{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:10.275361", "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": "2020-Mar-22_to_2020-Mar-25_51.5_28.5"}, "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": 2020030000566}, "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": "March 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 2020"}, "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": 67220.7932278794}, "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": ["Iran"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.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": 28.5}, "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": 51.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "51.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 49.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.97, 31.53], [49.5, 31.75], [49.75, 31.65], [50.0, 31.75], 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27.5], [53.53, 26.97], [53.0, 26.75], [52.47, 26.97], [52.32, 27.32], [52.25, 27.35], [52.0, 27.25], [51.75, 27.35], [51.5, 27.25], [50.97, 27.47], [50.75, 28.0], [50.85, 28.25], [50.75, 28.5], [50.85, 28.75], [50.82, 28.82], [50.47, 28.97], [50.32, 29.32], [49.97, 29.47], [49.82, 29.82], [49.75, 29.85], [49.5, 29.75], [48.97, 29.97], [48.75, 30.5], [48.85, 30.75], [48.75, 31.0], [48.97, 31.53]]]]}, "2020-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.97, 31.53], [49.5, 31.75], [49.75, 31.65], [50.0, 31.75], [50.25, 31.65], [50.5, 31.75], [51.03, 31.53], [51.18, 31.18], [51.25, 31.15], [51.5, 31.25], [52.03, 31.03], [52.18, 30.68], [52.53, 30.53], [52.68, 30.18], [53.03, 30.03], [53.18, 29.68], [53.53, 29.53], [53.75, 29.0], [53.65, 28.75], [53.75, 28.5], [53.54, 28.0], [53.75, 27.5], [53.53, 26.97], [53.0, 26.75], [52.47, 26.97], [52.32, 27.32], [52.25, 27.35], [52.0, 27.25], [51.75, 27.35], [51.5, 27.25], [50.97, 27.47], [50.75, 28.0], [50.85, 28.25], 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"description": "The daily evolution of mean t2m.", "value": [11.05773667597174, 9.67080531321335, 11.990448564954193, 17.107699230828757]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.1103806692655667, -0.430448800219267, 3.263984895565727, 16.62236325170636]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.63971288115124, -6.9285371292949005, -4.802290628088469, -3.9208070543220743]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.8212118140220355, -8.222530478916042, -6.051495294095332, -4.260227619301077]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6096653332244233, -2.433101815717036, 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