{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:10.322790", "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": "2022-Aug-09_to_2022-Aug-14_85.5_23.0"}, "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": 2022080000467}, "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 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 88736.13690457065}, "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"]}, "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": 23.0}, "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": 85.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "85.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 89.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[87.75, 20.5], [87.53, 19.97], [87.18, 19.82], [87.03, 19.47], [86.5, 19.25], [85.97, 19.47], [85.75, 20.0], [85.85, 20.25], 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{"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.75, 22.5], [84.85, 22.75], [84.75, 23.0], [84.85, 23.25], [84.75, 23.5], [84.97, 24.03], [85.5, 24.25], [86.03, 24.03], [86.18, 23.68], [86.25, 23.65], [86.5, 23.75], [87.03, 23.53], [87.18, 23.18], [87.25, 23.15], [87.5, 23.25], [87.75, 23.15], [88.0, 23.25], [88.25, 23.15], [88.5, 23.25], [89.03, 23.03], [89.18, 22.68], [89.53, 22.53], [89.75, 22.0], [89.53, 21.47], [89.0, 21.25], [88.75, 21.35], [88.5, 21.25], [88.25, 21.35], [88.0, 21.25], [87.75, 21.35], [87.5, 21.25], [87.25, 21.35], [87.18, 21.32], [87.03, 20.97], [86.5, 20.75], [86.25, 20.85], [86.0, 20.75], [85.47, 20.97], [85.32, 21.32], [84.97, 21.47], [84.75, 22.0], [84.85, 22.25], [84.75, 22.5]]]]}, "2022-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.47, 23.53], [84.0, 23.75], [84.25, 23.65], 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19.25], [85.97, 19.47], [85.75, 20.0], [85.85, 20.25], [85.75, 20.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7031632004441235}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8273990637045852}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.2749028103363, 25.49055307944633, 25.38203393209443, 25.570245854226755, 26.982805147890417, 27.17970865565229]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.685189428715603, 22.662197892426832, 22.268168261292317, 23.02108208400466, 26.810862415490703, 26.64298241798832]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.600792188840407, -1.986296875575856, 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