{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:25.904743", "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-Sep-27_to_2013-Oct-01_39.5_16.5"}, "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": 2013090001236}, "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 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 53386.67753070494}, "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": ["Arabian-Peninsula", "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": ["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": 16.5}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.75}, "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": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.97, 19.03], [38.5, 19.25], [39.03, 19.03], [39.25, 18.5], 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15.32], [41.65, 15.25], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.5, 14.25], [39.97, 14.47], [39.82, 14.82], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.82, 16.82], [38.47, 16.97], [38.32, 17.32], [37.97, 17.47], [37.75, 18.0], [37.85, 18.25], [37.75, 18.5], [37.97, 19.03]]]]}, "2013-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.97, 19.03], [38.5, 19.25], [39.03, 19.03], [39.25, 18.5], [39.15, 18.25], [39.18, 18.18], [39.53, 18.03], [39.68, 17.68], [39.75, 17.65], [40.0, 17.75], [40.53, 17.53], [40.68, 17.18], [41.03, 17.03], [41.18, 16.68], [41.25, 16.65], [41.5, 16.75], [42.03, 16.53], [42.25, 16.0], [42.03, 15.47], [41.68, 15.32], [41.65, 15.25], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.5, 14.25], [39.97, 14.47], [39.82, 14.82], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75], [38.82, 16.82], [38.47, 16.97], [38.32, 17.32], [37.97, 17.47], [37.75, 18.0], [37.85, 18.25], [37.75, 18.5], [37.97, 19.03]]]]}, "2013-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.85, 16.75], [38.75, 17.0], [38.97, 17.53], [39.5, 17.75], [39.75, 17.65], [40.0, 17.75], [40.53, 17.53], [40.75, 17.0], [40.65, 16.75], [40.68, 16.68], [40.75, 16.65], [41.0, 16.75], [41.53, 16.53], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.65, 15.25], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.5, 14.25], [39.97, 14.47], [39.82, 14.82], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75]]]]}, "2013-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.85, 16.75], [38.75, 17.0], [38.97, 17.53], [39.5, 17.75], [39.75, 17.65], [40.0, 17.75], [40.53, 17.53], [40.75, 17.0], [40.65, 16.75], [40.68, 16.68], [41.03, 16.53], [41.25, 16.0], [41.15, 15.75], [41.18, 15.68], [41.53, 15.53], [41.75, 15.0], [41.53, 14.47], [41.0, 14.25], [40.75, 14.35], [40.5, 14.25], [39.97, 14.47], [39.82, 14.82], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.75, 16.5], [38.85, 16.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.2339629823816836}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9023649152540086}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.438607862986146, 30.33864296025962, 30.314156130136553, 30.410452548208582, 30.446197631172936]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.71438914835386, 29.56351560317779, 29.648391723731777, 30.053971641710234, 30.001816100214285]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.881884158144651, -0.93532899696523, -0.9346820629456261, -0.889880305897328, -0.8359059815784917]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2339629823816836, -1.1793614387287334, -1.1343196242570457, -0.9860484917941221, -0.9096366485669023]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.65922081463724, -1.7669710443165314, -1.733309033122153, -1.6382847730272931, -1.4407618213254987]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.235788093153398, -2.2816795427174386, -1.981638151860066, -1.8862031721564472, -1.581455018375461]}}