{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:20.911848", "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": "2025-Jul-12_to_2025-Jul-16_359.5_17.0"}, "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": 2025070000560}, "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": "July 12 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 2025"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 65060.892366940745}, "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": ["Mali"]}, "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": 17.0}, "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": 359.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 358.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.0}, "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": [[[[0.53, 15.47], [0.0, 15.25], [-0.25, 15.35], [-0.5, 15.25], [-0.75, 15.35], [-1.0, 15.25], [-1.53, 15.47], [-1.75, 16.0], [-1.65, 16.25], [-1.68, 16.32], [-1.75, 16.35], [-2.0, 16.25], [-2.53, 16.47], [-2.75, 17.0], [-2.65, 17.25], [-2.75, 17.5], [-2.53, 18.03], [-2.0, 18.25], [-1.75, 18.15], [-1.68, 18.18], [-1.53, 18.53], [-1.0, 18.75], [-0.47, 18.53], [-0.32, 18.18], [-0.25, 18.15], [0.0, 18.25], [0.53, 18.03], [0.68, 17.68], [0.75, 17.65], [1.0, 17.75], [1.25, 17.65], [1.5, 17.75], [2.03, 17.53], [2.25, 17.0], [2.03, 16.47], [1.68, 16.32], [1.53, 15.97], [1.0, 15.75], [0.75, 15.85], [0.68, 15.82], [0.53, 15.47]]]]}}, "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": {"2025-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.5299999999999727, 16.53], [0.0, 16.75], [0.5299999999999727, 16.53], [0.75, 16.0], [0.5299999999999727, 15.47], [0.0, 15.25], [-0.5299999999999727, 15.47], [-0.75, 16.0], [-0.5299999999999727, 16.53]]]]}, "2025-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.75, 17.5], [-2.5299999999999727, 18.03], [-2.0, 18.25], [-1.75, 18.15], [-1.6800000000000068, 18.18], [-1.5299999999999727, 18.53], [-1.0, 18.75], [-0.4700000000000273, 18.53], [-0.3199999999999932, 18.18], [-0.25, 18.15], [0.0, 18.25], [0.5299999999999727, 18.03], [0.6800000000000068, 17.68], [0.75, 17.65], [1.0, 17.75], [1.25, 17.65], [1.5, 17.75], [2.0299999999999727, 17.53], [2.25, 17.0], [2.0299999999999727, 16.47], [1.6800000000000068, 16.32], [1.5299999999999727, 15.97], [1.0, 15.75], [0.75, 15.85], [0.6800000000000068, 15.82], [0.5299999999999727, 15.47], [0.0, 15.25], [-0.25, 15.35], [-0.5, 15.25], [-0.75, 15.35], [-1.0, 15.25], [-1.5299999999999727, 15.47], [-1.75, 16.0], [-1.6499999999999773, 16.25], [-1.6800000000000068, 16.32], [-1.75, 16.35], [-2.0, 16.25], [-2.5299999999999727, 16.47], [-2.75, 17.0], [-2.6499999999999773, 17.25], [-2.75, 17.5]]]]}, 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