{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:42.541933", "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-May-07_to_2024-May-12_86.5_21.5"}, "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": 2024050000233}, "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": "May 07 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54319.42963972816}, "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": 21.5}, "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": 86.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "86.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 86.5}, "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": 21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[85.85, 21.75], [85.75, 22.0], [85.85, 22.25], [85.75, 22.5], [85.85, 22.75], [85.75, 23.0], [85.97, 23.53], [86.5, 23.75], [86.75, 23.65], [87.0, 23.75], [87.25, 23.65], [87.5, 23.75], [87.75, 23.65], [88.0, 23.75], [88.5, 23.54], [89.0, 23.75], [89.53, 23.53], [89.75, 23.0], [89.65, 22.75], [89.75, 22.5], [89.53, 21.97], [89.18, 21.82], [89.03, 21.47], [88.5, 21.25], [88.25, 21.35], [88.18, 21.32], [88.03, 20.97], [87.5, 20.75], [87.25, 20.85], [87.0, 20.75], [86.75, 20.85], [86.5, 20.75], [85.97, 20.97], [85.75, 21.5], [85.85, 21.75]]]]}}, "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": {"2024-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.47, 23.53], [89.0, 23.75], [89.53, 23.53], [89.75, 23.0], [89.53, 22.47], [89.0, 22.25], [88.47, 22.47], [88.25, 23.0], [88.47, 23.53]]]]}, "2024-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 22.0], [85.97, 22.53], [86.5, 22.75], [86.8, 22.63], [86.85, 22.75], [86.75, 23.0], [86.97, 23.53], [87.5, 23.75], [87.75, 23.65], [88.0, 23.75], [88.5, 23.54], [89.0, 23.75], [89.53, 23.53], [89.75, 23.0], [89.65, 22.75], [89.75, 22.5], [89.53, 21.97], [89.18, 21.82], [89.03, 21.47], [88.5, 21.25], [88.25, 21.35], [88.18, 21.32], [88.03, 20.97], [87.5, 20.75], [87.25, 20.85], [87.0, 20.75], [86.75, 20.85], [86.5, 20.75], [85.97, 20.97], [85.75, 21.5], [85.85, 21.75], [85.75, 22.0]]]]}, "2024-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 22.0], [85.85, 22.25], [85.75, 22.5], [85.85, 22.75], [85.75, 23.0], [85.97, 23.53], [86.5, 23.75], [86.75, 23.65], [87.0, 23.75], [87.25, 23.65], [87.5, 23.75], [87.75, 23.65], [88.0, 23.75], [88.5, 23.54], [89.0, 23.75], [89.53, 23.53], [89.75, 23.0], [89.65, 22.75], [89.75, 22.5], [89.53, 21.97], [89.18, 21.82], [89.03, 21.47], [88.5, 21.25], [88.25, 21.35], [88.18, 21.32], [88.03, 20.97], [87.5, 20.75], [87.25, 20.85], [87.0, 20.75], [86.75, 20.85], [86.5, 20.75], [85.97, 20.97], [85.75, 21.5], [85.85, 21.75], [85.75, 22.0]]]]}, "2024-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 22.0], [85.85, 22.25], [85.75, 22.5], [85.85, 22.75], [85.75, 23.0], [85.97, 23.53], [86.5, 23.75], [86.75, 23.65], [87.0, 23.75], [87.25, 23.65], [87.5, 23.75], [87.75, 23.65], [88.0, 23.75], [88.53, 23.53], [88.68, 23.18], [88.75, 23.15], [89.0, 23.25], [89.53, 23.03], [89.75, 22.5], [89.53, 21.97], [89.18, 21.82], [89.03, 21.47], [88.5, 21.25], [88.25, 21.35], [88.18, 21.32], [88.03, 20.97], [87.5, 20.75], [87.25, 20.85], [87.0, 20.75], [86.75, 20.85], [86.5, 20.75], [85.97, 20.97], [85.75, 21.5], [85.85, 21.75], [85.75, 22.0]]]]}, "2024-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.75, 22.0], [85.85, 22.25], [85.75, 22.5], [85.85, 22.75], [85.75, 23.0], [85.97, 23.53], [86.5, 23.75], [86.75, 23.65], [87.0, 23.75], [87.25, 23.65], [87.5, 23.75], [87.75, 23.65], [88.0, 23.75], [88.53, 23.53], [88.68, 23.18], [88.75, 23.15], [89.0, 23.25], [89.53, 23.03], [89.75, 22.5], [89.53, 21.97], [89.18, 21.82], [89.03, 21.47], [88.5, 21.25], [88.25, 21.35], [88.0, 21.25], [87.75, 21.35], [87.5, 21.25], [87.25, 21.35], [87.18, 21.32], [87.03, 20.97], [86.5, 20.75], [85.97, 20.97], [85.75, 21.5], [85.85, 21.75], [85.75, 22.0]]]]}, "2024-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.5, 20.75], [85.97, 20.97], [85.75, 21.5], [85.97, 22.03], [86.5, 22.25], [87.03, 22.03], [87.25, 21.5], [87.03, 20.97], [86.5, 20.75]]], [[[88.0, 22.25], [87.47, 22.47], [87.25, 23.0], [87.47, 23.53], [88.0, 23.75], [88.53, 23.53], [88.75, 23.0], [88.53, 22.47], [88.0, 22.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.848727090645184}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8825416056840765}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.254468992745956, 27.637682676276597, 27.0169910012915, 27.94916090288291, 27.774327949312124, 27.7317680760043]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.254468992745956, 26.517912747271907, 26.05830036086087, 26.07336829849396, 26.600101497997628, 27.554538510101224]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.490910758588484, -2.5473807652970897, -3.4515474905108388, -2.607782522260022, -2.870648388595452, -2.5869044936120247]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.490910758588484, -3.3745224172397457, -4.848727090645184, -3.564608487703481, -3.9271413016137444, -2.811818269348919]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3937248717604664, -1.858448505297201, -2.1854284395264725, -1.6765190540516166, -1.673567224468161, -1.4706078413927408]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3937248717604664, -2.740043526007408, -2.48766219456098, -2.2447670751855537, -2.154646059013903, -1.4883719394167876]}}