{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:33.777323", "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": "2021-Sep-24_to_2021-Sep-27_102.5_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": 2021090000831}, "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 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 27 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 50418.72640024362}, "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": 102.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "102.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 101.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 103.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[102.75, 17.15], [103.0, 17.25], [103.53, 17.03], [103.75, 16.5], [103.53, 15.97], [103.18, 15.82], [103.15, 15.75], [103.25, 15.5], [103.03, 14.97], [102.5, 14.75], [102.25, 14.85], [102.0, 14.75], [101.75, 14.85], [101.5, 14.75], [101.25, 14.85], [101.0, 14.75], [100.47, 14.97], [100.25, 15.5], [100.35, 15.75], [100.25, 16.0], [100.35, 16.25], [100.25, 16.5], [100.35, 16.75], [100.25, 17.0], [100.35, 17.25], [100.25, 17.5], [100.35, 17.75], [100.25, 18.0], [100.47, 18.53], [101.0, 18.75], [101.53, 18.53], [101.75, 18.0], [101.65, 17.75], [101.68, 17.68], [102.03, 17.53], [102.18, 17.18], [102.25, 17.15], [102.5, 17.25], [102.75, 17.15]]]]}}, "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": {"2021-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.75, 16.0], [101.85, 16.25], [101.75, 16.5], [101.97, 17.03], [102.5, 17.25], [102.75, 17.15], [103.0, 17.25], [103.53, 17.03], [103.75, 16.5], [103.53, 15.97], [103.18, 15.82], [103.15, 15.75], [103.25, 15.5], [103.03, 14.97], [102.5, 14.75], [101.97, 14.97], [101.75, 15.5], [101.85, 15.75], [101.75, 16.0]]]]}, "2021-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 16.0], [100.35, 16.25], [100.25, 16.5], [100.35, 16.75], [100.25, 17.0], [100.35, 17.25], [100.25, 17.5], [100.35, 17.75], [100.25, 18.0], [100.47, 18.53], [101.0, 18.75], [101.53, 18.53], [101.75, 18.0], [101.65, 17.75], [101.68, 17.68], [102.03, 17.53], [102.18, 17.18], [102.25, 17.15], [102.5, 17.25], [102.75, 17.15], [103.0, 17.25], [103.53, 17.03], [103.75, 16.5], [103.53, 15.97], [103.18, 15.82], [103.15, 15.75], [103.25, 15.5], [103.03, 14.97], [102.5, 14.75], [102.25, 14.85], [102.0, 14.75], [101.75, 14.85], [101.5, 14.75], [101.25, 14.85], [101.0, 14.75], [100.47, 14.97], [100.25, 15.5], [100.35, 15.75], [100.25, 16.0]]]]}, "2021-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 16.0], [100.35, 16.25], [100.25, 16.5], [100.35, 16.75], [100.25, 17.0], [100.35, 17.25], [100.25, 17.5], [100.35, 17.75], [100.25, 18.0], [100.47, 18.53], [101.0, 18.75], [101.53, 18.53], [101.75, 18.0], [101.65, 17.75], [101.68, 17.68], [102.03, 17.53], [102.18, 17.18], [102.25, 17.15], [102.5, 17.25], [102.75, 17.15], [103.0, 17.25], [103.53, 17.03], [103.75, 16.5], [103.53, 15.97], [103.18, 15.82], [103.15, 15.75], [103.25, 15.5], [103.03, 14.97], [102.5, 14.75], [102.25, 14.85], [102.0, 14.75], [101.75, 14.85], [101.5, 14.75], [101.25, 14.85], [101.0, 14.75], [100.47, 14.97], [100.25, 15.5], [100.35, 15.75], [100.25, 16.0]]]]}, "2021-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 16.0], [100.35, 16.25], [100.25, 16.5], [100.35, 16.75], [100.25, 17.0], [100.35, 17.25], [100.25, 17.5], [100.35, 17.75], [100.25, 18.0], [100.47, 18.53], [101.0, 18.75], [101.53, 18.53], [101.75, 18.0], [101.65, 17.75], [101.68, 17.68], [102.03, 17.53], [102.18, 17.18], [102.53, 17.03], [102.75, 16.5], [102.65, 16.25], [102.68, 16.18], [103.03, 16.03], [103.25, 15.5], [103.03, 14.97], [102.5, 14.75], [102.25, 14.85], [102.0, 14.75], [101.75, 14.85], [101.5, 14.75], [101.25, 14.85], [101.0, 14.75], [100.47, 14.97], [100.25, 15.5], [100.35, 15.75], [100.25, 16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.803994997837492}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6329832657671834}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.147400787103834, 24.24738208708277, 25.32579348111301, 25.002986048533955]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.915085982769995, 22.467985352803396, 23.026072469196038, 22.92647827024888]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4761381316127, -2.262095668129468, -1.2677851061106065, -1.357328866525819]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7184270604398648, -2.803994997837492, -1.538993559770745, -1.765591611700188]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5265255553967707, -2.6475414620385256, -1.5120581796675392, -1.632957307724429]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.777195535974035, -3.193266152368248, -1.8581808202147674, -2.1980902868383354]}}