{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:44.598738", "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-Jul-18_to_2024-Jul-22_81.5_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": 2024070000565}, "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": "July 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 22 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 76892.71550783058}, "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": ["India"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 81.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 78.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 83.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[83.03, 15.97], [82.5, 15.75], [82.25, 15.85], [82.18, 15.82], [82.03, 15.47], [81.5, 15.25], [81.25, 15.35], [81.0, 15.25], [80.75, 15.35], [80.5, 15.25], [79.97, 15.47], [79.82, 15.82], [79.75, 15.85], [79.5, 15.75], [78.97, 15.97], [78.82, 16.32], [78.75, 16.35], [78.5, 16.25], [77.97, 16.47], [77.75, 17.0], [77.97, 17.53], [78.32, 17.68], [78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.25, 18.15], [80.5, 18.25], [80.75, 18.15], [81.0, 18.25], [81.25, 18.15], [81.5, 18.25], [82.0, 18.04], [82.5, 18.25], [82.75, 18.15], [83.0, 18.25], [83.53, 18.03], [83.75, 17.5], [83.53, 16.97], [83.13, 16.8], [83.25, 16.5], [83.03, 15.97]]]]}}, "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": {"2024-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.47, 17.03], [81.0, 17.25], [81.25, 17.15], [81.5, 17.25], [81.75, 17.15], [82.0, 17.25], [82.25, 17.15], [82.5, 17.25], [83.03, 17.03], [83.25, 16.5], [83.03, 15.97], [82.5, 15.75], [82.25, 15.85], [82.18, 15.82], [82.03, 15.47], [81.5, 15.25], [81.25, 15.35], [81.0, 15.25], [80.75, 15.35], [80.5, 15.25], [79.97, 15.47], [79.75, 16.0], [79.97, 16.53], [80.32, 16.68], [80.47, 17.03]]]]}, "2024-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.25, 18.15], [80.5, 18.25], [80.75, 18.15], [81.0, 18.25], [81.25, 18.15], [81.5, 18.25], [82.0, 18.04], [82.5, 18.25], [82.75, 18.15], [83.0, 18.25], [83.53, 18.03], [83.75, 17.5], [83.53, 16.97], [83.13, 16.8], [83.25, 16.5], [83.03, 15.97], [82.5, 15.75], [82.25, 15.85], [82.18, 15.82], [82.03, 15.47], [81.5, 15.25], [81.25, 15.35], [81.0, 15.25], [80.75, 15.35], [80.5, 15.25], [79.97, 15.47], [79.82, 15.82], [79.75, 15.85], [79.5, 15.75], [78.97, 15.97], [78.82, 16.32], [78.75, 16.35], [78.5, 16.25], [77.97, 16.47], [77.75, 17.0], [77.97, 17.53], [78.32, 17.68], [78.47, 18.03]]]]}, "2024-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.25, 18.15], [80.5, 18.25], [80.75, 18.15], [81.0, 18.25], [81.25, 18.15], [81.5, 18.25], [82.0, 18.04], [82.5, 18.25], [82.75, 18.15], [83.0, 18.25], [83.53, 18.03], [83.75, 17.5], [83.53, 16.97], [83.13, 16.8], [83.25, 16.5], [83.03, 15.97], [82.5, 15.75], [82.25, 15.85], [82.18, 15.82], [82.03, 15.47], [81.5, 15.25], [81.25, 15.35], [81.0, 15.25], [80.75, 15.35], [80.5, 15.25], [79.97, 15.47], [79.82, 15.82], [79.75, 15.85], [79.5, 15.75], [78.97, 15.97], [78.82, 16.32], [78.75, 16.35], [78.5, 16.25], [77.97, 16.47], [77.75, 17.0], [77.97, 17.53], [78.32, 17.68], [78.47, 18.03]]]]}, "2024-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.25, 18.15], [80.5, 18.25], [80.75, 18.15], [81.0, 18.25], [81.25, 18.15], [81.5, 18.25], [82.0, 18.04], [82.5, 18.25], [82.75, 18.15], [83.0, 18.25], [83.53, 18.03], [83.75, 17.5], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.68, 16.82], [82.65, 16.75], [82.75, 16.5], [82.53, 15.97], [82.0, 15.75], [81.75, 15.85], [81.68, 15.82], [81.53, 15.47], [81.0, 15.25], [80.75, 15.35], [80.5, 15.25], [79.97, 15.47], [79.82, 15.82], [79.75, 15.85], [79.5, 15.75], [78.97, 15.97], [78.82, 16.32], [78.75, 16.35], [78.5, 16.25], [77.97, 16.47], [77.75, 17.0], [77.97, 17.53], [78.32, 17.68], [78.47, 18.03]]]]}, "2024-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.47, 18.03], [83.0, 18.25], [83.53, 18.03], [83.75, 17.5], [83.53, 16.97], [83.0, 16.75], [82.47, 16.97], [82.25, 17.5], [82.47, 18.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.536759690518238}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5353663461551603}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.290719756770386, 25.866104223384525, 25.895965441793066, 26.261735441623614, 27.289203522636058]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.88333158538984, 23.81974061588909, 23.23479344718777, 23.757654818174217, 27.289203522636058]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9704004769569028, -2.7811516347530234, -2.7072096873839198, -2.2925203381023116, -1.4600872483191552]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5450827529494404, -3.4947666757773845, -3.536759690518238, -2.7591348166611738, -1.4600872483191552]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6755080088364878, -2.045060434096987, -1.98150681504208, -1.6405725761911292, -1.39234334340209]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8045557511356736, -2.4072124879026884, -2.359891756340548, -1.8897578440591047, -1.39234334340209]}}