, -21.03], [44.0, -21.25], [43.75, -21.15], [43.5, -21.25], [42.97, -21.03], [42.75, -20.5], [42.85, -20.25], [42.75, -20.0]]]]}, "2022-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.75, -20.0], [42.97, -19.47], [43.5, -19.25], [44.0, -19.46], [44.5, -19.25], [44.75, -19.35], [45.0, -19.25], [45.25, -19.35], [45.5, -19.25], [46.0, -19.46], [46.5, -19.25], [47.03, -19.47], [47.25, -20.0], [47.15, -20.25], [47.25, -20.5], [47.15, -20.75], [47.25, -21.0], [47.15, -21.25], [47.25, -21.5], [47.03, -22.03], [46.5, -22.25], [46.25, -22.15], [46.0, -22.25], [45.75, -22.15], [45.5, -22.25], [45.25, -22.15], [45.0, -22.25], [44.75, -22.15], [44.5, -22.25], [44.25, -22.15], [44.0, -22.25], [43.47, -22.03], [43.25, -21.5], [43.38, -21.2], [42.97, -21.03], [42.75, -20.5], [42.85, -20.25], [42.75, -20.0]]]]}, "2022-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.75, -20.0], [42.97, -19.47], [43.5, -19.25], [44.0, -19.46], [44.5, -19.25], [44.75, -19.35], [45.0, -19.25], [45.25, -19.35], [45.5, -19.25], [45.93, -19.43], [45.75, -19.0], [45.85, -18.75], [45.75, -18.5], [45.97, -17.97], [46.5, -17.75], [47.03, -17.97], [47.18, -18.32], [47.53, -18.47], [47.75, -19.0], [47.65, -19.25], [47.75, -19.5], [47.65, -19.75], [47.75, -20.0], [47.53, -20.53], [47.18, -20.68], [47.15, -20.75], [47.25, -21.0], [47.15, -21.25], [47.25, -21.5], [47.03, -22.03], [46.5, -22.25], [46.25, -22.15], [46.0, -22.25], [45.75, -22.15], [45.5, -22.25], [45.25, -22.15], [45.0, -22.25], [44.75, -22.15], [44.5, -22.25], [44.25, -22.15], 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-21.03]]]]}, "2022-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.75, -20.5], [45.85, -20.25], [45.75, -20.0], [45.96, -19.5], [45.75, -19.0], [45.85, -18.75], [45.75, -18.5], [45.97, -17.97], [46.5, -17.75], [47.03, -17.97], [47.18, -18.32], [47.53, -18.47], [47.75, -19.0], [47.65, -19.25], [47.75, -19.5], [47.65, -19.75], [47.75, -20.0], [47.53, -20.53], [47.18, -20.68], [47.15, -20.75], [47.25, -21.0], [47.03, -21.53], [46.5, -21.75], [45.97, -21.53], [45.75, -21.0], [45.85, -20.75], [45.75, -20.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.7983624463604997}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5887009446698188}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.933143435961483, 29.06677094093527, 27.26382655252894, 26.68534042517473, 26.223407963377838, 22.310469764986692]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.934977492865926, 29.236891475597588, 29.447243694407348, 29.7956439656017, 29.14229646371831, 24.416284524215087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0160404306674593, 1.1337721202857551, 1.4817191338086995, 1.8749787967076494, 1.540514002627714, 1.3706955357998467]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.0715480517196738, 1.2469417222709467, 1.9944571411664356, 2.7983624463604997, 2.107102804351996, 1.5098449221176793]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2217600645428637, 1.3909894515793269, 1.4843747947786652, 1.9250103789893378, 1.601596631103947, 1.6608966035996844]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2270797473623096, 1.5552890653580904, 1.9655732295962678, 2.4314434533962848, 2.413574194591028, 1.8483211817858907]}}