{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:12:48.520929", "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-17_to_2021-Aug-22_74.5_20.0"}, "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": 2021080000804}, "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 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 22 2021"}, "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": "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": 124807.64302395444}, "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": ["India"]}, "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": 20.0}, "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": 74.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 73.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 77.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[75.82, 21.18], [75.97, 21.53], [76.5, 21.75], [76.75, 21.65], [77.0, 21.75], [77.53, 21.53], [77.68, 21.18], [78.03, 21.03], [78.25, 20.5], [78.15, 20.25], [78.25, 20.0], [78.15, 19.75], [78.25, 19.5], [78.03, 18.97], [77.68, 18.82], [77.53, 18.47], [77.0, 18.25], [76.75, 18.35], [76.5, 18.25], [76.25, 18.35], [76.0, 18.25], [75.75, 18.35], [75.5, 18.25], [75.25, 18.35], [75.0, 18.25], [74.5, 18.46], [74.0, 18.25], [73.47, 18.47], [73.32, 18.82], [73.25, 18.85], [73.0, 18.75], [72.47, 18.97], [72.25, 19.5], [72.35, 19.75], [72.25, 20.0], [72.35, 20.25], [72.25, 20.5], [72.35, 20.75], [72.25, 21.0], [72.35, 21.25], [72.25, 21.5], [72.47, 22.03], [73.0, 22.25], [73.25, 22.15], [73.5, 22.25], [74.03, 22.03], [74.18, 21.68], [74.25, 21.65], [74.5, 21.75], [74.75, 21.65], [75.0, 21.75], [75.53, 21.53], [75.68, 21.18], [75.75, 21.15], [75.82, 21.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": 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