{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:12.901784", "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": "2025-Oct-04_to_2025-Oct-08_116.5_5.0"}, "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": 2025100000173}, "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": "October 04 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 08 2025"}, "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": 55458.02439734091}, "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": ["Indonesia", "Malaysia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": ["Sulu Sea"]}, "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": 5.0}, "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": 116.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 115.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[114.75, 3.5], [114.85, 3.75], [114.75, 4.0], [114.97, 4.53], [115.32, 4.68], [115.47, 5.03], [115.82, 5.18], [115.97, 5.53], [116.32, 5.68], [116.47, 6.03], [116.82, 6.18], [116.97, 6.53], [117.5, 6.75], [118.03, 6.53], [118.18, 6.18], [118.25, 6.15], [118.5, 6.25], [119.03, 6.03], [119.25, 5.5], [119.03, 4.97], [118.68, 4.82], [118.53, 4.47], [118.18, 4.32], [118.03, 3.97], [117.5, 3.75], [117.25, 3.85], [117.0, 3.75], [116.75, 3.85], [116.5, 3.75], [116.25, 3.85], [116.18, 3.82], [116.15, 3.75], [116.25, 3.5], [116.15, 3.25], [116.25, 3.0], [116.15, 2.75], [116.25, 2.5], [116.15, 2.25], [116.25, 2.0], [116.03, 1.47], [115.5, 1.25], [114.97, 1.47], [114.75, 2.0], [114.85, 2.25], [114.75, 2.5], [114.85, 2.75], [114.75, 3.0], [114.85, 3.25], [114.75, 3.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.85, 2.75], [114.75, 3.0], [114.97, 3.53], [115.5, 3.75], [116.03, 3.53], [116.25, 3.0], [116.15, 2.75], [116.25, 2.5], [116.15, 2.25], [116.25, 2.0], [116.03, 1.47], [115.5, 1.25], [114.97, 1.47], [114.75, 2.0], [114.85, 2.25], [114.75, 2.5], [114.85, 2.75]]], [[[116.5, 5.75], [116.75, 5.65], [116.82, 5.68], [116.97, 6.03], [117.5, 6.25], [117.75, 6.15], [118.0, 6.25], [118.25, 6.15], [118.5, 6.25], [119.03, 6.03], [119.25, 5.5], [119.03, 4.97], [118.68, 4.82], [118.53, 4.47], [118.18, 4.32], [118.03, 3.97], [117.5, 3.75], [117.25, 3.85], [117.0, 3.75], [116.75, 3.85], [116.5, 3.75], [116.25, 3.85], [116.0, 3.75], [115.47, 3.97], [115.25, 4.5], [115.47, 5.03], [115.82, 5.18], [115.97, 5.53], [116.5, 5.75]]]]}, "2025-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, 2.5], [114.85, 2.75], [114.75, 3.0], [114.85, 3.25], [114.75, 3.5], [114.85, 3.75], [114.75, 4.0], [114.97, 4.53], [115.32, 4.68], [115.47, 5.03], [115.82, 5.18], [115.97, 5.53], [116.32, 5.68], [116.47, 6.03], [117.0, 6.25], [117.25, 6.15], [117.5, 6.25], [117.75, 6.15], [118.0, 6.25], [118.25, 6.15], [118.5, 6.25], [119.03, 6.03], [119.25, 5.5], [119.03, 4.97], [118.68, 4.82], [118.53, 4.47], [118.18, 4.32], [118.03, 3.97], [117.5, 3.75], [117.25, 3.85], [117.0, 3.75], [116.75, 3.85], [116.5, 3.75], [116.25, 3.85], [116.18, 3.82], [116.15, 3.75], [116.25, 3.5], [116.15, 3.25], [116.25, 3.0], [116.15, 2.75], [116.25, 2.5], [116.15, 2.25], [116.25, 2.0], [116.03, 1.47], [115.5, 1.25], [114.97, 1.47], [114.75, 2.0], [114.85, 2.25], [114.75, 2.5]]]]}, "2025-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, 2.5], [114.85, 2.75], [114.75, 3.0], [114.85, 3.25], [114.75, 3.5], [114.85, 3.75], [114.75, 4.0], [114.97, 4.53], [115.32, 4.68], [115.47, 5.03], [115.82, 5.18], [115.97, 5.53], [116.32, 5.68], [116.47, 6.03], [116.82, 6.18], [116.97, 6.53], [117.5, 6.75], [118.03, 6.53], [118.18, 6.18], [118.25, 6.15], [118.5, 6.25], [119.03, 6.03], [119.25, 5.5], 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3.5], [116.15, 3.25], [116.25, 3.0], [116.03, 2.47], [115.5, 2.25], [114.97, 2.47], [114.75, 3.0], [114.85, 3.25], [114.75, 3.5]]]]}, "2025-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, 3.5], [114.85, 3.75], [114.75, 4.0], [114.97, 4.53], [115.5, 4.75], [115.93, 4.57], [115.75, 5.0], [115.97, 5.53], [116.32, 5.68], [116.47, 6.03], [116.82, 6.18], [116.97, 6.53], [117.5, 6.75], [118.03, 6.53], [118.25, 6.0], [118.15, 5.75], [118.25, 5.5], [118.03, 4.97], [117.5, 4.75], [117.25, 4.85], [117.18, 4.82], [117.03, 4.47], [116.5, 4.25], [116.07, 4.43], [116.25, 4.0], [116.15, 3.75], [116.25, 3.5], [116.15, 3.25], [116.25, 3.0], [116.03, 2.47], [115.5, 2.25], [114.97, 2.47], [114.75, 3.0], [114.85, 3.25], [114.75, 3.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4311754993042882}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3536275217707752}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.30453552972699, 22.677032276228374, 22.787723089147562, 22.645583382631003, 22.302507382347528]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.368843332926474, 19.007876332600915, 18.763435618082724, 18.67424799601241, 18.850986735026083]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1336773469202919, -1.3479232381140225, -1.386355045584976, -1.5697241929573063, -1.3219022526266389]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3961380746031864, -2.2825154582338882, -2.025205032256167, -2.4311754993042882, -1.7553554198671009]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.575121781583458, -1.8425200326609958, -1.9089022204565798, -2.092548326132037, -1.66458004049123]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8250248420490078, -2.7765870230483776, -3.161312716443591, -2.8954444231705696, -1.9916573876134653]}}