{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:38.421477", "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": "2026-Jun-13_to_2026-Jun-15_120.5_44.5"}, "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": 2026060000455}, "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": "June 13 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2026"}, "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": 50250.78411245374}, "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", "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": 44.5}, "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": 119.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 123.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.85, 44.75], [118.75, 45.0], [118.85, 45.25], [118.75, 45.5], [118.97, 46.03], [119.5, 46.25], [119.75, 46.15], [120.0, 46.25], [120.25, 46.15], [120.5, 46.25], [120.75, 46.15], [121.0, 46.25], [121.25, 46.15], [121.5, 46.25], [121.75, 46.15], [122.0, 46.25], [122.25, 46.15], [122.5, 46.25], [122.75, 46.15], [123.0, 46.25], [123.25, 46.15], [123.5, 46.25], [124.03, 46.03], [124.25, 45.5], [124.03, 44.97], [123.68, 44.82], [123.53, 44.47], [123.0, 44.25], [122.75, 44.35], [122.5, 44.25], [122.25, 44.35], [122.0, 44.25], [121.75, 44.35], [121.68, 44.32], [121.53, 43.97], [121.0, 43.75], [120.75, 43.85], [120.68, 43.82], [120.53, 43.47], [120.0, 43.25], [119.75, 43.35], [119.5, 43.25], [118.97, 43.47], [118.75, 44.0], [118.85, 44.25], [118.75, 44.5], [118.85, 44.75]]]]}, "2026-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.85, 44.75], [118.75, 45.0], [118.85, 45.25], [118.75, 45.5], [118.97, 46.03], [119.5, 46.25], [119.75, 46.15], [120.0, 46.25], [120.25, 46.15], [120.5, 46.25], [120.75, 46.15], [121.0, 46.25], [121.25, 46.15], [121.5, 46.25], [121.75, 46.15], [122.0, 46.25], [122.25, 46.15], [122.5, 46.25], [122.75, 46.15], [123.0, 46.25], [123.25, 46.15], [123.5, 46.25], [124.03, 46.03], [124.25, 45.5], [124.03, 44.97], [123.68, 44.82], [123.53, 44.47], [123.0, 44.25], [122.75, 44.35], [122.5, 44.25], [122.25, 44.35], [122.0, 44.25], [121.75, 44.35], [121.68, 44.32], [121.53, 43.97], [121.0, 43.75], [120.75, 43.85], [120.68, 43.82], [120.53, 43.47], [120.0, 43.25], [119.75, 43.35], [119.5, 43.25], [118.97, 43.47], [118.75, 44.0], [118.85, 44.25], [118.75, 44.5], [118.85, 44.75]]]]}, "2026-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.85, 44.75], [118.75, 45.0], [118.85, 45.25], [118.75, 45.5], [118.97, 46.03], [119.5, 46.25], [119.75, 46.15], [120.0, 46.25], [120.25, 46.15], [120.5, 46.25], [120.75, 46.15], [121.0, 46.25], [121.25, 46.15], [121.5, 46.25], [121.75, 46.15], [122.0, 46.25], [122.25, 46.15], [122.5, 46.25], [122.75, 46.15], [123.0, 46.25], [123.25, 46.15], [123.5, 46.25], [124.03, 46.03], [124.25, 45.5], [124.03, 44.97], [123.68, 44.82], [123.53, 44.47], [123.0, 44.25], [122.75, 44.35], [122.5, 44.25], [122.25, 44.35], [122.0, 44.25], [121.75, 44.35], [121.68, 44.32], [121.53, 43.97], [121.0, 43.75], [120.75, 43.85], [120.68, 43.82], [120.53, 43.47], [120.0, 43.25], [119.75, 43.35], [119.5, 43.25], [118.97, 43.47], [118.75, 44.0], [118.85, 44.25], [118.75, 44.5], [118.85, 44.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.217742303322837}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.675612739293132}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.10415779887768, 13.274924712250254, 15.687049788323066]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.781124369303427, 10.108052825927757, 12.82591272989913]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.076867161974709, -7.091103753974983, -4.8588673019297035]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.816852919160112, -8.217742303322837, -5.638999767955397]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.387923919829099, -2.0482623371540414, -1.475492015012461]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.566435951687813, -2.334597986322629, -1.6579311918922446]}}