{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:59.209750", "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-23_to_2022-Sep-26_104.5_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": 2022090000855}, "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 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2022"}, "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": 50582.96522755081}, "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": 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": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 106.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[102.97, 16.03], [103.32, 16.18], [103.47, 16.53], [104.0, 16.75], [104.25, 16.65], [104.32, 16.68], [104.47, 17.03], [104.82, 17.18], [104.97, 17.53], [105.5, 17.75], [106.03, 17.53], [106.18, 17.18], [106.53, 17.03], [106.75, 16.5], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.68, 15.32], [105.53, 14.97], [105.18, 14.82], [105.03, 14.47], [104.5, 14.25], [104.25, 14.35], [104.0, 14.25], [103.75, 14.35], [103.68, 14.32], [103.53, 13.97], [103.0, 13.75], [102.47, 13.97], [102.25, 14.5], [102.35, 14.75], [102.25, 15.0], [102.47, 15.53], [102.82, 15.68], [102.97, 16.03]]]]}}, "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": {"2022-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.97, 16.53], [104.32, 16.68], [104.47, 17.03], [104.82, 17.18], [104.97, 17.53], [105.5, 17.75], [106.03, 17.53], [106.18, 17.18], [106.53, 17.03], [106.75, 16.5], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.5, 15.25], [105.25, 15.35], [105.18, 15.32], [105.03, 14.97], [104.5, 14.75], [104.0, 14.96], [103.5, 14.75], [102.97, 14.97], [102.75, 15.5], [102.97, 16.03], [103.5, 16.25], [103.8, 16.13], [103.97, 16.53]]]]}, "2022-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.25, 15.0], [102.47, 15.53], [102.82, 15.68], [102.97, 16.03], [103.32, 16.18], [103.47, 16.53], [104.0, 16.75], [104.25, 16.65], [104.32, 16.68], [104.47, 17.03], [104.82, 17.18], [104.97, 17.53], [105.5, 17.75], [106.03, 17.53], [106.18, 17.18], [106.53, 17.03], [106.75, 16.5], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.68, 15.32], [105.53, 14.97], [105.18, 14.82], [105.03, 14.47], [104.5, 14.25], [104.25, 14.35], [104.0, 14.25], [103.75, 14.35], [103.68, 14.32], [103.53, 13.97], [103.0, 13.75], [102.47, 13.97], [102.25, 14.5], [102.35, 14.75], [102.25, 15.0]]]]}, "2022-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.25, 15.0], [102.47, 15.53], [102.82, 15.68], [102.97, 16.03], [103.32, 16.18], [103.47, 16.53], [104.0, 16.75], [104.25, 16.65], [104.32, 16.68], [104.47, 17.03], [104.82, 17.18], [104.97, 17.53], [105.5, 17.75], [106.03, 17.53], [106.18, 17.18], [106.53, 17.03], [106.75, 16.5], [106.53, 15.97], [106.18, 15.82], [106.03, 15.47], [105.68, 15.32], [105.53, 14.97], [105.18, 14.82], [105.03, 14.47], [104.5, 14.25], [104.25, 14.35], [104.0, 14.25], [103.75, 14.35], [103.68, 14.32], [103.53, 13.97], [103.0, 13.75], [102.47, 13.97], [102.25, 14.5], [102.35, 14.75], [102.25, 15.0]]]]}, "2022-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.25, 15.0], [102.47, 15.53], [102.82, 15.68], [102.97, 16.03], [103.32, 16.18], [103.47, 16.53], [104.0, 16.75], [104.53, 16.53], [104.68, 16.18], [104.75, 16.15], [105.0, 16.25], [105.53, 16.03], [105.75, 15.5], [105.53, 14.97], [105.18, 14.82], [105.03, 14.47], [104.5, 14.25], [104.25, 14.35], [104.0, 14.25], [103.75, 14.35], [103.68, 14.32], [103.53, 13.97], [103.0, 13.75], [102.47, 13.97], [102.25, 14.5], [102.35, 14.75], [102.25, 15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1862115035920624}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.548342246043718}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.212719838902444, 25.578469222495244, 25.606663315843377, 25.86399661756127]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.002803650922203, 24.13883654901514, 24.219100858034096, 24.98385723470784]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5748009324380834, -1.5011815469497947, -1.5382251775014613, -1.621901633270295]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9833039654555478, -2.1862115035920624, -1.8747501117482557, -2.1286077926141047]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4063415389294778, -1.416307430171893, -1.481321198961335, -1.7239392217892984]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6258839856869456, -1.7743374831230294, -1.7517525594437664, -2.375661449790389]}}