{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:37.016739", "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": "2018-Apr-06_to_2018-Apr-08_101.0_25.5"}, "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": 2018040000361}, "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": "April 06 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 67938.24293630956}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "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": 25.5}, "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": 101.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 105.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 25.5], [99.97, 26.03], [100.5, 26.25], [100.75, 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"MultiPolygon", "coordinates": [[[[99.75, 25.5], [99.97, 26.03], [100.5, 26.25], [100.75, 26.15], [101.0, 26.25], [101.25, 26.15], [101.5, 26.25], [102.03, 26.03], [102.25, 25.5], [102.03, 24.97], [101.68, 24.82], [101.65, 24.75], [101.75, 24.5], [101.65, 24.25], [101.68, 24.18], [101.75, 24.15], [101.82, 24.18], [101.97, 24.53], [102.5, 24.75], [102.75, 24.65], [103.0, 24.75], [103.53, 24.53], [103.75, 24.0], [103.65, 23.75], [103.68, 23.68], [103.75, 23.65], [104.0, 23.75], [104.25, 23.65], [104.32, 23.68], [104.47, 24.03], [105.0, 24.25], [105.53, 24.03], [105.75, 23.5], [105.53, 22.97], [105.18, 22.82], [105.03, 22.47], [104.5, 22.25], [104.25, 22.35], [104.0, 22.25], [103.75, 22.35], [103.68, 22.32], [103.53, 21.97], [103.0, 21.75], [102.5, 21.96], [102.0, 21.75], [101.47, 21.97], [101.32, 22.32], [101.25, 22.35], [101.0, 22.25], [100.47, 22.47], [100.25, 23.0], [100.35, 23.25], [100.25, 23.5], [100.35, 23.75], [100.25, 24.0], [100.35, 24.25], [100.25, 24.5], [100.35, 24.75], 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"Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.876489266853582, -9.921027276327095, -5.500512349757571]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.183587915996231, -3.625994584450536, -1.7537539997290434]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.307020791306213, -4.536925505636802, -2.436798072144431]}}