{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:05.901661", "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": "2014-Apr-24_to_2014-Apr-26_106.0_36.5"}, "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": 2014040000861}, "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": "April 24 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2014"}, "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": 52129.21387003368}, "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.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": 36.5}, "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": 106.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "106.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.97, 37.03], [104.5, 37.25], [104.75, 37.15], [104.82, 37.18], [104.97, 37.53], [105.32, 37.68], [105.47, 38.03], [106.0, 38.25], [106.25, 38.15], [106.5, 38.25], [106.75, 38.15], [107.0, 38.25], [107.25, 38.15], [107.5, 38.25], [108.03, 38.03], [108.25, 37.5], [108.15, 37.25], [108.25, 37.0], [108.03, 36.47], [107.68, 36.32], [107.53, 35.97], [107.18, 35.82], [107.15, 35.75], [107.25, 35.5], [107.03, 34.97], [106.5, 34.75], [106.25, 34.85], [106.0, 34.75], [105.47, 34.97], [105.32, 35.32], [105.25, 35.35], [105.0, 35.25], [104.75, 35.35], [104.5, 35.25], [103.97, 35.47], [103.75, 36.0], [103.85, 36.25], [103.75, 36.5], [103.97, 37.03]]]]}, "2014-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.97, 37.03], [104.5, 37.25], [104.75, 37.15], [104.82, 37.18], [104.97, 37.53], [105.32, 37.68], [105.47, 38.03], [106.0, 38.25], [106.25, 38.15], [106.5, 38.25], [106.75, 38.15], [107.0, 38.25], [107.25, 38.15], [107.5, 38.25], [108.03, 38.03], [108.25, 37.5], [108.15, 37.25], [108.25, 37.0], [108.03, 36.47], [107.68, 36.32], [107.53, 35.97], [107.18, 35.82], [107.15, 35.75], [107.25, 35.5], [107.03, 34.97], [106.5, 34.75], [106.25, 34.85], [106.0, 34.75], [105.47, 34.97], [105.32, 35.32], [105.25, 35.35], [105.0, 35.25], [104.75, 35.35], [104.5, 35.25], [103.97, 35.47], [103.75, 36.0], [103.85, 36.25], [103.75, 36.5], [103.97, 37.03]]]]}, "2014-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.97, 37.03], [104.5, 37.25], [104.75, 37.15], [104.82, 37.18], [104.97, 37.53], [105.32, 37.68], [105.47, 38.03], [106.0, 38.25], [106.25, 38.15], [106.5, 38.25], [106.75, 38.15], [107.0, 38.25], [107.25, 38.15], [107.5, 38.25], [108.03, 38.03], [108.25, 37.5], [108.15, 37.25], [108.25, 37.0], [108.03, 36.47], [107.68, 36.32], [107.53, 35.97], [107.18, 35.82], [107.15, 35.75], [107.25, 35.5], [107.03, 34.97], [106.5, 34.75], [106.25, 34.85], [106.0, 34.75], [105.47, 34.97], [105.32, 35.32], [105.25, 35.35], [105.0, 35.25], [104.75, 35.35], [104.5, 35.25], [103.97, 35.47], [103.75, 36.0], [103.85, 36.25], [103.75, 36.5], [103.97, 37.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.033061310072242}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.218219537784178}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.6553337102845376, 1.8011935624293187, 6.386820838626477]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.13718128890940307, -0.5199024976907367, 3.460507417212341]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.131136024375166, -10.347566235859874, -6.175956353117486]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.66004435431347, -13.033061310072242, -7.626337997187818]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.114818442834255, -2.7843336689981237, -1.6888774869690106]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.614269996157046, -3.285585396653157, -2.104458895637509]}}