{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:27.034515", "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": "2012-Sep-27_to_2012-Oct-02_44.0_10.5"}, "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": 2012090000997}, "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": "September 27 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 69730.18700700327}, "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": ["Djibouti", "Eritrea", "Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "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": ["Gulf of Aden", "Red Sea"]}, "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": 10.5}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.75, 13.0], [41.97, 13.53], [42.5, 13.75], [43.03, 13.53], [43.18, 13.18], [43.53, 13.03], [43.75, 12.5], [43.53, 11.97], [43.0, 11.75], [42.47, 11.97], [42.32, 12.32], [41.97, 12.47], [41.75, 13.0]]]]}, "2012-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.75, 13.0], [41.97, 13.53], [42.5, 13.75], [42.75, 13.65], [43.0, 13.75], [43.53, 13.53], [43.75, 13.0], [43.65, 12.75], [43.75, 12.5], [43.65, 12.25], [43.68, 12.18], [44.03, 12.03], [44.18, 11.68], [44.25, 11.65], [44.32, 11.68], [44.47, 12.03], [45.0, 12.25], [45.25, 12.15], [45.5, 12.25], [46.03, 12.03], [46.25, 11.5], [46.15, 11.25], [46.25, 11.0], [46.15, 10.75], [46.25, 10.5], [46.03, 9.97], [45.5, 9.75], [45.25, 9.85], [45.0, 9.75], [44.75, 9.85], [44.5, 9.75], [44.25, 9.85], [44.0, 9.75], [43.75, 9.85], [43.5, 9.75], [43.25, 9.85], [43.0, 9.75], [42.47, 9.97], [42.25, 10.5], [42.35, 10.75], [42.25, 11.0], [42.35, 11.25], [42.25, 11.5], [42.35, 11.75], [42.25, 12.0], [42.35, 12.25], [42.32, 12.32], [41.97, 12.47], [41.75, 13.0]]]]}, "2012-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.75, 13.0], [41.97, 13.53], [42.5, 13.75], [42.75, 13.65], [43.0, 13.75], [43.53, 13.53], [43.75, 13.0], [43.65, 12.75], [43.75, 12.5], [43.65, 12.25], [43.68, 12.18], [44.03, 12.03], [44.18, 11.68], [44.25, 11.65], [44.32, 11.68], [44.47, 12.03], [45.0, 12.25], [45.25, 12.15], [45.5, 12.25], [45.75, 12.15], [46.0, 12.25], [46.53, 12.03], [46.75, 11.5], [46.65, 11.25], [46.75, 11.0], [46.53, 10.47], [46.18, 10.32], [46.03, 9.97], [45.5, 9.75], [45.25, 9.85], [45.0, 9.75], [44.75, 9.85], [44.5, 9.75], [44.25, 9.85], [44.0, 9.75], [43.75, 9.85], [43.5, 9.75], [43.25, 9.85], [43.0, 9.75], [42.47, 9.97], [42.25, 10.5], [42.35, 10.75], [42.25, 11.0], [42.35, 11.25], [42.25, 11.5], [42.35, 11.75], [42.25, 12.0], [42.35, 12.25], [42.32, 12.32], [41.97, 12.47], [41.75, 13.0]]]]}, "2012-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.35, 11.25], [42.25, 11.5], [42.35, 11.75], [42.25, 12.0], [42.35, 12.25], [42.25, 12.5], [42.35, 12.75], [42.25, 13.0], [42.47, 13.53], [43.0, 13.75], [43.53, 13.53], [43.75, 13.0], [43.65, 12.75], [43.75, 12.5], [43.65, 12.25], [43.68, 12.18], [44.03, 12.03], [44.18, 11.68], [44.25, 11.65], [44.32, 11.68], [44.47, 12.03], [45.0, 12.25], [45.25, 12.15], [45.5, 12.25], [45.75, 12.15], [46.0, 12.25], [46.53, 12.03], [46.75, 11.5], [46.65, 11.25], [46.75, 11.0], [46.53, 10.47], [46.18, 10.32], [46.03, 9.97], [45.5, 9.75], [45.25, 9.85], [45.0, 9.75], [44.75, 9.85], [44.68, 9.82], [44.53, 9.47], [44.0, 9.25], [43.47, 9.47], [43.32, 9.82], [43.25, 9.85], [43.0, 9.75], [42.47, 9.97], [42.25, 10.5], [42.35, 10.75], [42.25, 11.0], [42.35, 11.25]]]]}, "2012-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.97, 11.53], [43.5, 11.75], [44.0, 11.54], [44.32, 11.68], [44.47, 12.03], [45.0, 12.25], [45.25, 12.15], [45.5, 12.25], [45.75, 12.15], [46.0, 12.25], [46.53, 12.03], [46.75, 11.5], [46.65, 11.25], [46.75, 11.0], [46.53, 10.47], [46.18, 10.32], [46.03, 9.97], [45.5, 9.75], [45.25, 9.85], [45.0, 9.75], [44.75, 9.85], [44.68, 9.82], [44.53, 9.47], [44.0, 9.25], [43.47, 9.47], [43.32, 9.82], [42.97, 9.97], [42.75, 10.5], [42.85, 10.75], [42.75, 11.0], [42.97, 11.53]]]]}, "2012-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, 11.03], [44.0, 11.25], [44.53, 11.03], [44.75, 10.5], [44.65, 10.25], [44.75, 10.0], [44.53, 9.47], [44.0, 9.25], [43.47, 9.47], [43.25, 10.0], [43.35, 10.25], [43.25, 10.5], [43.47, 11.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8955250139574105}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7291387935157272}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.178467931114938, 28.041394330743174, 28.173380046712452, 27.695255380346566, 27.541331893161214, 25.912784725484983]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.735909789812865, 25.347883154384704, 25.246771024996008, 23.400238127987393, 23.14647314168002, 23.948058203474545]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6104429034642465, -1.8271855367883405, -1.5578239152694457, -1.7191801222400847, -1.8815938822605662, -1.794190674368366]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.895849531675708, -2.399813199000789, -2.130923890268946, -2.83969451139734, -2.8955250139574105, -1.9116861218839745]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6875443256074107, -1.7873422671970218, -1.535706985352788, -1.5982925836384945, -1.8061876222152666, -1.5233762086237137]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7067964611777855, -2.215322391776017, -1.695068051802736, -2.1416724837291428, -2.1195142515590426, -1.6440112070232649]}}