{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:38.274821", "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": "2013-Feb-23_to_2013-Feb-25_81.0_12.5"}, "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": 2013020000816}, "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": "February 23 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 2013"}, "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": 60143.875630078226}, "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": 12.5}, "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": 81.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.97, 14.47], [78.75, 15.0], [78.97, 15.53], [79.5, 15.75], [79.75, 15.65], [80.0, 15.75], [80.25, 15.65], [80.5, 15.75], [80.75, 15.65], [81.0, 15.75], [81.53, 15.53], [81.75, 15.0], [81.65, 14.75], [81.75, 14.5], [81.65, 14.25], [81.68, 14.18], [82.03, 14.03], [82.25, 13.5], [82.15, 13.25], [82.25, 13.0], [82.15, 12.75], [82.25, 12.5], [82.15, 12.25], [82.25, 12.0], [82.03, 11.47], [81.68, 11.32], [81.53, 10.97], [81.0, 10.75], [80.75, 10.85], [80.5, 10.75], [79.97, 10.97], [79.75, 11.5], [79.85, 11.75], [79.75, 12.0], [79.85, 12.25], [79.75, 12.5], [79.97, 13.03], [80.32, 13.18], [80.35, 13.25], [80.32, 13.32], [79.97, 13.47], [79.75, 14.0], [79.85, 14.25], [79.82, 14.32], [79.75, 14.35], [79.5, 14.25], [78.97, 14.47]]]]}, "2013-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.97, 14.47], [78.75, 15.0], [78.97, 15.53], [79.5, 15.75], [79.75, 15.65], [80.0, 15.75], [80.25, 15.65], [80.5, 15.75], [80.75, 15.65], [81.0, 15.75], [81.53, 15.53], [81.75, 15.0], [81.65, 14.75], [81.75, 14.5], [81.65, 14.25], [81.68, 14.18], [82.03, 14.03], [82.25, 13.5], [82.15, 13.25], [82.25, 13.0], [82.15, 12.75], [82.25, 12.5], [82.15, 12.25], [82.25, 12.0], [82.03, 11.47], [81.68, 11.32], [81.53, 10.97], [81.0, 10.75], [80.75, 10.85], [80.5, 10.75], [79.97, 10.97], [79.75, 11.5], [79.85, 11.75], [79.75, 12.0], [79.85, 12.25], [79.75, 12.5], [79.97, 13.03], [80.32, 13.18], [80.35, 13.25], [80.32, 13.32], [79.97, 13.47], [79.75, 14.0], [79.85, 14.25], [79.82, 14.32], [79.75, 14.35], [79.5, 14.25], [78.97, 14.47]]]]}, "2013-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.97, 14.47], [78.75, 15.0], [78.97, 15.53], [79.5, 15.75], [79.75, 15.65], [80.0, 15.75], [80.25, 15.65], [80.5, 15.75], [80.75, 15.65], [81.0, 15.75], [81.53, 15.53], [81.75, 15.0], [81.65, 14.75], [81.75, 14.5], [81.65, 14.25], [81.68, 14.18], [82.03, 14.03], [82.25, 13.5], [82.15, 13.25], [82.25, 13.0], [82.15, 12.75], [82.25, 12.5], [82.15, 12.25], [82.25, 12.0], [82.03, 11.47], [81.68, 11.32], [81.53, 10.97], [81.0, 10.75], [80.75, 10.85], [80.5, 10.75], [79.97, 10.97], [79.75, 11.5], [79.85, 11.75], [79.75, 12.0], [79.85, 12.25], [79.75, 12.5], [79.97, 13.03], [80.32, 13.18], [80.35, 13.25], [80.32, 13.32], [79.97, 13.47], [79.75, 14.0], [79.85, 14.25], [79.82, 14.32], [79.75, 14.35], [79.5, 14.25], [78.97, 14.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4758142841378685}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9967429180643497}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.403814883358223, 25.186725727541727, 25.241399386581577]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.004758973284368, 24.339458667189604, 24.638454190455775]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8385004807990584, -1.0859802408971888, -1.065748032496802]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7676684294398797, -2.4758142841378685, -2.000322752833256]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.333786984762526, -1.7131362163577097, -1.7015896884236024]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.474529627310577, -1.9239060718039291, -1.987450822104718]}}