{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:37:24.761001", "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": "2023-Dec-28_to_2024-Jan-04_120.5_48.5"}, "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": 2023120002002}, "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": "December 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 04 2024"}, "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": 65756.25636229983}, "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", "Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "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": 48.5}, "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": 120.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, 47.53], [118.38, 47.7], [118.25, 48.0], [118.35, 48.25], [118.25, 48.5], [118.47, 49.03], [119.0, 49.25], [119.25, 49.15], [119.5, 49.25], [119.75, 49.15], [120.0, 49.25], [120.25, 49.15], [120.5, 49.25], [121.03, 49.03], [121.25, 48.5], [121.03, 47.97], [120.68, 47.82], [120.65, 47.75], [120.75, 47.5], [120.53, 46.97], [120.18, 46.82], [120.03, 46.47], [119.68, 46.32], [119.53, 45.97], [119.0, 45.75], [118.75, 45.85], [118.5, 45.75], [117.97, 45.97], [117.75, 46.5], [117.85, 46.75], [117.75, 47.0], [117.97, 47.53]]]]}, "2023-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, 47.53], [118.38, 47.7], [118.25, 48.0], [118.35, 48.25], [118.25, 48.5], [118.47, 49.03], [119.0, 49.25], [119.25, 49.15], [119.5, 49.25], [119.75, 49.15], [120.0, 49.25], [120.25, 49.15], [120.5, 49.25], [121.03, 49.03], [121.25, 48.5], [121.03, 47.97], [120.68, 47.82], [120.65, 47.75], [120.75, 47.5], [120.53, 46.97], [120.18, 46.82], [120.03, 46.47], [119.68, 46.32], [119.53, 45.97], [119.0, 45.75], [118.75, 45.85], [118.5, 45.75], [117.97, 45.97], [117.75, 46.5], [117.85, 46.75], [117.75, 47.0], [117.97, 47.53]]]]}, "2023-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, 47.53], [118.38, 47.7], [118.25, 48.0], [118.35, 48.25], [118.25, 48.5], [118.47, 49.03], [119.0, 49.25], [119.25, 49.15], [119.5, 49.25], [119.75, 49.15], [120.0, 49.25], [120.25, 49.15], [120.5, 49.25], [121.03, 49.03], [121.25, 48.5], [121.03, 47.97], [120.68, 47.82], [120.65, 47.75], [120.75, 47.5], [120.53, 46.97], [120.18, 46.82], [120.03, 46.47], [119.68, 46.32], [119.53, 45.97], [119.0, 45.75], [118.75, 45.85], [118.5, 45.75], [117.97, 45.97], [117.75, 46.5], [117.85, 46.75], [117.75, 47.0], [117.97, 47.53]]]]}, "2023-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.47, 49.03], [119.0, 49.25], [119.25, 49.15], [119.32, 49.18], [119.35, 49.25], [119.25, 49.5], [119.47, 50.03], [120.0, 50.25], [120.25, 50.15], [120.5, 50.25], [120.75, 50.15], [121.0, 50.25], [121.25, 50.15], [121.5, 50.25], [121.75, 50.15], [122.0, 50.25], [122.53, 50.03], [122.75, 49.5], [122.53, 48.97], [122.18, 48.82], [122.15, 48.75], [122.25, 48.5], [122.03, 47.97], [121.68, 47.82], [121.53, 47.47], [121.0, 47.25], [120.75, 47.35], [120.68, 47.32], [120.53, 46.97], [120.18, 46.82], [120.03, 46.47], [119.5, 46.25], [119.0, 46.46], [118.5, 46.25], [117.97, 46.47], [117.75, 47.0], [117.97, 47.53], [118.38, 47.7], [118.25, 48.0], [118.35, 48.25], [118.25, 48.5], [118.47, 49.03]]]]}, "2024-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.25, 48.5], [118.47, 49.03], [119.0, 49.25], [119.25, 49.15], [119.32, 49.18], [119.35, 49.25], [119.25, 49.5], [119.47, 50.03], [120.0, 50.25], [120.25, 50.15], [120.5, 50.25], [120.75, 50.15], [121.0, 50.25], [121.25, 50.15], [121.5, 50.25], [121.75, 50.15], [122.0, 50.25], [122.53, 50.03], [122.75, 49.5], [122.65, 49.25], [122.75, 49.0], [122.65, 48.75], [122.75, 48.5], [122.53, 47.97], [122.18, 47.82], [122.15, 47.75], [122.25, 47.5], [122.03, 46.97], [121.5, 46.75], [120.97, 46.97], [120.82, 47.32], [120.75, 47.35], [120.68, 47.32], [120.53, 46.97], [120.18, 46.82], [120.03, 46.47], [119.5, 46.25], [118.97, 46.47], [118.75, 47.0], [118.85, 47.25], [118.75, 47.5], [118.85, 47.75], [118.82, 47.82], [118.47, 47.97], [118.25, 48.5]]]]}, "2024-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.46, 48.5], [119.25, 49.0], [119.35, 49.25], [119.25, 49.5], [119.47, 50.03], [119.82, 50.18], [119.97, 50.53], [120.5, 50.75], [121.03, 50.53], [121.18, 50.18], [121.25, 50.15], [121.5, 50.25], [121.75, 50.15], [122.0, 50.25], [122.53, 50.03], [122.75, 49.5], [122.65, 49.25], [122.75, 49.0], [122.65, 48.75], [122.75, 48.5], [122.53, 47.97], [122.18, 47.82], [122.15, 47.75], [122.25, 47.5], [122.03, 46.97], [121.5, 46.75], [120.97, 46.97], [120.82, 47.32], [120.75, 47.35], [120.68, 47.32], [120.53, 46.97], [120.0, 46.75], [119.47, 46.97], [119.25, 47.5], [119.35, 47.75], [119.25, 48.0], [119.46, 48.5]]]]}, "2024-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.46, 48.5], [119.25, 49.0], [119.35, 49.25], [119.25, 49.5], [119.47, 50.03], [119.82, 50.18], [119.97, 50.53], [120.5, 50.75], [121.03, 50.53], [121.18, 50.18], [121.25, 50.15], [121.5, 50.25], [121.75, 50.15], [122.0, 50.25], [122.53, 50.03], [122.75, 49.5], [122.65, 49.25], [122.75, 49.0], [122.65, 48.75], [122.75, 48.5], [122.53, 47.97], [122.18, 47.82], [122.15, 47.75], [122.25, 47.5], [122.03, 46.97], [121.5, 46.75], [120.97, 46.97], [120.82, 47.32], [120.75, 47.35], [120.68, 47.32], [120.53, 46.97], [120.0, 46.75], [119.47, 46.97], [119.25, 47.5], [119.35, 47.75], [119.25, 48.0], [119.46, 48.5]]]]}, "2024-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.5, 50.75], [121.03, 50.53], [121.25, 50.0], [121.03, 49.47], [120.68, 49.32], [120.53, 48.97], [120.0, 48.75], [119.47, 48.97], [119.25, 49.5], [119.47, 50.03], [119.82, 50.18], [119.97, 50.53], [120.5, 50.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.495720863087001}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.869234595926686}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-12.525532355328892, -13.810025311765003, -13.651836254362195, -15.032773177992453, -16.000052604646157, -16.219215814239703, -15.24584731553557, -18.88942677542093]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-11.37849621943343, -12.03870300558134, -11.864245661500036, -13.255236426109889, -13.524274814599835, -13.766538735443646, -13.406568877141524, -18.73467908473353]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.287268999280256, 8.243000059323984, 8.538244960028843, 8.134624981380533, 6.981640188428795, 6.970585622063844, 8.062291822237494, 6.40631900127822]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.489265767228375, 9.258074250448686, 10.495720863087001, 9.52674297069646, 7.935941672318734, 8.056321211458226, 9.582478142829785, 6.6078316787429685]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.776973535567139, 1.5655486023799396, 1.6071557173776316, 1.5898391074163085, 1.4598079549504217, 1.4891133047649963, 1.7038154519222266, 1.3055012685651288]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0186085702131815, 1.766594700909065, 1.8991005304488209, 1.8416589220376052, 1.5370111293944275, 1.6968886938490164, 1.8767638690401995, 1.3217563105016517]}}