{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:45.168443", "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": "2016-Dec-04_to_2016-Dec-08_39.0_7.0"}, "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": 2016120000165}, "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": "December 04 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 08 2016"}, "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": 76569.65974441984}, "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"]}, "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": 7.0}, "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": 39.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.25, 8.0], [36.47, 8.53], [36.82, 8.68], [36.85, 8.75], [36.75, 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[40.15, 7.75], [40.25, 7.5], [40.15, 7.25], [40.25, 7.0], [40.03, 6.47], [39.63, 6.3], [39.75, 6.0], [39.53, 5.47], [39.0, 5.25], [38.75, 5.35], [38.5, 5.25], [37.97, 5.47], [37.75, 6.0], [37.85, 6.25], [37.82, 6.32], [37.75, 6.35], [37.5, 6.25], [36.97, 6.47], [36.75, 7.0], [36.85, 7.25], [36.82, 7.32], [36.47, 7.47], [36.25, 8.0], [36.35, 8.25], [36.25, 8.5], [36.47, 9.03]]]]}, "2016-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 9.03], [36.82, 9.18], [36.97, 9.53], [37.5, 9.75], [37.75, 9.65], [37.82, 9.68], [37.97, 10.03], [38.5, 10.25], [39.03, 10.03], [39.25, 9.5], [39.15, 9.25], [39.25, 9.0], [39.15, 8.75], [39.2, 8.63], [39.5, 8.75], [40.03, 8.53], [40.25, 8.0], [40.15, 7.75], [40.25, 7.5], [40.15, 7.25], [40.18, 7.18], [40.53, 7.03], [40.75, 6.5], [40.53, 5.97], [40.0, 5.75], [39.7, 5.88], [39.53, 5.47], [39.0, 5.25], [38.75, 5.35], [38.5, 5.25], [37.97, 5.47], [37.75, 6.0], [37.85, 6.25], [37.82, 6.32], [37.75, 6.35], [37.5, 6.25], [36.97, 6.47], [36.75, 7.0], [36.85, 7.25], [36.82, 7.32], [36.47, 7.47], [36.25, 8.0], [36.35, 8.25], [36.25, 8.5], [36.47, 9.03]]]]}, "2016-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 9.03], [37.0, 9.25], [37.25, 9.15], [37.32, 9.18], [37.47, 9.53], [38.0, 9.75], [38.53, 9.53], [38.75, 9.0], [38.65, 8.75], [38.75, 8.5], [38.65, 8.25], [38.7, 8.13], [39.0, 8.25], [39.53, 8.03], [39.75, 7.5], [39.65, 7.25], [39.7, 7.12], [40.0, 7.25], [40.53, 7.03], [40.75, 6.5], [40.53, 5.97], [40.0, 5.75], [39.7, 5.88], [39.53, 5.47], [39.0, 5.25], [38.47, 5.47], [38.32, 5.82], [37.97, 5.97], [37.82, 6.32], [37.75, 6.35], [37.5, 6.25], [36.97, 6.47], [36.75, 7.0], [36.85, 7.25], [36.82, 7.32], [36.47, 7.47], [36.25, 8.0], [36.35, 8.25], [36.25, 8.5], [36.47, 9.03]]]]}, "2016-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.47, 6.97], [37.25, 7.5], [37.47, 8.03], [38.0, 8.25], [38.5, 8.04], [39.0, 8.25], [39.53, 8.03], [39.75, 7.5], [39.65, 7.25], [39.7, 7.12], [40.0, 7.25], [40.53, 7.03], [40.75, 6.5], [40.53, 5.97], [40.0, 5.75], [39.47, 5.97], [39.3, 6.38], [39.0, 6.25], [38.47, 6.47], [38.3, 6.88], [38.0, 6.75], [37.47, 6.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0846378058253663}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8810322265545698}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.38180683471603, 14.40332125440807, 15.069432500527569, 16.149266233802678, 14.753578252464877]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.786773969153046, 10.039234195150641, 10.7968112248372, 11.519493634091816, 11.814144347932256]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.687089386960518, -2.299601301932507, -1.81588811561257, -1.6558931692409082, -1.550067475102324]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.487639140731062, -3.0846378058253663, -2.520509165977444, -2.1922371395194773, -1.80419950891104]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7405662578235328, -2.3166778386215428, -1.782597450445794, -1.624590006870731, -1.4969416614019777]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5613580970999816, -3.1674589104952084, -2.404439664564829, -2.14534547237824, -1.8162977070213049]}}