{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:38.912196", "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": "2025-Nov-01_to_2025-Nov-04_101.5_28.0"}, "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": 2025110000066}, "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": "November 01 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 04 2025"}, "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": 57560.63796999916}, "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": 28.0}, "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": 101.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 104.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.97, 28.53], [101.32, 28.68], [101.47, 29.03], [102.0, 29.25], [102.25, 29.15], [102.5, 29.25], [102.75, 29.15], [103.0, 29.25], [103.53, 29.03], [103.75, 28.5], [103.65, 28.25], [103.75, 28.0], [103.65, 27.75], [103.68, 27.68], [103.75, 27.65], [104.0, 27.75], [104.53, 27.53], [104.75, 27.0], [104.65, 26.75], [104.75, 26.5], [104.65, 26.25], [104.75, 26.0], [104.53, 25.47], [104.0, 25.25], [103.47, 25.47], [103.32, 25.82], [103.25, 25.85], [103.0, 25.75], [102.47, 25.97], [102.32, 26.32], [101.97, 26.47], [101.82, 26.82], [101.75, 26.85], [101.5, 26.75], [100.97, 26.97], [100.75, 27.5], [100.85, 27.75], [100.75, 28.0], [100.97, 28.53]]]]}, "2025-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 28.5], [100.47, 29.03], [101.0, 29.25], [101.25, 29.15], [101.5, 29.25], [101.75, 29.15], [102.0, 29.25], [102.25, 29.15], [102.5, 29.25], [102.75, 29.15], [103.0, 29.25], [103.53, 29.03], [103.75, 28.5], [103.65, 28.25], [103.75, 28.0], [103.65, 27.75], [103.68, 27.68], [103.75, 27.65], [104.0, 27.75], [104.53, 27.53], [104.75, 27.0], [104.65, 26.75], [104.75, 26.5], [104.65, 26.25], [104.75, 26.0], [104.53, 25.47], [104.0, 25.25], [103.47, 25.47], [103.32, 25.82], [103.25, 25.85], [103.0, 25.75], [102.47, 25.97], [102.32, 26.32], [101.97, 26.47], [101.82, 26.82], [101.75, 26.85], [101.5, 26.75], [100.97, 26.97], [100.75, 27.5], [100.85, 27.75], [100.82, 27.82], [100.47, 27.97], [100.25, 28.5]]]]}, "2025-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 28.5], [100.47, 29.03], [101.0, 29.25], [101.25, 29.15], [101.5, 29.25], [101.75, 29.15], [102.0, 29.25], [102.25, 29.15], [102.5, 29.25], [102.75, 29.15], [103.0, 29.25], [103.53, 29.03], [103.75, 28.5], [103.65, 28.25], [103.75, 28.0], [103.65, 27.75], [103.68, 27.68], [103.75, 27.65], [104.0, 27.75], [104.53, 27.53], [104.75, 27.0], [104.65, 26.75], [104.75, 26.5], [104.65, 26.25], [104.75, 26.0], [104.53, 25.47], [104.0, 25.25], [103.47, 25.47], [103.32, 25.82], [103.25, 25.85], [103.0, 25.75], [102.47, 25.97], [102.32, 26.32], [101.97, 26.47], [101.82, 26.82], [101.75, 26.85], [101.5, 26.75], [100.97, 26.97], [100.75, 27.5], [100.85, 27.75], [100.82, 27.82], [100.47, 27.97], [100.25, 28.5]]]]}, "2025-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 28.5], [100.47, 29.03], [101.0, 29.25], [101.25, 29.15], [101.5, 29.25], [102.03, 29.03], [102.25, 28.5], [102.15, 28.25], [102.25, 28.0], [102.03, 27.47], [101.5, 27.25], [100.97, 27.47], [100.82, 27.82], [100.47, 27.97], [100.25, 28.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.256026530437566}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.328809137269995}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.556339785927264, 4.590142882816451, 5.004176500108542, 1.4984438578288177]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.1343577067057709, 0.4634300231933821, 0.4812001546223996, -0.2549741109211823]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6427077746447183, -4.954765743062829, -4.440564657015091, -3.510132888464568]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.079254671040701, -6.256026530437566, -5.4434256443168465, -4.43096602327563]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.647656272617798, -2.225557927279305, -1.9590406749841622, -1.654230598334367]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0743718914290796, -2.9390991639134314, -2.5162376962413795, -1.9241419005724119]}}