{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:36.361445", "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": "2010-Sep-06_to_2010-Sep-08_102.0_42.5"}, "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": 2010090000353}, "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 06 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 08 2010"}, "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": 83738.15788969764}, "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.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": 42.5}, "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": 102.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "102.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.25}, "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": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.82, 40.68], [100.85, 40.75], [100.75, 41.0], [100.97, 41.53], [101.32, 41.68], [101.35, 41.75], [101.32, 41.82], [100.97, 41.97], [100.75, 42.5], [100.97, 43.03], [101.32, 43.18], [101.47, 43.53], [102.0, 43.75], [102.25, 43.65], [102.5, 43.75], [102.75, 43.65], [103.0, 43.75], [103.53, 43.53], [103.68, 43.18], [104.03, 43.03], [104.25, 42.5], [104.15, 42.25], [104.25, 42.0], [104.15, 41.75], [104.18, 41.68], [104.53, 41.53], [104.75, 41.0], [104.53, 40.47], [104.18, 40.32], [104.15, 40.25], [104.25, 40.0], [104.03, 39.47], [103.5, 39.25], [103.25, 39.35], [103.18, 39.32], [103.03, 38.97], [102.5, 38.75], [102.25, 38.85], [102.0, 38.75], [101.47, 38.97], [101.32, 39.32], [101.25, 39.35], [101.18, 39.32], [101.03, 38.97], [100.5, 38.75], [99.97, 38.97], [99.75, 39.5], [99.97, 40.03], [100.32, 40.18], [100.47, 40.53], [100.82, 40.68]]]]}, "2010-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.82, 40.68], [100.85, 40.75], [100.75, 41.0], [100.97, 41.53], [101.32, 41.68], [101.35, 41.75], [101.32, 41.82], [100.97, 41.97], [100.75, 42.5], [100.97, 43.03], [101.32, 43.18], [101.47, 43.53], [102.0, 43.75], [102.25, 43.65], [102.5, 43.75], [102.75, 43.65], [103.0, 43.75], [103.53, 43.53], [103.68, 43.18], [104.03, 43.03], [104.25, 42.5], [104.15, 42.25], [104.25, 42.0], [104.15, 41.75], [104.18, 41.68], [104.53, 41.53], [104.75, 41.0], [104.53, 40.47], [104.18, 40.32], [104.15, 40.25], [104.25, 40.0], [104.03, 39.47], [103.5, 39.25], [103.25, 39.35], [103.18, 39.32], [103.03, 38.97], [102.5, 38.75], [102.25, 38.85], [102.0, 38.75], [101.47, 38.97], [101.32, 39.32], [101.25, 39.35], [101.18, 39.32], [101.03, 38.97], [100.5, 38.75], [99.97, 38.97], [99.75, 39.5], [99.97, 40.03], [100.32, 40.18], [100.47, 40.53], [100.82, 40.68]]]]}, "2010-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.82, 40.68], [100.85, 40.75], [100.75, 41.0], [100.97, 41.53], [101.32, 41.68], [101.35, 41.75], [101.32, 41.82], [100.97, 41.97], [100.75, 42.5], [100.97, 43.03], [101.32, 43.18], [101.47, 43.53], [102.0, 43.75], [102.25, 43.65], [102.5, 43.75], [102.75, 43.65], [103.0, 43.75], [103.53, 43.53], [103.68, 43.18], [104.03, 43.03], [104.25, 42.5], [104.15, 42.25], [104.25, 42.0], [104.15, 41.75], [104.18, 41.68], [104.53, 41.53], [104.75, 41.0], [104.53, 40.47], [104.18, 40.32], [104.15, 40.25], [104.25, 40.0], [104.03, 39.47], [103.5, 39.25], [103.25, 39.35], [103.18, 39.32], [103.03, 38.97], [102.5, 38.75], [102.25, 38.85], [102.0, 38.75], [101.47, 38.97], [101.32, 39.32], [101.25, 39.35], [101.18, 39.32], [101.03, 38.97], [100.5, 38.75], [99.97, 38.97], [99.75, 39.5], [99.97, 40.03], [100.32, 40.18], [100.47, 40.53], [100.82, 40.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.620092698377675}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.851007982871621}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.284354358186192, 11.773005772038118, 12.878194397815946]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.420746891294868, 8.798936795540044, 10.297995591505355]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.1408031791684765, -7.405138986355131, -6.007081783091247]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.620092698377675, -8.526264698339276, -6.861243271401236]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8587707295139657, -1.954481520859051, -1.5805162204075032]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3343899336283025, -2.2755362212347774, -1.801605316496746]}}