{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:29.357336", "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": "2021-Jul-21_to_2021-Jul-23_78.5_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": 2021070000802}, "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 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 155984.04198362213}, "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": 78.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 74.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 79.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.75, 16.0], [73.97, 16.53], [74.32, 16.68], [74.35, 16.75], [74.25, 17.0], [74.47, 17.53], [74.82, 17.68], [74.97, 18.03], [75.5, 18.25], [75.75, 18.15], [76.0, 18.25], [76.25, 18.15], [76.32, 18.18], [76.35, 18.25], [76.32, 18.32], [75.97, 18.47], [75.75, 19.0], [75.97, 19.53], [76.5, 19.75], [76.75, 19.65], [77.0, 19.75], [77.25, 19.65], [77.32, 19.68], [77.35, 19.75], [77.25, 20.0], [77.47, 20.53], [77.82, 20.68], [77.97, 21.03], [78.5, 21.25], [79.03, 21.03], [79.18, 20.68], [79.25, 20.65], [79.5, 20.75], [80.03, 20.53], [80.25, 20.0], [80.15, 19.75], [80.25, 19.5], [80.15, 19.25], [80.25, 19.0], [80.03, 18.47], [79.68, 18.32], [79.53, 17.97], [79.18, 17.82], [79.15, 17.75], [79.25, 17.5], [79.15, 17.25], [79.25, 17.0], [79.03, 16.47], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [77.2, 16.38], [77.15, 16.25], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.5, 14.75], [76.25, 14.85], [76.18, 14.82], [76.03, 14.47], [75.5, 14.25], [74.97, 14.47], [74.82, 14.82], [74.47, 14.97], [74.32, 15.32], [73.97, 15.47], [73.75, 16.0]]]]}, "2021-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.75, 16.0], [73.97, 16.53], [74.32, 16.68], [74.35, 16.75], [74.25, 17.0], [74.47, 17.53], [74.82, 17.68], [74.97, 18.03], [75.5, 18.25], [75.75, 18.15], [76.0, 18.25], [76.25, 18.15], [76.32, 18.18], [76.35, 18.25], [76.32, 18.32], [75.97, 18.47], [75.75, 19.0], [75.97, 19.53], [76.5, 19.75], [76.75, 19.65], [77.0, 19.75], [77.25, 19.65], [77.32, 19.68], [77.35, 19.75], [77.25, 20.0], [77.47, 20.53], [77.82, 20.68], [77.97, 21.03], [78.5, 21.25], [79.03, 21.03], [79.18, 20.68], [79.25, 20.65], [79.5, 20.75], [80.03, 20.53], [80.25, 20.0], [80.15, 19.75], [80.25, 19.5], [80.15, 19.25], [80.25, 19.0], [80.03, 18.47], [79.68, 18.32], [79.53, 17.97], [79.18, 17.82], [79.15, 17.75], [79.25, 17.5], [79.15, 17.25], [79.25, 17.0], [79.03, 16.47], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [77.2, 16.38], [77.15, 16.25], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.5, 14.75], [76.25, 14.85], [76.18, 14.82], [76.03, 14.47], [75.5, 14.25], [74.97, 14.47], [74.82, 14.82], [74.47, 14.97], [74.32, 15.32], [73.97, 15.47], [73.75, 16.0]]]]}, "2021-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.75, 16.0], [73.97, 16.53], [74.32, 16.68], [74.35, 16.75], [74.25, 17.0], [74.47, 17.53], [74.82, 17.68], [74.97, 18.03], [75.5, 18.25], [75.75, 18.15], [76.0, 18.25], [76.25, 18.15], [76.32, 18.18], [76.35, 18.25], [76.32, 18.32], [75.97, 18.47], [75.75, 19.0], [75.97, 19.53], [76.5, 19.75], [76.75, 19.65], [77.0, 19.75], [77.25, 19.65], [77.32, 19.68], [77.35, 19.75], [77.25, 20.0], [77.47, 20.53], [77.82, 20.68], [77.97, 21.03], [78.5, 21.25], [79.03, 21.03], [79.18, 20.68], [79.25, 20.65], [79.5, 20.75], [80.03, 20.53], [80.25, 20.0], [80.15, 19.75], [80.25, 19.5], [80.15, 19.25], [80.25, 19.0], [80.03, 18.47], [79.68, 18.32], [79.53, 17.97], [79.18, 17.82], [79.15, 17.75], [79.25, 17.5], [79.15, 17.25], [79.25, 17.0], [79.03, 16.47], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [77.2, 16.38], [77.15, 16.25], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.5, 14.75], [76.25, 14.85], [76.18, 14.82], [76.03, 14.47], [75.5, 14.25], [74.97, 14.47], [74.82, 14.82], [74.47, 14.97], [74.32, 15.32], [73.97, 15.47], [73.75, 16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.504081669340394}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.269238748700431}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.97449178088874, 23.892023009995967, 24.203153383139124]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.933106687220175, 21.975997852344506, 21.512546245821852]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3682269653565315, -2.393211301763903, -2.046277978980858]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.03562187716318, -3.504081669340394, -2.8061726742340056]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7825105986131928, -1.811667859723758, -1.5632452828950532]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1881979753522747, -2.550126944747357, -1.887623190931872]}}