{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:39.984929", "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": "2012-Jun-16_to_2012-Jun-18_103.5_29.5"}, "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": 2012060000789}, "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": "June 16 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 18 2012"}, "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": 67170.33857638328}, "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": 29.5}, "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": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 102.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 105.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.25, 29.0], [102.47, 29.53], [102.82, 29.68], [102.85, 29.75], [102.75, 30.0], [102.85, 30.25], [102.75, 30.5], [102.97, 31.03], [103.32, 31.18], [103.47, 31.53], [104.0, 31.75], [104.25, 31.65], [104.5, 31.75], [104.75, 31.65], [105.0, 31.75], [105.53, 31.53], [105.75, 31.0], [105.65, 30.75], [105.68, 30.68], [106.03, 30.53], [106.25, 30.0], [106.03, 29.47], [105.68, 29.32], [105.53, 28.97], [105.18, 28.82], [105.15, 28.75], [105.25, 28.5], [105.03, 27.97], [104.68, 27.82], [104.53, 27.47], [104.0, 27.25], [103.75, 27.35], [103.5, 27.25], [102.97, 27.47], [102.75, 28.0], [102.85, 28.25], [102.82, 28.32], [102.47, 28.47], [102.25, 29.0]]]]}, "2012-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.25, 29.0], [102.47, 29.53], [102.82, 29.68], [102.85, 29.75], [102.75, 30.0], [102.85, 30.25], [102.75, 30.5], [102.97, 31.03], [103.32, 31.18], [103.47, 31.53], [104.0, 31.75], [104.25, 31.65], [104.5, 31.75], [104.75, 31.65], [105.0, 31.75], [105.53, 31.53], [105.75, 31.0], [105.65, 30.75], [105.68, 30.68], [106.03, 30.53], [106.25, 30.0], [106.03, 29.47], [105.68, 29.32], [105.53, 28.97], [105.18, 28.82], [105.15, 28.75], [105.25, 28.5], [105.03, 27.97], [104.68, 27.82], [104.53, 27.47], [104.0, 27.25], [103.75, 27.35], [103.5, 27.25], [102.97, 27.47], [102.75, 28.0], [102.85, 28.25], [102.82, 28.32], [102.47, 28.47], [102.25, 29.0]]]]}, "2012-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.25, 29.0], [102.47, 29.53], [102.82, 29.68], [102.85, 29.75], [102.75, 30.0], [102.85, 30.25], [102.75, 30.5], [102.97, 31.03], [103.32, 31.18], [103.47, 31.53], [104.0, 31.75], [104.25, 31.65], [104.5, 31.75], [104.75, 31.65], [105.0, 31.75], [105.53, 31.53], [105.75, 31.0], [105.65, 30.75], [105.68, 30.68], [106.03, 30.53], [106.25, 30.0], [106.03, 29.47], [105.68, 29.32], [105.53, 28.97], [105.18, 28.82], [105.15, 28.75], [105.25, 28.5], [105.03, 27.97], [104.68, 27.82], [104.53, 27.47], [104.0, 27.25], [103.75, 27.35], [103.5, 27.25], [102.97, 27.47], [102.75, 28.0], [102.85, 28.25], [102.82, 28.32], [102.47, 28.47], [102.25, 29.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.387739133417085}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.257734594264442}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.154051656263903, 19.145441155641663, 19.573635075519974]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.121713572394128, 13.26126478282697, 14.351773230325534]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.357915788135899, -4.390629154847254, -4.024658839810172]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.387739133417085, -5.349445740785825, -5.196442463524761]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7581499143855133, -1.8362595723343507, -1.8016788197260554]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.060113140912931, -2.120580343309589, -2.205037910090852]}}