{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:25.103868", "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-21_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": 2024070000501}, "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 21 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": 53253.74115248425}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "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": 78.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 82.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "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": [[[[79.97, 15.47], [79.75, 16.0], [79.97, 16.53], [80.5, 16.75], [80.75, 16.65], [80.82, 16.68], [80.97, 17.03], [81.5, 17.25], [81.75, 17.15], [82.0, 17.25], [82.53, 17.03], [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]]]]}, "2024-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.68, 17.68], [80.75, 17.65], [81.0, 17.75], [81.25, 17.65], [81.5, 17.75], [81.75, 17.65], [82.0, 17.75], [82.53, 17.53], [82.75, 17.0], [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], [79.47, 15.97], [79.32, 16.32], [79.25, 16.35], [79.0, 16.25], [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]]]]}, "2024-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.68, 17.68], [80.75, 17.65], [81.0, 17.75], [81.25, 17.65], [81.5, 17.75], [81.75, 17.65], [82.0, 17.75], [82.53, 17.53], [82.75, 17.0], [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], [79.47, 15.97], [79.32, 16.32], [79.25, 16.35], [79.0, 16.25], [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]]]]}, "2024-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.68, 17.68], [80.75, 17.65], [81.0, 17.75], [81.25, 17.65], [81.5, 17.75], [81.75, 17.65], [82.0, 17.75], [82.53, 17.53], [82.75, 17.0], [82.53, 16.47], [82.18, 16.32], [82.03, 15.97], [81.68, 15.82], [81.53, 15.47], [81.0, 15.25], [80.47, 15.47], [80.32, 15.82], [80.25, 15.85], [80.0, 15.75], [79.47, 15.97], [79.32, 16.32], [79.25, 16.35], [79.0, 16.25], [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]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.4248736482315962}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6971250270918157}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.17123651688803, 25.807882674202517, 25.732301506004774, 26.16581866978447]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.88333158538984, 23.81974061588909, 23.23479344718777, 23.757654818174217]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2067403462845903, -2.885668146912448, -2.908735265708654, -2.3695486690514684]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4336769976363257, -3.356116381853667, -3.4248736482315962, -2.6868680738514854]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5828416132525358, -1.8977679987739033, -1.9253051385588458, -1.56825887932985]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6370496195335826, -2.180361302929985, -2.1865883451669585, -1.7124628737336975]}}