{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:07.207171", "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-Aug-16_to_2021-Aug-23_99.5_30.5"}, "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": 2021080002462}, "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": "August 16 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 98429.2524264433}, "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": ["China"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 30.5}, "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": 99.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "99.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 104.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[102.15, 28.75], [102.25, 28.5], [102.03, 27.97], [101.5, 27.75], [101.25, 27.85], [101.0, 27.75], [100.47, 27.97], [100.25, 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"description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.97, 31.53], [99.5, 31.75], [100.03, 31.53], [100.25, 31.0], [100.03, 30.47], [99.5, 30.25], [98.97, 30.47], [98.75, 31.0], [98.97, 31.53]]]]}, "2021-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 31.0], [98.97, 31.53], [99.5, 31.75], [100.0, 31.54], [100.5, 31.75], [101.03, 31.53], [101.25, 31.0], [101.03, 30.47], [100.5, 30.25], [100.2, 30.38], [100.03, 29.97], [99.5, 29.75], [98.97, 29.97], [98.75, 30.5], [98.85, 30.75], [98.75, 31.0]]]]}, "2021-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 30.5], [98.85, 30.75], [98.75, 31.0], [98.97, 31.53], [99.5, 31.75], [100.0, 31.54], [100.5, 31.75], [101.03, 31.53], [101.25, 31.0], [101.03, 30.47], [100.5, 30.25], [100.2, 30.38], [100.15, 30.25], [100.25, 30.0], [100.03, 29.47], [99.5, 29.25], [98.97, 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