{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:42.501469", "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": "2023-Jan-15_to_2023-Jan-21_357.5_21.5"}, "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": 2023010002349}, "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": "January 15 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 21 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 68917.31916200172}, "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", "Mali"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 21.5}, "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": 357.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[0.75, 21.0], [0.53, 20.47], [0.0, 20.25], [-0.25, 20.35], [-0.32, 20.32], [-0.47, 19.97], [-1.0, 19.75], [-1.25, 19.85], [-1.5, 19.75], [-1.75, 19.85], [-2.0, 19.75], [-2.53, 19.97], [-2.68, 20.32], [-2.75, 20.35], [-3.0, 20.25], [-3.53, 20.47], [-3.75, 21.0], [-3.54, 21.5], [-3.68, 21.82], [-4.03, 21.97], [-4.25, 22.5], [-4.03, 23.03], [-3.68, 23.18], [-3.53, 23.53], [-3.0, 23.75], [-2.5, 23.54], [-2.0, 23.75], [-1.75, 23.65], [-1.5, 23.75], [-0.97, 23.53], [-0.75, 23.0], [-0.85, 22.75], [-0.75, 22.5], [-0.85, 22.25], [-0.75, 22.0], [-0.87, 21.7], [-0.75, 21.65], [-0.5, 21.75], [-0.25, 21.65], [0.0, 21.75], [0.53, 21.53], [0.75, 21.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.5, 20.75], [-3.0299999999999727, 20.97], [-3.25, 21.5], [-3.0299999999999727, 22.03], [-2.5, 22.25], [-2.25, 22.15], [-2.0, 22.25], [-1.4700000000000273, 22.03], [-1.25, 21.5], [-1.4700000000000273, 20.97], [-2.0, 20.75], [-2.25, 20.85], [-2.5, 20.75]]]]}, "2023-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.75, 22.5], [-3.5299999999999727, 23.03], [-3.0, 23.25], [-2.75, 23.15], [-2.5, 23.25], [-2.25, 23.15], [-2.180000000000007, 23.18], [-2.0299999999999727, 23.53], [-1.5, 23.75], [-0.9700000000000273, 23.53], [-0.75, 23.0], [-0.9599999999999795, 22.5], [-0.75, 22.0], [-0.9700000000000273, 21.47], [-1.3199999999999932, 21.32], [-1.4700000000000273, 20.97], [-2.0, 20.75], [-2.25, 20.85], [-2.5, 20.75], [-3.0299999999999727, 20.97], [-3.180000000000007, 21.32], [-3.5299999999999727, 21.47], [-3.75, 22.0], [-3.6499999999999773, 22.25], [-3.75, 22.5]]]]}, "2023-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.029999999999973, 21.97], [-4.25, 22.5], [-4.029999999999973, 23.03], [-3.680000000000007, 23.18], [-3.5299999999999727, 23.53], [-3.0, 23.75], [-2.5, 23.54], 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21.10507182327052, 21.047446384844932, NaN, NaN]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1101436406937637, 3.1721189090863446, 3.4884366308044448, 3.8010709741932027, 3.517566118620212, NaN, NaN]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.1632595654858164, 3.2537301926752775, 4.00131254552241, 4.8585728084268, 3.835401145088099, NaN, NaN]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.261885991864081, 1.2931857455365545, 1.4436845439939012, 1.5510394474491436, 1.4083801763219974, NaN, NaN]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": 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