{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:53.564748", "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-Mar-07_to_2014-Mar-10_102.5_33.5"}, "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": 2014030000382}, "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": "March 07 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2014"}, "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": 51414.695829838965}, "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": 33.5}, "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": 102.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "102.5\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": 32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.47, 32.97], [101.25, 33.5], [101.47, 34.03], [102.0, 34.25], [102.25, 34.15], [102.32, 34.18], [102.47, 34.53], [103.0, 34.75], [103.25, 34.65], [103.5, 34.75], [104.03, 34.53], [104.25, 34.0], [104.15, 33.75], [104.25, 33.5], [104.03, 32.97], [103.5, 32.75], [103.25, 32.85], [103.0, 32.75], [102.75, 32.85], [102.5, 32.75], [102.25, 32.85], [102.0, 32.75], [101.47, 32.97]]]]}, "2014-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.97, 32.97], [99.75, 33.5], [99.97, 34.03], [100.5, 34.25], [100.75, 34.15], [100.82, 34.18], [100.97, 34.53], [101.32, 34.68], [101.47, 35.03], [102.0, 35.25], [102.25, 35.15], [102.5, 35.25], [102.75, 35.15], [103.0, 35.25], [103.25, 35.15], [103.5, 35.25], [103.75, 35.15], [104.0, 35.25], [104.53, 35.03], [104.75, 34.5], [104.53, 33.97], [104.18, 33.82], [104.15, 33.75], [104.25, 33.5], [104.03, 32.97], [103.5, 32.75], [103.25, 32.85], [103.18, 32.82], [103.03, 32.47], [102.68, 32.32], [102.53, 31.97], [102.0, 31.75], [101.75, 31.85], [101.5, 31.75], [100.97, 31.97], [100.75, 32.5], [100.88, 32.8], [100.75, 32.85], [100.5, 32.75], [99.97, 32.97]]]]}, "2014-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.97, 32.97], [99.75, 33.5], [99.97, 34.03], [100.5, 34.25], [100.75, 34.15], [100.82, 34.18], [100.97, 34.53], [101.32, 34.68], [101.47, 35.03], [102.0, 35.25], [102.25, 35.15], [102.5, 35.25], [102.75, 35.15], [103.0, 35.25], [103.25, 35.15], [103.5, 35.25], [103.75, 35.15], [104.0, 35.25], [104.53, 35.03], [104.75, 34.5], [104.53, 33.97], [104.18, 33.82], [104.15, 33.75], [104.25, 33.5], [104.03, 32.97], [103.5, 32.75], [103.25, 32.85], [103.18, 32.82], [103.03, 32.47], [102.68, 32.32], [102.53, 31.97], [102.0, 31.75], [101.75, 31.85], [101.5, 31.75], [100.97, 31.97], [100.75, 32.5], [100.88, 32.8], [100.75, 32.85], [100.5, 32.75], [99.97, 32.97]]]]}, "2014-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.97, 32.97], [99.75, 33.5], [99.97, 34.03], [100.5, 34.25], [100.75, 34.15], [100.82, 34.18], [100.97, 34.53], [101.32, 34.68], [101.47, 35.03], [102.0, 35.25], [102.25, 35.15], [102.5, 35.25], [102.75, 35.15], [103.0, 35.25], [103.25, 35.15], [103.5, 35.25], [103.75, 35.15], [104.0, 35.25], [104.53, 35.03], [104.75, 34.5], [104.53, 33.97], [104.0, 33.75], [103.75, 33.85], [103.68, 33.82], [103.65, 33.75], [103.75, 33.5], [103.53, 32.97], [103.18, 32.82], [103.03, 32.47], [102.68, 32.32], [102.53, 31.97], [102.0, 31.75], [101.75, 31.85], [101.5, 31.75], [100.97, 31.97], [100.75, 32.5], [100.88, 32.8], [100.75, 32.85], [100.5, 32.75], [99.97, 32.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.309663416847911}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.278648537984001}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-10.906855331358145, -13.529679630481098, -13.15407075591878, -12.424019314077611]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-12.339899429949867, -16.04401779712083, -15.839663514773804, -15.960865191597293]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.0056800711433125, -6.7482585372680886, -6.540581182332636, -5.890146200672316]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.444885540500422, -9.309663416847911, -8.992274649250476, -8.07127470986859]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.458104531409537, -1.9928617771788317, -1.894965824940496, -1.6144006889849547]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7109468944282669, -2.371922442592366, -2.4421982638650537, -2.1529515642763153]}}