{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:56.944953", "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": "2024-Sep-14_to_2024-Sep-17_87.5_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": 2024090000337}, "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 14 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2024"}, "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": 130374.72955563557}, "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": 87.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "87.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 89.0}, "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": 25.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[84.32, 24.18], [84.35, 24.25], [84.25, 24.5], [84.47, 25.03], [85.0, 25.25], [85.25, 25.15], [85.5, 25.25], [85.75, 25.15], [86.0, 25.25], [86.25, 25.15], [86.32, 25.18], [86.47, 25.53], [87.0, 25.75], [87.53, 25.53], [87.68, 25.18], [87.75, 25.15], [88.0, 25.25], [88.25, 25.15], [88.5, 25.25], [89.03, 25.03], [89.18, 24.68], [89.53, 24.53], [89.75, 24.0], [89.65, 23.75], [89.75, 23.5], [89.65, 23.25], [89.75, 23.0], [89.53, 22.47], [89.18, 22.32], [89.03, 21.97], [88.5, 21.75], [88.25, 21.85], [88.18, 21.82], [88.03, 21.47], [87.5, 21.25], [86.97, 21.47], [86.82, 21.82], [86.75, 21.85], [86.68, 21.82], [86.53, 21.47], [86.0, 21.25], [85.47, 21.47], [85.25, 22.0], [85.35, 22.25], [85.3, 22.38], [85.0, 22.25], [84.47, 22.47], [84.32, 22.82], [84.25, 22.85], [84.18, 22.82], [84.03, 22.47], [83.5, 22.25], [82.97, 22.47], [82.75, 23.0], [82.97, 23.53], [83.32, 23.68], [83.47, 24.03], [84.0, 24.25], [84.25, 24.15], [84.32, 24.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.25, 24.0], [84.35, 24.25], [84.25, 24.5], [84.47, 25.03], [85.0, 25.25], [85.25, 25.15], [85.5, 25.25], [85.75, 25.15], [86.0, 25.25], [86.25, 25.15], [86.32, 25.18], [86.47, 25.53], [87.0, 25.75], [87.53, 25.53], [87.68, 25.18], [87.75, 25.15], [88.0, 25.25], [88.25, 25.15], [88.5, 25.25], [89.03, 25.03], [89.18, 24.68], [89.53, 24.53], [89.75, 24.0], [89.65, 23.75], [89.75, 23.5], [89.65, 23.25], [89.75, 23.0], [89.53, 22.47], [89.18, 22.32], [89.03, 21.97], [88.5, 21.75], [88.25, 21.85], [88.18, 21.82], [88.03, 21.47], [87.5, 21.25], [86.97, 21.47], [86.82, 21.82], [86.75, 21.85], [86.68, 21.82], [86.53, 21.47], [86.0, 21.25], [85.47, 21.47], [85.25, 22.0], [85.35, 22.25], [85.25, 22.5], [85.35, 22.75], [85.32, 22.82], [85.25, 22.85], [85.0, 22.75], [84.47, 22.97], [84.25, 23.5], [84.35, 23.75], [84.25, 24.0]]]]}, 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[83.47, 24.03]]]]}, "2024-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.47, 24.03], [84.0, 24.25], [84.25, 24.15], [84.32, 24.18], [84.35, 24.25], [84.25, 24.5], [84.47, 25.03], [85.0, 25.25], [85.25, 25.15], [85.5, 25.25], [85.75, 25.15], [86.0, 25.25], [86.25, 25.15], [86.32, 25.18], [86.47, 25.53], [87.0, 25.75], [87.53, 25.53], [87.68, 25.18], [87.75, 25.15], [88.0, 25.25], [88.25, 25.15], [88.5, 25.25], [89.03, 25.03], [89.18, 24.68], [89.53, 24.53], [89.75, 24.0], [89.65, 23.75], [89.75, 23.5], [89.65, 23.25], [89.75, 23.0], [89.53, 22.47], [89.18, 22.32], [89.03, 21.97], [88.5, 21.75], [88.25, 21.85], [88.18, 21.82], [88.03, 21.47], [87.5, 21.25], [86.97, 21.47], [86.82, 21.82], [86.75, 21.85], [86.68, 21.82], [86.53, 21.47], [86.0, 21.25], [85.47, 21.47], [85.25, 22.0], [85.35, 22.25], [85.3, 22.38], [85.0, 22.25], [84.47, 22.47], [84.32, 22.82], [84.25, 22.85], [84.18, 22.82], [84.03, 22.47], [83.5, 22.25], [82.97, 22.47], [82.75, 23.0], [82.97, 23.53], [83.32, 23.68], [83.47, 24.03]]]]}, "2024-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.47, 24.03], [84.0, 24.25], [84.25, 24.15], [84.5, 24.25], [85.03, 24.03], [85.18, 23.68], [85.53, 23.53], [85.75, 23.0], [85.53, 22.47], [85.0, 22.25], [84.47, 22.47], [84.32, 22.82], [84.25, 22.85], [84.18, 22.82], [84.03, 22.47], [83.5, 22.25], [82.97, 22.47], [82.75, 23.0], [82.97, 23.53], [83.32, 23.68], [83.47, 24.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.190002857724096}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.268507450620638}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.7305070301843, 25.367413540162943, 25.61560658993932, 23.464278157552087]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.789189910888695, 22.754776255289755, 22.250966644287132, 22.693892415364587]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3015683217860037, -2.4205417561493805, -2.1456563784811538, -1.5857611194078345]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.957566446700014, -3.190002857724096, -2.670715997209072, -2.2103445114723286]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8597870504180603, -2.0114882560643013, -1.8465263272625996, -1.5759458812379885]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4691866979031754, -2.598002926830735, -2.3347133642417264, -2.227453805672772]}}