{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:05.954453", "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": "2021-Oct-13_to_2021-Oct-17_45.5_-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": 2021100001847}, "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": "October 13 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 17 2021"}, "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": 85133.13175111}, "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": -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": 45.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.5\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": 46.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[43.75, -17.35], [43.82, -17.32], [43.97, -16.97], [44.32, -16.82], [44.35, -16.75], [44.25, -16.5], [44.47, -15.97], [45.0, -15.75], [45.25, -15.85], [45.5, -15.75], [46.03, -15.97], [46.18, -16.32], [46.53, -16.47], [46.75, -17.0], [46.65, -17.25], [46.75, -17.5], [46.65, -17.75], [46.75, -18.0], [46.65, -18.25], [46.75, -18.5], [46.65, -18.75], [46.75, -19.0], [46.65, -19.25], [46.75, -19.5], [46.65, -19.75], [46.75, -20.0], [46.53, -20.53], [46.0, -20.75], [45.5, -20.54], [45.0, -20.75], [44.47, -20.53], [44.25, -20.0], [44.35, -19.75], [44.25, -19.5], [44.35, -19.25], [44.32, -19.18], [44.25, -19.15], [44.0, -19.25], [43.75, -19.15], [43.5, -19.25], [42.97, -19.03], [42.75, -18.5], [42.85, -18.25], [42.75, -18.0], [42.97, -17.47], [43.5, -17.25], [43.75, -17.35]]]]}}, "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": {"2021-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.25, -19.5], [44.35, -19.25], [44.25, -19.0], [44.35, -18.75], [44.25, -18.5], [44.35, -18.25], [44.25, -18.0], [44.35, -17.75], [44.25, -17.5], [44.35, -17.25], [44.25, -17.0], [44.35, -16.75], [44.25, -16.5], [44.47, -15.97], [45.0, -15.75], [45.25, -15.85], [45.5, -15.75], [46.03, -15.97], [46.18, -16.32], [46.53, -16.47], [46.75, -17.0], [46.65, -17.25], [46.75, -17.5], [46.65, -17.75], [46.75, -18.0], [46.65, -18.25], [46.75, -18.5], [46.65, -18.75], [46.75, -19.0], [46.65, -19.25], [46.75, -19.5], [46.65, -19.75], [46.75, -20.0], [46.53, -20.53], [46.0, -20.75], [45.5, -20.54], [45.0, -20.75], [44.47, -20.53], [44.25, -20.0], [44.35, -19.75], [44.25, -19.5]]]]}, "2021-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, -18.53], [43.25, -18.0], [43.47, -17.47], [44.0, -17.25], [44.25, -17.35], [44.32, -17.32], [44.35, -17.25], [44.25, -17.0], [44.35, -16.75], [44.25, -16.5], [44.47, -15.97], [45.0, -15.75], [45.25, -15.85], [45.5, -15.75], [46.03, -15.97], 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[[[[42.75, -18.0], [42.97, -17.47], [43.5, -17.25], [43.75, -17.35], [43.82, -17.32], [43.97, -16.97], [44.5, -16.75], [45.03, -16.97], [45.25, -17.5], [45.15, -17.75], [45.18, -17.82], [45.25, -17.85], [45.5, -17.75], [46.03, -17.97], [46.25, -18.5], [46.15, -18.75], [46.25, -19.0], [46.03, -19.53], [45.5, -19.75], [45.25, -19.65], [45.0, -19.75], [44.47, -19.53], [44.32, -19.18], [44.25, -19.15], [44.0, -19.25], [43.75, -19.15], [43.5, -19.25], [42.97, -19.03], [42.75, -18.5], [42.85, -18.25], [42.75, -18.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.1756193952185754}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.828041398265767}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.470589610957745, 27.87429785329516, 27.604268014421052, 27.110682747033536, 26.945750910098866]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.74239463264604, 29.357624751248807, 29.126028206479646, 28.354089950882724, 28.013400433821573]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.853702198929669, 2.2027372500637488, 1.8800742365328347, 1.433485187009423, 1.2542545370868703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.254727742597254, 3.1756193952185754, 2.5213966540560477, 2.023225573842751, 1.8353135326339043]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6261031399881674, 1.9693918788604343, 1.8426072785622152, 1.5808508477333731, 1.4504769687776855]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.009027299471305, 2.509992207321667, 2.3547642261335398, 1.8312490589822017, 1.7075556821169]}}