{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:07.509953", "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": "2022-Nov-28_to_2022-Dec-02_32.0_-18.5"}, "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": 2022110001084}, "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": "November 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 2022"}, "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": 331672.9826684196}, "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": ["Malawi", "Mozambique", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-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": ["Mozambique Channel"]}, "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": -18.5}, "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": 32.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.25}, "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": {"2022-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -15.97], [29.0, -15.75], [29.25, -15.85], [29.5, -15.75], [29.75, -15.85], [30.0, -15.75], [30.25, -15.85], [30.5, -15.75], [30.75, -15.85], [31.0, -15.75], [31.25, -15.85], [31.5, -15.75], [31.75, -15.85], [32.0, -15.75], [32.25, -15.85], [32.5, -15.75], [33.03, -15.97], [33.18, -16.32], [33.25, -16.35], [33.5, -16.25], [34.03, -16.47], [34.25, -17.0], [34.15, -17.25], [34.18, -17.32], [34.25, -17.35], [34.5, -17.25], [35.03, -17.47], [35.18, -17.82], [35.53, -17.97], [35.75, -18.5], [35.65, -18.75], [35.75, -19.0], [35.53, -19.53], [35.18, -19.68], [35.03, -20.03], [34.5, -20.25], [33.97, -20.03], [33.75, -19.5], [33.85, -19.25], [33.75, -19.0], [33.85, -18.75], [33.82, -18.68], [33.75, -18.65], [33.5, -18.75], [33.25, -18.65], [33.18, -18.68], [33.15, -18.75], [33.25, -19.0], [33.15, -19.25], [33.25, -19.5], [33.15, -19.75], [33.25, -20.0], [33.03, -20.53], [32.5, -20.75], [31.97, -20.53], [31.82, -20.18], [31.75, -20.15], [31.5, -20.25], [31.25, -20.15], [31.0, -20.25], [30.47, -20.03], [30.25, -19.5], [30.35, -19.25], [30.32, -19.18], [29.97, -19.03], [29.75, -18.5], [29.85, -18.25], [29.82, -18.18], [29.47, -18.03], [29.32, -17.68], [28.97, -17.53], [28.82, -17.18], [28.47, -17.03], [28.25, -16.5], [28.47, -15.97]]], [[[33.5, -13.75], [34.03, -13.97], [34.18, -14.32], [34.53, -14.47], [34.75, -15.0], [34.53, -15.53], [34.0, -15.75], [33.75, -15.65], [33.5, -15.75], [32.97, -15.53], [32.75, -15.0], [32.85, -14.75], [32.75, -14.5], [32.97, -13.97], [33.5, -13.75]]]]}, "2022-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, -16.5], [28.47, -15.97], [29.0, -15.75], [29.25, -15.85], [29.5, -15.75], [29.75, -15.85], [30.0, -15.75], [30.25, -15.85], [30.5, -15.75], [30.75, -15.85], [31.0, -15.75], [31.25, -15.85], [31.5, -15.75], [31.75, -15.85], [32.0, -15.75], [32.25, -15.85], [32.5, -15.75], [33.03, -15.97], [33.18, -16.32], [33.25, -16.35], [33.32, -16.32], [33.47, -15.97], [33.88, -15.8], [33.82, -15.68], [33.75, -15.65], [33.5, -15.75], [32.97, -15.53], [32.82, -15.18], [32.47, -15.03], [32.25, -14.5], [32.35, -14.25], [32.25, -14.0], [32.47, -13.47], [33.0, -13.25], [33.53, -13.47], [33.68, -13.82], [33.75, -13.85], [34.0, -13.75], [34.53, -13.97], [34.68, -14.32], [35.03, -14.47], [35.18, -14.82], [35.53, -14.97], [35.68, -15.32], [36.03, -15.47], [36.18, -15.82], [36.53, -15.97], [36.75, -16.5], [36.53, -17.03], [36.18, -17.18], [36.03, -17.53], [35.5, -17.75], [35.07, -17.57], [35.18, -17.82], [35.53, -17.97], [35.68, -18.32], [36.03, -18.47], [36.25, -19.0], [36.03, -19.53], [35.68, -19.68], [35.53, -20.03], [35.0, -20.25], [34.75, -20.15], [34.5, -20.25], [33.97, -20.03], [33.75, -19.5], [33.85, -19.25], [33.75, -19.0], [33.85, -18.75], [33.82, -18.68], [33.75, -18.65], [33.5, -18.75], [33.25, -18.65], [33.18, -18.68], [33.15, -18.75], [33.25, -19.0], [33.15, -19.25], [33.25, -19.5], [33.15, -19.75], [33.25, -20.0], [33.03, -20.53], [32.5, -20.75], [31.97, -20.53], [31.82, -20.18], [31.75, -20.15], [31.5, -20.25], [31.25, -20.15], [31.0, -20.25], [30.47, -20.03], [30.25, -19.5], [30.35, -19.25], [30.32, -19.18], [29.97, -19.03], [29.75, -18.5], [29.85, -18.25], [29.82, -18.18], [29.47, -18.03], [29.32, -17.68], [28.97, -17.53], [28.82, -17.18], [28.47, -17.03], [28.25, -16.5]]]]}, "2022-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, -16.5], [28.47, -15.97], [29.0, -15.75], [29.25, -15.85], [29.5, -15.75], [29.75, -15.85], [30.0, -15.75], [30.25, -15.85], [30.5, -15.75], [30.75, -15.85], [31.0, -15.75], [31.25, -15.85], [31.5, -15.75], [31.75, -15.85], [32.0, -15.75], [32.25, -15.85], [32.5, -15.75], [33.03, -15.97], [33.18, -16.32], [33.25, -16.35], [33.32, -16.32], [33.47, -15.97], [33.88, -15.8], [33.82, -15.68], [33.75, -15.65], [33.5, -15.75], [32.97, -15.53], [32.82, -15.18], [32.47, -15.03], [32.25, -14.5], [32.35, -14.25], [32.25, -14.0], [32.35, -13.75], [32.25, -13.5], [32.47, -12.97], [33.0, -12.75], [33.25, -12.85], [33.5, -12.75], [33.75, -12.85], [34.0, -12.75], [34.5, -12.96], [35.0, -12.75], [35.53, -12.97], [35.68, -13.32], [36.03, -13.47], [36.18, -13.82], [36.25, -13.85], [36.5, -13.75], [36.75, -13.85], [37.0, -13.75], [37.25, -13.85], [37.5, -13.75], [38.03, -13.97], [38.18, -14.32], [38.25, -14.35], [38.5, -14.25], [39.03, -14.47], [39.18, -14.82], [39.53, -14.97], [39.68, -15.32], [39.75, -15.35], [40.0, -15.25], [40.25, -15.35], [40.5, -15.25], [41.03, -15.47], [41.25, -16.0], [41.03, -16.53], [40.68, -16.68], [40.53, -17.03], [40.18, -17.18], [40.03, -17.53], [39.5, -17.75], [39.25, -17.65], [39.0, -17.75], [38.47, -17.53], [38.32, -17.18], [37.97, -17.03], [37.75, -16.5], [37.85, -16.25], [37.82, -16.18], [37.75, -16.15], [37.5, -16.25], [37.25, -16.15], [37.0, -16.25], [36.75, -16.15], [36.63, -16.2], [36.75, -16.5], [36.53, -17.03], [36.18, -17.18], [36.03, -17.53], [35.5, -17.75], [35.07, -17.57], [35.18, -17.82], [35.53, -17.97], [35.68, -18.32], [36.03, -18.47], [36.25, -19.0], [36.03, -19.53], [35.68, -19.68], [35.53, -20.03], [35.0, -20.25], [34.75, -20.15], [34.5, -20.25], [33.97, -20.03], [33.75, -19.5], [33.85, -19.25], [33.75, -19.0], [33.85, -18.75], [33.82, -18.68], [33.75, -18.65], [33.5, -18.75], [33.25, -18.65], [33.18, -18.68], [33.15, -18.75], [33.25, -19.0], [33.15, -19.25], [33.25, -19.5], [33.15, -19.75], [33.25, -20.0], [33.03, -20.53], [32.5, -20.75], [31.97, -20.53], [31.82, -20.18], [31.75, -20.15], [31.5, -20.25], [31.25, -20.15], [31.0, -20.25], [30.47, -20.03], [30.25, -19.5], [30.35, -19.25], [30.32, -19.18], [29.97, -19.03], [29.75, -18.5], [29.85, -18.25], [29.82, -18.18], [29.47, -18.03], [29.32, -17.68], [28.97, -17.53], [28.82, -17.18], [28.47, -17.03], [28.25, -16.5]]]]}, "2022-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.5, -17.25], [30.75, -17.35], [31.0, -17.25], [31.25, -17.35], [31.5, -17.25], [31.75, -17.35], [32.0, -17.25], [32.53, -17.47], [32.68, -17.82], [33.03, -17.97], [33.25, -18.5], [33.15, -18.75], [33.25, -19.0], [33.15, -19.25], [33.25, -19.5], [33.15, -19.75], [33.25, -20.0], [33.03, -20.53], [32.5, -20.75], [31.97, -20.53], [31.82, -20.18], [31.75, -20.15], [31.5, -20.25], [31.25, -20.15], [31.0, -20.25], [30.47, -20.03], [30.25, -19.5], [30.35, -19.25], [30.32, -19.18], [29.97, -19.03], [29.75, -18.5], [29.85, -18.25], [29.75, -18.0], [29.97, -17.47], [30.5, -17.25]]], [[[35.68, -18.32], [36.03, -18.47], [36.25, -19.0], [36.03, -19.53], [35.68, -19.68], [35.53, -20.03], [35.0, -20.25], [34.75, -20.15], [34.5, -20.25], [33.97, -20.03], [33.75, -19.5], [33.85, -19.25], [33.75, -19.0], [33.85, -18.75], [33.75, -18.5], [33.97, -17.97], [34.5, -17.75], [34.75, -17.85], [35.0, -17.75], [35.53, -17.97], [35.68, -18.32]]], [[[32.47, -12.97], [33.0, -12.75], [33.25, -12.85], [33.5, -12.75], [33.75, -12.85], [34.0, -12.75], [34.5, -12.96], [35.0, -12.75], [35.53, -12.97], [35.68, -13.32], [36.03, -13.47], [36.18, -13.82], [36.25, -13.85], [36.5, -13.75], [36.75, -13.85], [37.0, -13.75], [37.25, -13.85], [37.5, -13.75], [38.03, -13.97], [38.18, -14.32], [38.25, -14.35], [38.5, -14.25], [39.03, -14.47], [39.18, -14.82], [39.53, -14.97], [39.68, -15.32], [39.75, -15.35], [40.0, -15.25], [40.25, -15.35], [40.5, -15.25], [41.03, -15.47], [41.25, -16.0], [41.03, -16.53], [40.68, -16.68], [40.53, -17.03], [40.18, -17.18], [40.03, -17.53], [39.5, -17.75], [39.25, -17.65], [39.0, -17.75], [38.47, -17.53], [38.32, -17.18], [37.97, -17.03], [37.75, -16.5], [37.85, -16.25], [37.82, -16.18], [37.75, -16.15], [37.5, -16.25], [37.25, -16.15], [37.0, -16.25], [36.75, -16.15], [36.63, -16.2], [36.75, -16.5], [36.53, -17.03], [36.18, -17.18], [36.03, -17.53], [35.5, -17.75], [35.0, -17.54], [34.5, -17.75], [33.97, -17.53], [33.82, -17.18], [33.47, -17.03], [33.25, -16.5], [33.47, -15.97], [33.88, -15.8], [33.82, -15.68], [33.47, -15.53], [33.32, -15.18], [33.25, -15.15], [33.0, -15.25], [32.47, -15.03], [32.25, -14.5], [32.35, -14.25], [32.25, -14.0], [32.35, -13.75], [32.25, -13.5], [32.47, -12.97]]]]}, "2022-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.25, -13.5], [32.47, -12.97], [33.0, -12.75], [33.25, -12.85], [33.5, -12.75], [33.75, -12.85], [34.0, -12.75], [34.5, -12.96], [35.0, -12.75], [35.53, -12.97], [35.68, -13.32], [36.03, -13.47], [36.18, -13.82], [36.25, -13.85], [36.5, -13.75], [36.75, -13.85], [37.0, -13.75], [37.25, -13.85], [37.5, -13.75], [38.03, -13.97], [38.18, -14.32], [38.25, -14.35], [38.5, -14.25], [39.03, -14.47], [39.18, -14.82], [39.53, -14.97], [39.68, -15.32], [39.75, -15.35], [40.0, -15.25], [40.25, -15.35], [40.5, -15.25], [41.03, -15.47], [41.25, -16.0], [41.03, -16.53], [40.68, -16.68], [40.53, -17.03], [40.18, -17.18], [40.03, -17.53], [39.5, -17.75], [39.25, -17.65], [39.0, -17.75], [38.47, -17.53], [38.32, -17.18], [37.97, -17.03], [37.75, -16.5], [37.85, -16.25], [37.82, -16.18], [37.75, -16.15], [37.5, -16.25], [37.25, -16.15], [37.0, -16.25], [36.75, -16.15], [36.5, -16.25], [36.0, -16.04], [35.5, -16.25], [34.97, -16.03], [34.75, -15.5], [34.85, -15.25], [34.8, -15.12], [34.5, -15.25], [33.97, -15.03], [33.82, -14.68], [33.75, -14.65], [33.5, -14.75], [32.97, -14.53], [32.82, -14.18], [32.47, -14.03], [32.25, -13.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.790738041346344}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5137559843043755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.38402116901011, 20.62011981010926, 21.25515073060535, 21.296459823596933, 23.137499600017463]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.5362754395872, 16.455501656859838, 16.03243452300353, 16.409168829442592, 20.64082001168464]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6268922990263315, -3.7592313486913107, -3.587232971797678, -3.5709591314870583, -2.5919375497709893]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.532925557523811, -5.318204065890029, -5.790738041346344, -5.417043865393509, -3.4074970083624407]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6253412029267376, -1.6993599940568154, -1.8002687637940475, -1.9435509801448543, -1.6244361920465606]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9732514222148554, -2.173593241360685, -2.393567070735617, -2.84464639415263, -2.500231245613]}}