{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:26.501177", "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": "2012-Sep-23_to_2012-Sep-25_93.5_43.5"}, "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": 2012090000868}, "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": "September 23 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2012"}, "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": 64556.75321236576}, "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.C.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": 43.5}, "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": 93.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "93.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 91.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 95.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.47, 41.03], [92.0, 41.25], [92.25, 41.15], [92.5, 41.25], [92.75, 41.15], [92.82, 41.18], [92.85, 41.25], [92.75, 41.5], [92.85, 41.75], [92.82, 41.82], [92.47, 41.97], [92.32, 42.32], [91.97, 42.47], [91.75, 43.0], [91.97, 43.53], [92.32, 43.68], [92.47, 44.03], [93.0, 44.25], [93.25, 44.15], [93.32, 44.18], [93.47, 44.53], [94.0, 44.75], [94.53, 44.53], [94.75, 44.0], [94.65, 43.75], [94.68, 43.68], [95.03, 43.53], [95.25, 43.0], [95.03, 42.47], [94.68, 42.32], [94.65, 42.25], [94.68, 42.18], [95.03, 42.03], [95.18, 41.68], [95.53, 41.53], [95.75, 41.0], [95.53, 40.47], [95.0, 40.25], [94.75, 40.35], [94.68, 40.32], [94.53, 39.97], [94.0, 39.75], [93.75, 39.85], [93.68, 39.82], [93.53, 39.47], [93.0, 39.25], [92.75, 39.35], [92.5, 39.25], [92.25, 39.35], [92.0, 39.25], [91.47, 39.47], [91.25, 40.0], [91.35, 40.25], [91.25, 40.5], [91.47, 41.03]]]]}, "2012-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.47, 41.03], [92.0, 41.25], [92.25, 41.15], [92.5, 41.25], [92.75, 41.15], [92.82, 41.18], [92.85, 41.25], [92.75, 41.5], [92.85, 41.75], [92.82, 41.82], [92.47, 41.97], [92.32, 42.32], [91.97, 42.47], [91.75, 43.0], [91.97, 43.53], [92.32, 43.68], [92.47, 44.03], [93.0, 44.25], [93.25, 44.15], [93.32, 44.18], [93.47, 44.53], [94.0, 44.75], [94.53, 44.53], [94.75, 44.0], [94.65, 43.75], [94.68, 43.68], [95.03, 43.53], [95.25, 43.0], [95.03, 42.47], [94.68, 42.32], [94.65, 42.25], [94.68, 42.18], [95.03, 42.03], [95.18, 41.68], [95.53, 41.53], [95.75, 41.0], [95.53, 40.47], [95.0, 40.25], [94.75, 40.35], [94.68, 40.32], [94.53, 39.97], [94.0, 39.75], [93.75, 39.85], [93.68, 39.82], [93.53, 39.47], [93.0, 39.25], [92.75, 39.35], [92.5, 39.25], [92.25, 39.35], [92.0, 39.25], [91.47, 39.47], [91.25, 40.0], [91.35, 40.25], [91.25, 40.5], [91.47, 41.03]]]]}, "2012-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.47, 41.03], [92.0, 41.25], [92.25, 41.15], [92.5, 41.25], [92.75, 41.15], [92.82, 41.18], [92.85, 41.25], [92.75, 41.5], [92.85, 41.75], [92.82, 41.82], [92.47, 41.97], 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{"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.147099270043952, 10.521950855451166, 11.469406489909773]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.4428024063108182, -4.40292167182173, -2.0739371550353667]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.09070628222154, -5.419852567218716, -4.103090052281502]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.519026816299572, -9.155152077486548, -6.400213733353894]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.874677925168292, -1.9232926674359605, -1.4347946438589052]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6054528480604744, -2.676449634417754, -1.797777013256095]}}