{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:50.528298", "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-Jun-23_to_2025-Jun-26_83.5_18.5"}, "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": 2025060000706}, "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": "June 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 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": 58623.94198952669}, "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": ["Bay of Bengal"]}, "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": 18.5}, "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": 83.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "83.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 81.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 86.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "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": {"2025-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.97, 19.53], [82.32, 19.68], [82.47, 20.03], [83.0, 20.25], [83.53, 20.03], [83.68, 19.68], [83.75, 19.65], [84.0, 19.75], [84.25, 19.65], [84.5, 19.75], [84.75, 19.65], [85.0, 19.75], [85.53, 19.53], [85.68, 19.18], [86.03, 19.03], [86.18, 18.68], [86.53, 18.53], [86.75, 18.0], [86.53, 17.47], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.8, 17.88], [84.5, 17.75], [84.25, 17.85], [84.18, 17.82], [84.03, 17.47], [83.68, 17.32], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.5, 16.75], [82.25, 16.85], [82.0, 16.75], [81.47, 16.97], [81.25, 17.5], [81.47, 18.03], [81.88, 18.2], [81.75, 18.5], [81.85, 18.75], [81.75, 19.0], [81.97, 19.53]]]]}, "2025-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 18.47], [80.75, 19.0], [80.97, 19.53], [81.5, 19.75], [81.75, 19.65], [82.0, 19.75], [82.25, 19.65], [82.32, 19.68], [82.47, 20.03], [83.0, 20.25], [83.53, 20.03], [83.68, 19.68], [83.75, 19.65], [84.0, 19.75], [84.25, 19.65], [84.5, 19.75], [84.75, 19.65], [85.0, 19.75], [85.53, 19.53], [85.68, 19.18], [86.03, 19.03], [86.18, 18.68], [86.53, 18.53], [86.75, 18.0], [86.53, 17.47], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.8, 17.88], [84.5, 17.75], [84.25, 17.85], [84.18, 17.82], [84.03, 17.47], [83.68, 17.32], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.5, 16.75], [82.25, 16.85], [82.0, 16.75], [81.47, 16.97], [81.25, 17.5], [81.47, 18.03], [81.88, 18.2], [81.82, 18.32], [81.75, 18.35], [81.5, 18.25], [80.97, 18.47]]]]}, "2025-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 18.47], [80.75, 19.0], [80.97, 19.53], [81.5, 19.75], [81.75, 19.65], [82.0, 19.75], [82.25, 19.65], [82.32, 19.68], [82.47, 20.03], [83.0, 20.25], [83.53, 20.03], [83.68, 19.68], [83.75, 19.65], [84.0, 19.75], [84.25, 19.65], [84.5, 19.75], [84.75, 19.65], [85.0, 19.75], [85.53, 19.53], [85.68, 19.18], [86.03, 19.03], [86.18, 18.68], [86.53, 18.53], [86.75, 18.0], [86.53, 17.47], [86.0, 17.25], [85.75, 17.35], [85.5, 17.25], [84.97, 17.47], [84.8, 17.88], [84.5, 17.75], [84.25, 17.85], [84.18, 17.82], [84.03, 17.47], [83.68, 17.32], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.5, 16.75], [82.25, 16.85], [82.0, 16.75], [81.47, 16.97], [81.25, 17.5], [81.47, 18.03], [81.88, 18.2], [81.82, 18.32], [81.75, 18.35], [81.5, 18.25], [80.97, 18.47]]]]}, "2025-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 18.47], [80.75, 19.0], [80.97, 19.53], [81.5, 19.75], [81.75, 19.65], [82.0, 19.75], [82.25, 19.65], [82.5, 19.75], [83.0, 19.54], [83.5, 19.75], [84.03, 19.53], [84.18, 19.18], [84.53, 19.03], [84.75, 18.5], [84.53, 17.97], [84.18, 17.82], [84.03, 17.47], [83.68, 17.32], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.5, 16.75], [82.25, 16.85], [82.0, 16.75], [81.47, 16.97], [81.25, 17.5], [81.47, 18.03], [81.88, 18.2], [81.82, 18.32], [81.75, 18.35], [81.5, 18.25], [80.97, 18.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5061467185923334}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.082001824155623}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.107993062337243, 26.112607574462857, 25.48396606445317, 25.33249859280062]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.20861968994143, 22.380612945556663, 21.555047607421898, 22.30266596476241]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.072656833000931, -1.8029007471521425, -2.357670272427586, -2.101740358773521]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.383234730902757, -2.556967362629905, -3.5061467185923334, -2.795592113466057]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6346347024376935, -1.448308577356423, -1.8997442574292116, -1.4859304084456326]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0579365041902835, -1.6123392201393696, -2.278340823050206, -1.7892958741983802]}}