{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:52.178977", "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-12_to_2022-Sep-15_90.0_23.0"}, "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": 2022090000505}, "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 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 15 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": 87782.77007538688}, "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": ["Bangladesh", "India"]}, "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": 23.0}, "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": 90.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 87.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 92.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[90.5, 21.25], [90.25, 21.35], [90.0, 21.25], [89.75, 21.35], [89.5, 21.25], [88.97, 21.47], [88.75, 22.0], [88.85, 22.25], 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the boundary of the event at each time step", "value": {"2022-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.0, 24.75], [86.47, 24.97], [86.25, 25.5], [86.47, 26.03], [87.0, 26.25], [87.25, 26.15], [87.5, 26.25], [88.03, 26.03], [88.18, 25.68], [88.25, 25.65], [88.5, 25.75], [89.03, 25.53], [89.18, 25.18], [89.25, 25.15], [89.5, 25.25], [90.03, 25.03], [90.18, 24.68], [90.25, 24.65], [90.5, 24.75], [90.75, 24.65], [91.0, 24.75], [91.53, 24.53], [91.68, 24.18], [92.03, 24.03], [92.18, 23.68], [92.53, 23.53], [92.75, 23.0], [92.65, 22.75], [92.75, 22.5], [92.53, 21.97], [92.0, 21.75], [91.5, 21.96], [91.18, 21.82], [91.03, 21.47], [90.5, 21.25], [90.25, 21.35], [90.0, 21.25], [89.75, 21.35], [89.5, 21.25], [88.97, 21.47], [88.75, 22.0], [88.85, 22.25], [88.75, 22.5], [88.85, 22.75], [88.75, 23.0], [88.85, 23.25], [88.75, 23.5], [88.85, 23.75], [88.82, 23.82], [88.47, 23.97], [88.32, 24.32], [88.25, 24.35], [88.0, 24.25], [87.47, 24.47], [87.32, 24.82], [87.25, 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26.53]]]]}, "2022-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.5, 21.25], [89.97, 21.47], [89.75, 22.0], [89.97, 22.53], [90.5, 22.75], [91.03, 22.53], [91.25, 22.0], [91.03, 21.47], [90.5, 21.25]]], [[[86.97, 25.47], [86.75, 26.0], [86.97, 26.53], [87.5, 26.75], [87.75, 26.65], [88.0, 26.75], [88.53, 26.53], [88.75, 26.0], [88.53, 25.47], [88.0, 25.25], [87.75, 25.35], [87.5, 25.25], [86.97, 25.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7453442168011293}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9459696286542323}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.599730071060662, 26.256452029009722, 26.55201001080718, 27.050806083642613]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.853700249944552, 25.804382200455905, 25.94466102333928, 26.873293766443282]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7841579785154424, -2.179582428191041, -1.9155194743860362, -1.4108015788868709]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.181528778510824, -2.7453442168011293, -2.4191903090810456, -1.7006762536360611]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.636111064355783, -1.9702617886505005, -1.6700902765975885, -1.2392333668604394]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9854765128450766, -2.4790051255633028, -2.050837867736775, -1.3891972328788318]}}