{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:16.432015", "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": "2019-Aug-04_to_2019-Aug-07_110.5_43.5"}, "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": 2019080000164}, "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": "August 04 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 07 2019"}, "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": 70487.46812291328}, "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", "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": 43.5}, "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": 110.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 108.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 112.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.47, 42.97], [109.25, 43.5], [109.47, 44.03], [110.0, 44.25], [110.25, 44.15], [110.5, 44.25], [111.03, 44.03], [111.25, 43.5], [111.03, 42.97], [110.5, 42.75], [110.25, 42.85], [110.0, 42.75], [109.47, 42.97]]]]}, "2019-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.47, 45.53], [109.0, 45.75], [109.25, 45.65], [109.32, 45.68], [109.47, 46.03], [110.0, 46.25], [110.25, 46.15], [110.32, 46.18], [110.47, 46.53], [111.0, 46.75], [111.25, 46.65], [111.5, 46.75], [111.75, 46.65], [112.0, 46.75], [112.53, 46.53], [112.75, 46.0], [112.53, 45.47], [112.18, 45.32], [112.15, 45.25], [112.18, 45.18], [112.25, 45.15], [112.5, 45.25], [113.03, 45.03], [113.25, 44.5], [113.15, 44.25], [113.25, 44.0], [113.15, 43.75], [113.25, 43.5], [113.03, 42.97], [112.5, 42.75], [112.25, 42.85], [112.0, 42.75], [111.75, 42.85], [111.5, 42.75], [111.25, 42.85], [111.0, 42.75], [110.75, 42.85], [110.5, 42.75], [110.25, 42.85], [110.0, 42.75], [109.47, 42.97], [109.32, 43.32], [108.97, 43.47], [108.82, 43.82], [108.47, 43.97], [108.25, 44.5], [108.35, 44.75], [108.25, 45.0], [108.47, 45.53]]]]}, "2019-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.47, 45.53], [109.0, 45.75], [109.25, 45.65], [109.32, 45.68], [109.47, 46.03], [110.0, 46.25], [110.25, 46.15], [110.32, 46.18], [110.47, 46.53], [111.0, 46.75], [111.25, 46.65], [111.5, 46.75], [111.75, 46.65], [112.0, 46.75], [112.53, 46.53], [112.75, 46.0], [112.53, 45.47], [112.18, 45.32], [112.15, 45.25], [112.18, 45.18], [112.25, 45.15], [112.5, 45.25], [113.03, 45.03], [113.25, 44.5], [113.15, 44.25], [113.25, 44.0], [113.15, 43.75], [113.25, 43.5], [113.03, 42.97], [112.5, 42.75], [112.25, 42.85], [112.0, 42.75], [111.75, 42.85], [111.5, 42.75], [111.25, 42.85], [111.0, 42.75], [110.75, 42.85], [110.5, 42.75], [110.25, 42.85], [110.0, 42.75], [109.47, 42.97], [109.32, 43.32], [108.97, 43.47], [108.82, 43.82], [108.47, 43.97], [108.25, 44.5], [108.35, 44.75], [108.25, 45.0], [108.47, 45.53]]]]}, "2019-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.47, 45.53], [109.0, 45.75], [109.25, 45.65], [109.32, 45.68], [109.47, 46.03], [110.0, 46.25], [110.25, 46.15], [110.32, 46.18], [110.47, 46.53], [111.0, 46.75], [111.25, 46.65], [111.5, 46.75], [111.75, 46.65], [112.0, 46.75], [112.53, 46.53], [112.75, 46.0], [112.53, 45.47], [112.18, 45.32], [112.15, 45.25], [112.18, 45.18], [112.25, 45.15], [112.5, 45.25], [113.03, 45.03], [113.25, 44.5], [113.15, 44.25], [113.25, 44.0], [113.15, 43.75], [113.25, 43.5], [113.03, 42.97], [112.5, 42.75], [112.25, 42.85], [112.0, 42.75], [111.75, 42.85], [111.5, 42.75], [111.25, 42.85], [111.0, 42.75], [110.75, 42.85], [110.5, 42.75], [110.25, 42.85], [110.0, 42.75], [109.47, 42.97], [109.32, 43.32], [108.97, 43.47], [108.82, 43.82], [108.47, 43.97], [108.25, 44.5], [108.35, 44.75], [108.25, 45.0], [108.47, 45.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.111752556975603}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.047913942907457}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.391542870408387, 18.32948963460069, 15.746341767191495, 17.059893104783896]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.291888413810568, 16.134958289780002, 12.358482603704942, 14.474050679815946]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.29677057273949, -4.921566996580372, -7.383586422448863, -5.948034870328636]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.4381789775588345, -6.088858134766554, -9.111752556975603, -7.0374894176886755]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.374569616927882, -1.4651841065070463, -2.1616733213886112, -1.7228127351079805]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3957484915729481, -1.820285287280194, -2.605065139361727, -2.097619071003787]}}