{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:25.038498", "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": "2015-Jul-16_to_2015-Jul-19_113.0_26.0"}, "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": 2015070000759}, "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 16 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 19 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 66289.30539157058}, "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": 26.0}, "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": 113.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 111.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 114.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.85, 26.25], [110.75, 26.5], [110.85, 26.75], [110.75, 27.0], [110.97, 27.53], [111.32, 27.68], [111.47, 28.03], [111.82, 28.18], [111.97, 28.53], [112.5, 28.75], [112.75, 28.65], [113.0, 28.75], [113.53, 28.53], [113.7, 28.13], [114.0, 28.25], [114.53, 28.03], [114.75, 27.5], [114.53, 26.97], [114.18, 26.82], [114.15, 26.75], [114.25, 26.5], [114.15, 26.25], [114.25, 26.0], [114.03, 25.47], [113.5, 25.25], [113.25, 25.35], [113.18, 25.32], [113.03, 24.97], [112.5, 24.75], [112.25, 24.85], [112.0, 24.75], [111.75, 24.85], [111.5, 24.75], [110.97, 24.97], [110.75, 25.5], [110.85, 25.75], [110.75, 26.0], [110.85, 26.25]]]]}, "2015-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.85, 26.25], [110.75, 26.5], [110.85, 26.75], [110.75, 27.0], [110.97, 27.53], [111.32, 27.68], [111.47, 28.03], [111.82, 28.18], [111.97, 28.53], [112.5, 28.75], [112.75, 28.65], [113.0, 28.75], [113.53, 28.53], [113.7, 28.13], [114.0, 28.25], [114.53, 28.03], [114.75, 27.5], [114.53, 26.97], [114.18, 26.82], [114.15, 26.75], [114.25, 26.5], [114.15, 26.25], [114.25, 26.0], [114.03, 25.47], [113.5, 25.25], [113.25, 25.35], [113.18, 25.32], [113.03, 24.97], [112.5, 24.75], [112.25, 24.85], [112.0, 24.75], [111.75, 24.85], [111.5, 24.75], [110.97, 24.97], [110.75, 25.5], [110.85, 25.75], [110.75, 26.0], [110.85, 26.25]]]]}, "2015-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.85, 26.25], [110.75, 26.5], [110.85, 26.75], [110.75, 27.0], [110.97, 27.53], [111.32, 27.68], [111.47, 28.03], [111.82, 28.18], [111.97, 28.53], [112.5, 28.75], [112.75, 28.65], [113.0, 28.75], [113.53, 28.53], [113.7, 28.13], [114.0, 28.25], [114.53, 28.03], [114.75, 27.5], [114.53, 26.97], [114.18, 26.82], [114.15, 26.75], [114.25, 26.5], [114.15, 26.25], [114.25, 26.0], [114.03, 25.47], [113.5, 25.25], [113.25, 25.35], [113.18, 25.32], [113.03, 24.97], [112.5, 24.75], [112.25, 24.85], [112.0, 24.75], [111.75, 24.85], [111.5, 24.75], [110.97, 24.97], [110.75, 25.5], [110.85, 25.75], [110.75, 26.0], [110.85, 26.25]]]]}, "2015-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.47, 25.97], [111.25, 26.5], [111.47, 27.03], [112.0, 27.25], [112.25, 27.15], [112.5, 27.25], [113.03, 27.03], [113.18, 26.68], [113.53, 26.53], [113.75, 26.0], [113.53, 25.47], [113.0, 25.25], [112.47, 25.47], [112.32, 25.82], [112.25, 25.85], [112.0, 25.75], [111.47, 25.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.398211895546069}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.442195817299337}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.464932893689877, 24.5205950296496, 25.76019759399611, 27.6388189559338]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.877230455156052, 23.09552367612156, 23.28785140530607, 27.31017239489961]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.926487080989214, -4.88041536569813, -3.707226291966189, -2.941865523255179]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.398211895546069, -5.7729141061468, -5.2730916918160915, -3.149680921223137]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.24303125347857, -2.26907199377357, -1.7917074745555055, -1.3584390434425453]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7292466507980153, -2.5542070280075517, -2.621241378434507, -1.4184975756347058]}}