{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:59.975524", "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-Sep-25_to_2022-Sep-30_101.0_15.5"}, "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": 2022090000911}, "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 25 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 30 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": 118868.86657848726}, "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": ["Thailand"]}, "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": 15.5}, "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": 101.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 104.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[99.5, 16.75], [99.75, 16.65], [100.0, 16.75], [100.5, 16.54], [100.82, 16.68], [100.85, 16.75], [100.75, 17.0], [100.97, 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"value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.97, 15.47], [98.75, 16.0], [98.97, 16.53], [99.5, 16.75], [99.75, 16.65], [100.0, 16.75], [100.53, 16.53], [100.68, 16.18], [100.75, 16.15], [101.0, 16.25], [101.53, 16.03], [101.68, 15.68], [102.03, 15.53], [102.25, 15.0], [102.15, 14.75], [102.25, 14.5], [102.03, 13.97], [101.68, 13.82], [101.53, 13.47], [101.0, 13.25], [100.47, 13.47], [100.32, 13.82], [99.97, 13.97], [99.75, 14.5], [99.85, 14.75], [99.82, 14.82], [99.47, 14.97], [99.32, 15.32], [98.97, 15.47]]]]}, "2022-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.97, 15.47], [98.75, 16.0], [98.97, 16.53], [99.5, 16.75], [99.75, 16.65], [100.0, 16.75], [100.53, 16.53], [100.68, 16.18], [100.75, 16.15], [101.0, 16.25], [101.53, 16.03], [101.68, 15.68], [102.03, 15.53], 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duration", "value": -1.8924016937976138}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.138816821367698, 25.66896849972818, 26.483784601855746, 24.93821601752603, 25.09508017483256, 25.63011063884926]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.549796136744703, 22.676687025515434, 23.5267701599966, 22.912744113382644, 22.205879288178096, 23.116793460522047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.630562740333507, -2.161114456853999, -1.3734823787062378, -2.2480845745064375, -2.055935164479546, -1.51345019276638]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9276456829200583, -2.643099797342245, -1.9594663223041948, -3.3773234047155825, 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