{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:20.369213", "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": "2010-Dec-20_to_2010-Dec-24_19.0_5.5"}, "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": 2010120000950}, "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 20 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2010"}, "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": 107625.87338765907}, "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": ["Central African Republic"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 5.5}, "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": 19.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 4.97], [18.25, 5.5], [18.47, 6.03], [19.0, 6.25], [19.25, 6.15], [19.5, 6.25], [19.8, 6.13], [19.97, 6.53], [20.5, 6.75], [20.75, 6.65], [21.0, 6.75], [21.53, 6.53], [21.75, 6.0], [21.65, 5.75], [21.68, 5.68], [22.03, 5.53], [22.25, 5.0], [22.03, 4.47], [21.5, 4.25], [21.25, 4.35], [21.0, 4.25], [20.47, 4.47], [20.32, 4.82], [20.0, 4.96], [19.5, 4.75], [19.25, 4.85], [19.0, 4.75], [18.47, 4.97]]]]}, "2010-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 6.03], [17.5, 6.25], [17.75, 6.15], [17.82, 6.18], [17.97, 6.53], [18.32, 6.68], [18.47, 7.03], [19.0, 7.25], [19.25, 7.15], [19.5, 7.25], [19.75, 7.15], [19.82, 7.18], [19.97, 7.53], [20.5, 7.75], [21.0, 7.54], [21.5, 7.75], [21.75, 7.65], [22.0, 7.75], [22.25, 7.65], [22.5, 7.75], [23.03, 7.53], [23.25, 7.0], [23.03, 6.47], [22.5, 6.25], [22.25, 6.35], [22.0, 6.25], [22.53, 6.03], [22.75, 5.5], [22.65, 5.25], [22.75, 5.0], [22.53, 4.47], [22.0, 4.25], [21.75, 4.35], [21.5, 4.25], [21.25, 4.35], [21.0, 4.25], [20.47, 4.47], [20.32, 4.82], [20.0, 4.96], [19.5, 4.75], [19.25, 4.85], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.0, 4.25], [17.75, 4.35], [17.5, 4.25], [16.97, 4.47], [16.75, 5.0], [16.85, 5.25], [16.75, 5.5], [16.97, 6.03]], [[21.75, 6.35], [21.63, 6.3], [21.68, 6.18], [21.75, 6.15], [22.0, 6.25], [21.75, 6.35]]]]}, "2010-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 6.03], [17.5, 6.25], [17.75, 6.15], [17.82, 6.18], [17.97, 6.53], [18.32, 6.68], [18.47, 7.03], [19.0, 7.25], [19.25, 7.15], [19.5, 7.25], [19.75, 7.15], [19.82, 7.18], [19.97, 7.53], [20.5, 7.75], [21.0, 7.54], [21.5, 7.75], [21.75, 7.65], [22.0, 7.75], [22.25, 7.65], [22.5, 7.75], [23.03, 7.53], [23.25, 7.0], [23.13, 6.7], [23.53, 6.53], [23.75, 6.0], [23.53, 5.47], [23.18, 5.32], [23.04, 5.0], [23.25, 4.5], [23.03, 3.97], [22.5, 3.75], [22.25, 3.85], [22.0, 3.75], [21.47, 3.97], [21.32, 4.32], [21.25, 4.35], [21.0, 4.25], [20.47, 4.47], [20.32, 4.82], [20.0, 4.96], [19.5, 4.75], [19.25, 4.85], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.0, 4.25], [17.75, 4.35], [17.5, 4.25], [16.97, 4.47], [16.75, 5.0], [16.85, 5.25], [16.75, 5.5], [16.97, 6.03]], [[22.25, 6.35], [22.18, 6.32], [22.13, 6.2], [22.25, 6.15], [22.32, 6.18], [22.38, 6.3], [22.25, 6.35]]]]}, "2010-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 6.03], [17.5, 6.25], [17.75, 6.15], [17.82, 6.18], [17.97, 6.53], [18.32, 6.68], [18.47, 7.03], [19.0, 7.25], [19.25, 7.15], [19.5, 7.25], [19.75, 7.15], [19.82, 7.18], [19.97, 7.53], [20.5, 7.75], [21.0, 7.54], [21.5, 7.75], [21.75, 7.65], [22.0, 7.75], [22.25, 7.65], [22.5, 7.75], [23.03, 7.53], [23.25, 7.0], [23.13, 6.7], [23.53, 6.53], [23.75, 6.0], [23.53, 5.47], [23.18, 5.32], [23.04, 5.0], [23.25, 4.5], [23.03, 3.97], [22.5, 3.75], [22.25, 3.85], [22.0, 3.75], [21.47, 3.97], [21.32, 4.32], [21.25, 4.35], [21.0, 4.25], [20.47, 4.47], [20.32, 4.82], [20.0, 4.96], [19.5, 4.75], [19.25, 4.85], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [18.25, 4.35], [18.0, 4.25], [17.75, 4.35], [17.5, 4.25], [16.97, 4.47], [16.75, 5.0], [16.85, 5.25], [16.75, 5.5], [16.97, 6.03]], [[22.25, 6.35], [22.18, 6.32], [22.13, 6.2], [22.25, 6.15], [22.32, 6.18], [22.38, 6.3], [22.25, 6.35]]]]}, "2010-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.97, 6.03], [18.32, 6.18], [18.47, 6.53], [19.0, 6.75], [19.25, 6.65], [19.5, 6.75], [19.75, 6.65], [19.82, 6.68], [19.97, 7.03], [20.5, 7.25], [20.75, 7.15], [21.0, 7.25], [21.25, 7.15], [21.5, 7.25], [22.03, 7.03], [22.25, 6.5], [22.13, 6.2], [22.25, 6.15], [22.32, 6.18], [22.47, 6.53], [23.0, 6.75], [23.53, 6.53], [23.75, 6.0], [23.53, 5.47], [23.18, 5.32], [23.04, 5.0], [23.25, 4.5], [23.03, 3.97], [22.5, 3.75], [22.25, 3.85], [22.0, 3.75], [21.47, 3.97], [21.32, 4.32], [21.25, 4.35], [21.0, 4.25], [20.47, 4.47], [20.32, 4.82], [20.0, 4.96], [19.5, 4.75], [19.25, 4.85], [19.18, 4.82], [19.03, 4.47], [18.5, 4.25], [17.97, 4.47], [17.75, 5.0], [17.85, 5.25], [17.75, 5.5], [17.97, 6.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.700134238216151}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9336259010541814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.29832971694765, 24.012156504755183, 23.977773439327507, 23.840152817939043, 24.35074255577996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.00993692659057, 23.17137309737086, 23.169223105981075, 23.133210750203432, 23.739038011486457]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.942298694734113, -1.923754202853441, -1.9386868649931281, -2.0820466309587324, -1.6947490746524392]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.205424328352308, -2.381651832187515, -2.4717356679490194, -2.700134238216151, -2.1242262887377024]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6565870092650001, -1.5854247466615308, -1.6012208577257507, -1.742435955047062, -1.425603897114953]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.976977126521049, -2.085996859505391, -2.086069625744712, -2.1855031492662955, -1.9654003308501926]}}