{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:31.388967", "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": "2021-Mar-04_to_2021-Mar-08_31.0_-12.5"}, "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": 2021030000236}, "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": "March 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 2021"}, "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": 66450.11067380264}, "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": ["Zambia"]}, "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": []}, "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": -12.5}, "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": 31.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.0, -11.75], [31.53, -11.97], [31.75, -12.5], [31.53, -13.03], [31.0, -13.25], [30.47, -13.03], [30.25, -12.5], [30.47, -11.97], [31.0, -11.75]]]]}, "2021-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -10.97], [30.5, -10.75], [30.75, -10.85], [31.0, -10.75], [31.53, -10.97], [31.75, -11.5], [31.65, -11.75], [31.75, -12.0], [31.65, -12.25], [31.75, -12.5], [31.53, -13.03], [31.0, -13.25], [30.47, -13.03], [30.32, -12.68], [29.97, -12.53], [29.75, -12.0], [29.85, -11.75], [29.75, -11.5], [29.97, -10.97]]]]}, "2021-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, -10.47], [30.0, -10.25], [30.25, -10.35], [30.5, -10.25], [31.03, -10.47], [31.18, -10.82], [31.53, -10.97], [31.68, -11.32], [31.75, -11.35], [31.82, -11.32], [31.97, -10.97], [32.5, -10.75], [33.03, -10.97], [33.25, -11.5], [33.15, -11.75], [33.18, -11.82], [33.53, -11.97], [33.75, -12.5], [33.65, -12.75], [33.75, -13.0], [33.53, -13.53], [33.0, -13.75], [32.75, -13.65], [32.68, -13.68], [32.53, -14.03], [32.0, -14.25], [31.75, -14.15], [31.5, -14.25], [30.97, -14.03], [30.75, -13.5], [30.85, -13.25], [30.82, -13.18], [30.47, -13.03], [30.32, -12.68], [29.97, -12.53], [29.82, -12.18], [29.47, -12.03], [29.25, -11.5], [29.35, -11.25], [29.25, -11.0], [29.47, -10.47]]]]}, "2021-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, -10.47], [30.0, -10.25], [30.25, -10.35], [30.5, -10.25], [31.03, -10.47], [31.18, -10.82], [31.53, -10.97], [31.68, -11.32], [31.75, -11.35], [31.82, -11.32], [31.97, -10.97], [32.5, -10.75], [33.03, -10.97], [33.25, -11.5], [33.15, -11.75], [33.18, -11.82], [33.53, -11.97], [33.75, -12.5], [33.65, -12.75], [33.75, -13.0], [33.53, -13.53], [33.0, -13.75], [32.75, -13.65], [32.68, -13.68], [32.53, -14.03], [32.0, -14.25], [31.75, -14.15], [31.5, -14.25], [30.97, -14.03], [30.75, -13.5], [30.85, -13.25], [30.82, -13.18], [30.47, -13.03], [30.32, -12.68], [29.97, -12.53], [29.82, -12.18], [29.47, -12.03], [29.25, -11.5], [29.35, -11.25], [29.25, -11.0], [29.47, -10.47]]]]}, "2021-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.47, -10.47], [30.0, -10.25], [30.25, -10.35], [30.5, -10.25], [31.03, -10.47], [31.18, -10.82], [31.53, -10.97], [31.68, -11.32], [31.75, -11.35], [31.82, -11.32], [31.97, -10.97], [32.5, -10.75], [33.03, -10.97], [33.25, -11.5], [33.15, -11.75], [33.18, -11.82], [33.53, -11.97], [33.75, -12.5], [33.65, -12.75], [33.75, -13.0], [33.53, -13.53], [33.0, -13.75], [32.75, -13.65], [32.68, -13.68], [32.53, -14.03], [32.0, -14.25], [31.75, -14.15], [31.5, -14.25], [30.97, -14.03], [30.75, -13.5], [30.85, -13.25], [30.82, -13.18], [30.47, -13.03], [30.32, -12.68], [29.97, -12.53], [29.82, -12.18], [29.47, -12.03], [29.25, -11.5], [29.35, -11.25], [29.25, -11.0], [29.47, -10.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8663989800016907}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8340312874359814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.343957925916925, 19.734103002695633, 21.348738135309475, 21.20900833368404, 20.66094000385789]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.343957925916925, 18.546165522997796, 18.540806664417744, 18.108239599850037, 17.83586668109666]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6217940243688531, -1.5475183809788404, -1.5704437411951424, -1.7200849080126452, -2.28632893107074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6217940243688531, -1.857652596406922, -1.9292308818077686, -2.219018198843287, -2.8663989800016907]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7036164945392527, -1.5992374266915612, -1.5670717643008307, -1.7259009238248433, -2.301307767063984]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7036164945392527, -1.9293632099264038, -2.0421020391616866, -2.108167439988066, -2.986573504260201]}}