{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:12.882245", "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": "2025-Jul-23_to_2025-Jul-26_79.0_17.0"}, "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": 2025070000838}, "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 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 26 2025"}, "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": 79447.14204724695}, "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": 17.0}, "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": 79.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "79.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 76.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 80.75}, "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": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, 17.53], [79.0, 17.75], [79.25, 17.65], [79.5, 17.75], [80.03, 17.53], [80.25, 17.0], [80.15, 16.75], [80.18, 16.68], [80.53, 16.53], [80.75, 16.0], [80.53, 15.47], [80.0, 15.25], [79.75, 15.35], [79.5, 15.25], [78.97, 15.47], [78.82, 15.82], [78.47, 15.97], [78.25, 16.5], [78.35, 16.75], [78.25, 17.0], [78.47, 17.53]]]]}, "2025-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.25, 18.5], [76.47, 19.03], [77.0, 19.25], [77.25, 19.15], [77.32, 19.18], [77.47, 19.53], [78.0, 19.75], [78.3, 19.63], [78.47, 20.03], [79.0, 20.25], [79.53, 20.03], [79.68, 19.68], [80.03, 19.53], [80.25, 19.0], [80.15, 18.75], [80.25, 18.5], [80.15, 18.25], [80.18, 18.18], [80.25, 18.15], [80.5, 18.25], [81.03, 18.03], [81.25, 17.5], [81.03, 16.97], [80.68, 16.82], [80.54, 16.5], [80.75, 16.0], [80.53, 15.47], [80.0, 15.25], [79.75, 15.35], [79.5, 15.25], [78.97, 15.47], [78.82, 15.82], [78.47, 15.97], [78.25, 16.5], [78.35, 16.75], [78.32, 16.82], [77.97, 16.97], [77.82, 17.32], [77.75, 17.35], [77.5, 17.25], [76.97, 17.47], [76.82, 17.82], [76.47, 17.97], [76.25, 18.5]]]]}, "2025-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.25, 18.5], [76.47, 19.03], [77.0, 19.25], [77.25, 19.15], [77.32, 19.18], [77.47, 19.53], [78.0, 19.75], [78.3, 19.63], [78.47, 20.03], [79.0, 20.25], [79.53, 20.03], [79.68, 19.68], [80.03, 19.53], [80.25, 19.0], [80.15, 18.75], [80.25, 18.5], [80.15, 18.25], [80.18, 18.18], [80.25, 18.15], [80.5, 18.25], [81.03, 18.03], [81.25, 17.5], [81.03, 16.97], [80.68, 16.82], [80.54, 16.5], [80.75, 16.0], [80.53, 15.47], [80.0, 15.25], [79.75, 15.35], [79.5, 15.25], [78.97, 15.47], [78.82, 15.82], [78.47, 15.97], [78.25, 16.5], [78.35, 16.75], [78.32, 16.82], [77.97, 16.97], [77.82, 17.32], [77.75, 17.35], [77.5, 17.25], [76.97, 17.47], [76.82, 17.82], [76.47, 17.97], [76.25, 18.5]]]]}, "2025-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.25, 18.5], [76.47, 19.03], [77.0, 19.25], [77.25, 19.15], [77.32, 19.18], [77.47, 19.53], [78.0, 19.75], [78.3, 19.63], [78.47, 20.03], [79.0, 20.25], [79.53, 20.03], [79.68, 19.68], [80.03, 19.53], [80.25, 19.0], [80.15, 18.75], [80.25, 18.5], [80.15, 18.25], [80.18, 18.18], [80.25, 18.15], [80.5, 18.25], [81.03, 18.03], [81.25, 17.5], [81.03, 16.97], [80.68, 16.82], [80.53, 16.47], [80.0, 16.25], [79.75, 16.35], [79.5, 16.25], [79.25, 16.35], [79.0, 16.25], [78.47, 16.47], [78.32, 16.82], [77.97, 16.97], [77.82, 17.32], [77.75, 17.35], [77.5, 17.25], [76.97, 17.47], [76.82, 17.82], [76.47, 17.97], [76.25, 18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.4847217873421528}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.45061240435649}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.497850884331626, 24.97638431125216, 25.31202181592397, 24.80544206923338]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.316929117838583, 23.46428578694662, 23.870528157552087, 23.36338831583663]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.507987927962953, -2.6248444557701895, -2.2670953340456355, -2.4465446812514653]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.666926842655357, -3.4847217873421528, -2.5617503443352234, -2.731803123806799]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.583797888470916, -1.790270421606631, -1.5715327311767642, -1.7396953052369812]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7528023442945908, -2.1758406054390798, -1.771975555123564, -1.9422708568212734]}}