{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:37.897027", "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-Oct-05_to_2013-Oct-11_42.0_10.0"}, "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": 2013100000280}, "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": "October 05 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 11 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 79280.30539929372}, "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": ["Ethiopia", "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": []}, "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": 10.0}, "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": 42.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 43.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.5, 10.25], [43.03, 10.03], [43.25, 9.5], [43.03, 8.97], [42.5, 8.75], [41.97, 8.97], [41.75, 9.5], [41.97, 10.03], [42.5, 10.25]]]]}, "2013-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 7.97], [40.25, 8.5], [40.47, 9.03], [41.0, 9.25], [41.53, 9.03], [41.75, 8.5], [41.53, 7.97], [41.0, 7.75], [40.47, 7.97]]], [[[39.25, 10.0], [39.47, 10.53], [40.0, 10.75], [40.25, 10.65], [40.32, 10.68], [40.47, 11.03], [41.0, 11.25], [41.53, 11.03], [41.68, 10.68], [41.75, 10.65], [42.0, 10.75], [42.53, 10.53], [42.68, 10.18], [43.03, 10.03], [43.25, 9.5], [43.03, 8.97], [42.5, 8.75], [41.97, 8.97], [41.82, 9.32], [41.75, 9.35], [41.5, 9.25], [41.0, 9.46], [40.5, 9.25], [40.25, 9.35], [40.0, 9.25], [39.47, 9.47], [39.25, 10.0]]]]}, "2013-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 9.47], [39.25, 10.0], [39.47, 10.53], [40.0, 10.75], [40.25, 10.65], [40.32, 10.68], [40.35, 10.75], [40.25, 11.0], [40.47, 11.53], [41.0, 11.75], [41.53, 11.53], [41.68, 11.18], [42.03, 11.03], [42.18, 10.68], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [43.0, 10.75], [43.53, 10.53], [43.68, 10.18], [44.03, 10.03], [44.25, 9.5], [44.03, 8.97], [43.68, 8.82], [43.53, 8.47], [43.0, 8.25], [42.75, 8.35], [42.5, 8.25], [42.25, 8.35], [42.18, 8.32], [42.03, 7.97], [41.68, 7.82], [41.53, 7.47], [41.0, 7.25], [40.47, 7.47], [40.25, 8.0], [40.35, 8.25], [40.25, 8.5], [40.35, 8.75], [40.25, 9.0], [40.38, 9.3], [40.25, 9.35], [40.0, 9.25], [39.47, 9.47]]]]}, "2013-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 10.0], [39.47, 10.53], [40.0, 10.75], [40.25, 10.65], [40.32, 10.68], [40.35, 10.75], [40.25, 11.0], [40.47, 11.53], [41.0, 11.75], [41.53, 11.53], [41.68, 11.18], [42.03, 11.03], [42.18, 10.68], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [43.0, 10.75], [43.53, 10.53], [43.68, 10.18], [44.03, 10.03], [44.25, 9.5], [44.03, 8.97], [43.68, 8.82], [43.53, 8.47], [43.18, 8.32], [43.03, 7.97], [42.5, 7.75], [42.0, 7.96], [41.68, 7.82], [41.65, 7.75], [41.75, 7.5], [41.53, 6.97], [41.0, 6.75], [40.47, 6.97], [40.25, 7.5], [40.35, 7.75], [40.25, 8.0], [40.35, 8.25], [40.32, 8.32], [39.97, 8.47], [39.75, 9.0], [39.88, 9.3], [39.47, 9.47], [39.25, 10.0]]]]}, "2013-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 10.53], [40.32, 10.68], [40.35, 10.75], [40.25, 11.0], [40.47, 11.53], [41.0, 11.75], [41.53, 11.53], [41.68, 11.18], [42.03, 11.03], [42.18, 10.68], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [43.0, 10.75], [43.53, 10.53], [43.68, 10.18], [44.03, 10.03], [44.25, 9.5], [44.03, 8.97], [43.68, 8.82], [43.53, 8.47], [43.18, 8.32], [43.03, 7.97], [42.5, 7.75], [42.0, 7.96], [41.68, 7.82], [41.65, 7.75], [41.75, 7.5], [41.53, 6.97], [41.0, 6.75], [40.47, 6.97], [40.25, 7.5], [40.35, 7.75], [40.25, 8.0], [40.35, 8.25], [40.32, 8.32], [39.97, 8.47], [39.75, 9.0], [39.96, 9.5], [39.75, 10.0], [39.97, 10.53]]]]}, "2013-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 6.97], [40.25, 7.5], [40.47, 8.03], [41.0, 8.25], [41.53, 8.03], [41.75, 7.5], [41.53, 6.97], [41.0, 6.75], [40.47, 6.97]]], [[[41.5, 10.75], [41.75, 10.65], [42.0, 10.75], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [43.0, 10.75], [43.53, 10.53], [43.75, 10.0], [43.65, 9.75], [43.75, 9.5], [43.53, 8.97], [43.13, 8.8], [43.25, 8.5], [43.03, 7.97], [42.5, 7.75], [41.97, 7.97], [41.75, 8.5], [41.88, 8.8], [41.47, 8.97], [41.32, 9.32], [41.07, 9.43], [41.25, 9.0], [41.03, 8.47], [40.5, 8.25], [39.97, 8.47], [39.75, 9.0], [39.97, 9.53], [40.5, 9.75], [40.93, 9.57], [40.75, 10.0], [40.97, 10.53], [41.5, 10.75]]]]}, "2013-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.97, 9.47], [40.75, 10.0], [40.97, 10.53], [41.5, 10.75], [41.75, 10.65], [42.0, 10.75], [42.25, 10.65], [42.5, 10.75], [42.75, 10.65], [43.0, 10.75], [43.53, 10.53], [43.75, 10.0], [43.53, 9.47], [43.0, 9.25], [42.75, 9.35], [42.5, 9.25], [42.25, 9.35], [42.0, 9.25], [41.75, 9.35], [41.5, 9.25], [40.97, 9.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.624258855583662}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.640497549024937}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.955986147123497, 23.85273574740995, 21.484943936266347, 20.481587360542164, 21.104655541010004, 20.83817334647415, 23.63442014492489]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.955986147123497, 17.932410585464424, 17.129630659603947, 16.61987146082987, 17.43091351706022, 17.678350076588174, 19.54352600760643]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3348192190289296, -2.484753964620755, -2.47026050986694, -3.2020195664315954, -2.465341035423128, -2.235238520570914, -2.6763140473928217]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3348192190289296, -3.254991752034016, -3.774663332259422, -4.624258855583662, -4.028774796039215, -3.3195013466101955, -2.9275605628317862]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.352351262709168, -1.5989199078936143, -1.7661869088483377, -2.2863399619574185, -1.7253469697338537, -1.6189995224532023, -1.7387518980691958]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.352351262709168, -1.7779576550946414, -2.3423369077380487, -2.763947220084038, -2.231841848249992, -2.0976870000503167, -1.9095866110381594]}}