{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:27.482379", "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-Sep-30_to_2012-Oct-04_81.5_18.5"}, "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": 2012090001123}, "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 30 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 55682.81234390137}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": 18.5}, "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": 81.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 83.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.0, 18.25], [83.53, 18.03], [83.75, 17.5], [83.53, 16.97], [83.0, 16.75], [82.7, 16.88], [82.53, 16.47], [82.0, 16.25], [81.47, 16.47], [81.25, 17.0], [81.47, 17.53], [82.0, 17.75], [82.3, 17.63], [82.47, 18.03], [83.0, 18.25]]]]}, "2012-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.32, 18.18], [82.47, 18.53], [83.0, 18.75], [83.53, 18.53], [83.75, 18.0], [83.65, 17.75], [83.75, 17.5], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.68, 16.82], [82.53, 16.47], [82.0, 16.25], [81.47, 16.47], [81.25, 17.0], [81.47, 17.53], [81.82, 17.68], [81.97, 18.03], [82.32, 18.18]]]]}, "2012-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.35, 19.25], [79.25, 19.5], [79.47, 20.03], [80.0, 20.25], [80.25, 20.15], [80.5, 20.25], [81.0, 20.04], [81.5, 20.25], [82.03, 20.03], [82.18, 19.68], [82.53, 19.53], [82.75, 19.0], [82.65, 18.75], [82.68, 18.68], [82.75, 18.65], [83.0, 18.75], [83.53, 18.53], [83.75, 18.0], [83.65, 17.75], [83.75, 17.5], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.68, 16.82], [82.53, 16.47], [82.0, 16.25], [81.47, 16.47], [81.25, 17.0], [81.46, 17.5], [81.32, 17.82], [81.25, 17.85], [81.0, 17.75], [80.75, 17.85], [80.5, 17.75], [80.25, 17.85], [80.0, 17.75], [79.47, 17.97], [79.25, 18.5], [79.35, 18.75], [79.25, 19.0], [79.35, 19.25]]]]}, "2012-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.35, 19.25], [79.25, 19.5], [79.47, 20.03], [80.0, 20.25], [80.25, 20.15], [80.5, 20.25], [81.0, 20.04], [81.5, 20.25], [82.03, 20.03], [82.18, 19.68], [82.53, 19.53], [82.75, 19.0], [82.65, 18.75], [82.68, 18.68], [82.75, 18.65], [83.0, 18.75], [83.53, 18.53], [83.75, 18.0], [83.53, 17.47], [83.18, 17.32], [83.03, 16.97], [82.5, 16.75], [81.97, 16.97], [81.82, 17.32], [81.47, 17.47], [81.32, 17.82], [81.25, 17.85], [81.0, 17.75], [80.75, 17.85], [80.5, 17.75], [80.25, 17.85], [80.0, 17.75], [79.47, 17.97], [79.25, 18.5], [79.35, 18.75], [79.25, 19.0], [79.35, 19.25]]]]}, "2012-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.35, 19.25], [79.25, 19.5], [79.47, 20.03], [80.0, 20.25], [80.25, 20.15], [80.5, 20.25], [81.0, 20.04], [81.5, 20.25], [82.03, 20.03], [82.18, 19.68], [82.53, 19.53], [82.75, 19.0], [82.65, 18.75], [82.68, 18.68], [83.03, 18.53], [83.25, 18.0], [83.03, 17.47], [82.5, 17.25], [82.25, 17.35], [82.0, 17.25], [81.47, 17.47], [81.32, 17.82], [81.25, 17.85], [81.0, 17.75], [80.75, 17.85], [80.5, 17.75], [80.25, 17.85], [80.0, 17.75], [79.47, 17.97], [79.25, 18.5], [79.35, 18.75], [79.25, 19.0], [79.35, 19.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7719480132463445}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8051646114364202}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.985664505995203, 26.147946029243258, 25.033395901755284, 24.51016437670023, 24.300577516871954]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.87786292137423, 25.005791337560822, 21.655865094886337, 21.68221717641876, 21.92675865324344]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2189609753583568, -1.267596311232893, -1.6279622009557155, -1.9364621011367396, -2.1023292079162994]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2766567630077361, -1.6183830943364796, -2.1813247072835225, -2.7388794662501823, -2.7719480132463445]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3815465864606, -1.4403705337290424, -1.7427601004034465, -2.051947864326511, -2.2285469599687384]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.399681453223346, -1.669423972500247, -2.355347489921691, -2.574671711585904, -2.840492250799221]}}