{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:21.318295", "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": "2011-May-01_to_2011-May-03_37.0_16.0"}, "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": 2011050000125}, "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": "May 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2011"}, "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": 68195.2499388866}, "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": ["Eritrea", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 16.0}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, 15.97], [32.25, 16.5], [32.47, 17.03], [33.0, 17.25], [33.25, 17.15], [33.5, 17.25], [33.75, 17.15], [33.82, 17.18], [33.97, 17.53], [34.32, 17.68], [34.47, 18.03], [35.0, 18.25], [35.53, 18.03], [35.68, 17.68], [36.03, 17.53], [36.18, 17.18], [36.25, 17.15], [36.5, 17.25], [36.75, 17.15], [36.82, 17.18], [36.97, 17.53], [37.5, 17.75], [38.03, 17.53], [38.25, 17.0], [38.15, 16.75], [38.25, 16.5], [38.15, 16.25], [38.25, 16.0], [38.03, 15.47], [37.5, 15.25], [37.25, 15.35], [37.0, 15.25], [36.75, 15.35], [36.68, 15.32], [36.53, 14.97], [36.0, 14.75], [35.75, 14.85], [35.5, 14.75], [34.97, 14.97], [34.75, 15.5], [34.85, 15.75], [34.82, 15.82], [34.75, 15.85], [34.68, 15.82], [34.53, 15.47], [34.0, 15.25], [33.47, 15.47], [33.32, 15.82], [33.25, 15.85], [33.0, 15.75], [32.47, 15.97]]]]}, "2011-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, 15.97], [32.25, 16.5], [32.47, 17.03], [33.0, 17.25], [33.25, 17.15], [33.5, 17.25], [33.75, 17.15], [33.82, 17.18], [33.97, 17.53], [34.32, 17.68], [34.47, 18.03], [35.0, 18.25], [35.53, 18.03], [35.68, 17.68], [36.03, 17.53], [36.18, 17.18], [36.25, 17.15], [36.5, 17.25], [36.75, 17.15], [36.82, 17.18], [36.97, 17.53], [37.5, 17.75], [38.03, 17.53], [38.25, 17.0], [38.15, 16.75], [38.25, 16.5], [38.15, 16.25], [38.25, 16.0], [38.03, 15.47], [37.5, 15.25], [37.25, 15.35], [37.0, 15.25], [36.75, 15.35], [36.68, 15.32], [36.53, 14.97], [36.0, 14.75], [35.75, 14.85], [35.5, 14.75], [34.97, 14.97], [34.75, 15.5], [34.85, 15.75], [34.82, 15.82], [34.75, 15.85], [34.68, 15.82], [34.53, 15.47], [34.0, 15.25], [33.47, 15.47], [33.32, 15.82], [33.25, 15.85], [33.0, 15.75], [32.47, 15.97]]]]}, "2011-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.47, 15.97], [32.25, 16.5], [32.47, 17.03], [33.0, 17.25], [33.25, 17.15], [33.5, 17.25], [33.75, 17.15], [33.82, 17.18], [33.97, 17.53], [34.32, 17.68], [34.47, 18.03], [35.0, 18.25], [35.53, 18.03], [35.68, 17.68], [36.03, 17.53], [36.18, 17.18], [36.25, 17.15], [36.5, 17.25], [36.75, 17.15], [36.82, 17.18], [36.97, 17.53], [37.5, 17.75], [38.03, 17.53], [38.25, 17.0], [38.15, 16.75], [38.25, 16.5], [38.15, 16.25], [38.25, 16.0], [38.03, 15.47], [37.5, 15.25], [37.25, 15.35], [37.0, 15.25], [36.75, 15.35], [36.68, 15.32], [36.53, 14.97], [36.0, 14.75], [35.75, 14.85], [35.5, 14.75], [34.97, 14.97], [34.75, 15.5], [34.85, 15.75], [34.82, 15.82], [34.75, 15.85], [34.68, 15.82], [34.53, 15.47], [34.0, 15.25], [33.47, 15.47], [33.32, 15.82], [33.25, 15.85], [33.0, 15.75], [32.47, 15.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6857413538449464}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0068738309747407}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.456853998867587, 30.615762431775295, 30.955196995985943]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.003232997884822, 28.15549010014655, 29.01645819160518]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0714240652962097, -3.0868448668407864, -2.862352560787226]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6857413538449464, -3.3551680671749295, -3.2119013075894713]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7765634481062393, -1.847298061743798, -1.6988788556076357]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1088053965323574, -2.196903737411425, -1.9897534155054053]}}