{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:11.470070", "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": "2017-Jun-01_to_2017-Jun-03_346.5_20.0"}, "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": 2017060000034}, "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": "June 01 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 03 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 101466.54399601223}, "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": ["Mauritania", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 20.0}, "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": 346.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 344.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 349.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 21.25], [-16.25, 21.5], [-16.03, 22.03], [-15.68, 22.18], [-15.53, 22.53], [-15.0, 22.75], [-14.47, 22.53], [-14.32, 22.18], [-14.25, 22.15], [-14.0, 22.25], [-13.47, 22.03], [-13.32, 21.68], [-13.25, 21.65], [-13.0, 21.75], [-12.47, 21.53], [-12.32, 21.18], [-11.97, 21.03], [-11.82, 20.68], [-11.75, 20.65], [-11.5, 20.75], [-10.97, 20.53], [-10.82, 20.18], [-10.47, 20.03], [-10.25, 19.5], [-10.47, 18.97], [-11.0, 18.75], [-11.25, 18.85], [-11.32, 18.82], [-11.35, 18.75], [-11.25, 18.5], [-11.47, 17.97], [-12.0, 17.75], [-12.53, 17.97], [-12.75, 18.5], [-12.65, 18.75], [-12.7, 18.88], [-12.82, 18.82], [-12.97, 18.47], [-13.5, 18.25], [-13.75, 18.35], [-14.0, 18.25], [-14.53, 18.47], [-14.68, 18.82], [-15.03, 18.97], [-15.18, 19.32], [-15.53, 19.47], [-15.68, 19.82], [-16.03, 19.97], [-16.25, 20.5], [-16.15, 20.75], [-16.25, 21.0], [-16.15, 21.25]]]]}, "2017-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 21.25], [-16.25, 21.5], [-16.03, 22.03], [-15.68, 22.18], [-15.53, 22.53], [-15.0, 22.75], [-14.47, 22.53], [-14.32, 22.18], [-14.25, 22.15], [-14.0, 22.25], [-13.47, 22.03], [-13.32, 21.68], [-13.25, 21.65], [-13.0, 21.75], [-12.47, 21.53], [-12.32, 21.18], [-11.97, 21.03], [-11.82, 20.68], [-11.75, 20.65], [-11.5, 20.75], [-10.97, 20.53], [-10.82, 20.18], [-10.47, 20.03], [-10.25, 19.5], [-10.47, 18.97], [-11.0, 18.75], [-11.25, 18.85], [-11.32, 18.82], [-11.35, 18.75], [-11.25, 18.5], [-11.47, 17.97], [-12.0, 17.75], [-12.53, 17.97], [-12.75, 18.5], [-12.65, 18.75], [-12.7, 18.88], [-12.82, 18.82], [-12.97, 18.47], [-13.5, 18.25], [-13.75, 18.35], [-14.0, 18.25], [-14.53, 18.47], [-14.68, 18.82], [-15.03, 18.97], [-15.18, 19.32], [-15.53, 19.47], [-15.68, 19.82], [-16.03, 19.97], [-16.25, 20.5], [-16.15, 20.75], [-16.25, 21.0], [-16.15, 21.25]]]]}, "2017-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 21.25], [-16.25, 21.5], [-16.03, 22.03], [-15.68, 22.18], [-15.53, 22.53], [-15.0, 22.75], [-14.47, 22.53], [-14.32, 22.18], [-14.25, 22.15], [-14.0, 22.25], [-13.47, 22.03], [-13.32, 21.68], [-13.25, 21.65], [-13.0, 21.75], [-12.47, 21.53], [-12.32, 21.18], [-11.97, 21.03], [-11.82, 20.68], [-11.75, 20.65], [-11.5, 20.75], [-10.97, 20.53], [-10.82, 20.18], [-10.47, 20.03], [-10.25, 19.5], [-10.47, 18.97], [-11.0, 18.75], [-11.25, 18.85], [-11.32, 18.82], [-11.35, 18.75], [-11.25, 18.5], [-11.47, 17.97], [-12.0, 17.75], [-12.53, 17.97], [-12.75, 18.5], [-12.65, 18.75], [-12.7, 18.88], [-12.82, 18.82], [-12.97, 18.47], [-13.5, 18.25], [-13.75, 18.35], [-14.0, 18.25], [-14.53, 18.47], [-14.68, 18.82], [-15.03, 18.97], [-15.18, 19.32], [-15.53, 19.47], [-15.68, 19.82], [-16.03, 19.97], [-16.25, 20.5], [-16.15, 20.75], [-16.25, 21.0], [-16.15, 21.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.030667392940359}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.843200933039084}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.68628521188873, 28.22607661254432, 29.212685452822882]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.543497958796024, 24.0463284384478, 25.362731155246024]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7912817301102515, -4.343634712563765, -3.3946863564432355]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.4379800990353715, -5.030667392940359, -3.9147990105274175]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6800803034387946, -1.9564090178778466, -1.536530834698409]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9754077008202584, -2.283386955657424, -1.8767634190096993]}}