{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:15.324933", "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": "2023-Sep-26_to_2023-Sep-29_103.5_16.5"}, "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": 2023090000500}, "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 26 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2023"}, "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": 91690.4710330244}, "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": ["Lao People's Democratic Republic", "Thailand"]}, "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": []}, "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": 16.5}, "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": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\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": 104.0}, "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": 18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[100.75, 17.5], [100.97, 18.03], [101.32, 18.18], [101.35, 18.25], [101.25, 18.5], [101.47, 19.03], [102.0, 19.25], [102.53, 19.03], [102.68, 18.68], [102.75, 18.65], [103.0, 18.75], [103.25, 18.65], [103.5, 18.75], [104.03, 18.53], [104.18, 18.18], [104.53, 18.03], [104.75, 17.5], [104.65, 17.25], [104.75, 17.0], [104.65, 16.75], [104.75, 16.5], [104.65, 16.25], [104.75, 16.0], [104.65, 15.75], [104.75, 15.5], [104.53, 14.97], [104.0, 14.75], [103.75, 14.85], [103.5, 14.75], [102.97, 14.97], [102.82, 15.32], [102.75, 15.35], [102.5, 15.25], [102.0, 15.46], [101.5, 15.25], [101.25, 15.35], [101.0, 15.25], [100.47, 15.47], [100.25, 16.0], [100.35, 16.25], [100.25, 16.5], [100.47, 17.03], [100.88, 17.2], [100.75, 17.5]]]]}}, "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": {"2023-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 16.5], [100.47, 17.03], [100.88, 17.2], [100.75, 17.5], [100.97, 18.03], [101.32, 18.18], [101.47, 18.53], [102.0, 18.75], [102.25, 18.65], [102.5, 18.75], [102.75, 18.65], [103.0, 18.75], [103.25, 18.65], [103.5, 18.75], [104.03, 18.53], [104.18, 18.18], [104.53, 18.03], [104.75, 17.5], [104.65, 17.25], [104.75, 17.0], [104.65, 16.75], [104.75, 16.5], [104.65, 16.25], [104.75, 16.0], [104.65, 15.75], [104.75, 15.5], [104.53, 14.97], [104.0, 14.75], [103.75, 14.85], [103.5, 14.75], [102.97, 14.97], [102.82, 15.32], [102.75, 15.35], [102.5, 15.25], [102.0, 15.46], [101.5, 15.25], [101.25, 15.35], [101.0, 15.25], [100.47, 15.47], [100.25, 16.0], [100.35, 16.25], [100.25, 16.5]]]]}, "2023-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 16.5], [100.47, 17.03], [100.88, 17.2], [100.75, 17.5], [100.97, 18.03], [101.32, 18.18], [101.35, 18.25], [101.25, 18.5], [101.47, 19.03], [102.0, 19.25], [102.53, 19.03], [102.68, 18.68], [102.75, 18.65], [103.0, 18.75], [103.25, 18.65], [103.5, 18.75], [104.03, 18.53], [104.18, 18.18], [104.53, 18.03], [104.75, 17.5], [104.65, 17.25], [104.75, 17.0], [104.65, 16.75], [104.75, 16.5], [104.65, 16.25], [104.75, 16.0], [104.65, 15.75], [104.75, 15.5], [104.53, 14.97], [104.0, 14.75], [103.75, 14.85], [103.5, 14.75], [102.97, 14.97], [102.82, 15.32], [102.75, 15.35], [102.5, 15.25], [102.0, 15.46], [101.5, 15.25], [101.25, 15.35], [101.0, 15.25], [100.47, 15.47], [100.25, 16.0], [100.35, 16.25], [100.25, 16.5]]]]}, "2023-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.25, 16.5], [100.47, 17.03], [100.88, 17.2], [100.75, 17.5], [100.97, 18.03], [101.32, 18.18], [101.35, 18.25], [101.25, 18.5], [101.47, 19.03], [102.0, 19.25], [102.53, 19.03], [102.68, 18.68], [102.75, 18.65], [103.0, 18.75], [103.25, 18.65], [103.5, 18.75], [104.03, 18.53], [104.18, 18.18], [104.53, 18.03], [104.75, 17.5], [104.65, 17.25], [104.75, 17.0], [104.65, 16.75], [104.75, 16.5], [104.65, 16.25], [104.75, 16.0], [104.65, 15.75], [104.75, 15.5], [104.53, 14.97], [104.0, 14.75], [103.75, 14.85], [103.5, 14.75], [102.97, 14.97], [102.82, 15.32], [102.75, 15.35], [102.5, 15.25], [102.0, 15.46], [101.5, 15.25], [101.25, 15.35], [101.0, 15.25], [100.47, 15.47], [100.25, 16.0], [100.35, 16.25], [100.25, 16.5]]]]}, "2023-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.47, 17.97], [101.25, 18.5], [101.47, 19.03], [102.0, 19.25], [102.53, 19.03], [102.68, 18.68], [102.75, 18.65], [103.0, 18.75], [103.25, 18.65], [103.5, 18.75], [104.03, 18.53], [104.25, 18.0], [104.03, 17.47], [103.5, 17.25], [103.25, 17.35], [103.0, 17.25], [102.75, 17.35], [102.5, 17.25], [101.97, 17.47], [101.82, 17.82], [101.47, 17.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2964936474652404}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9579152541099092}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.97668583514428, 25.338939874917628, 25.535300580319415, 25.632161528968652]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.9336053523773, 22.886708221616743, 23.315763582550403, 25.15764633988107]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2832485726040166, -1.9209839644251694, -1.6962653205938687, -1.8319198452101517]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2964936474652404, -2.413457144455265, -2.2760506836049217, -2.0722675065170506]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.3491522318584632, -1.9445540984817686, -1.6643658350776815, -1.7183800652718193]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.334531198008441, -2.362504886290418, -2.0838359507081154, -1.9431789133814354]}}