{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:05.431266", "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": "2014-Apr-23_to_2014-Apr-26_22.5_-10.5"}, "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": 2014040000822}, "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": "April 23 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 97654.02589714718}, "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": ["Angola", "Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.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": -10.5}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.25}, "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": {"2014-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.5, -6.75], [23.03, -6.97], [23.25, -7.5], [23.03, -8.03], [22.5, -8.25], [21.97, -8.03], [21.75, -7.5], [21.97, -6.97], [22.5, -6.75]]]]}, "2014-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -8.47], [21.32, -8.32], [21.47, -7.97], [21.82, -7.82], [21.85, -7.75], [21.75, -7.5], [21.97, -6.97], [22.5, -6.75], [23.03, -6.97], [23.18, -7.32], [23.25, -7.35], [23.5, -7.25], [23.75, -7.35], [24.0, -7.25], [24.25, -7.35], [24.5, -7.25], [25.03, -7.47], [25.18, -7.82], [25.25, -7.85], [25.5, -7.75], [26.03, -7.97], [26.25, -8.5], [26.03, -9.03], [25.5, -9.25], [25.25, -9.15], [25.0, -9.25], [24.75, -9.15], [24.5, -9.25], [24.25, -9.15], [24.18, -9.18], [24.15, -9.25], [24.25, -9.5], [24.03, -10.03], [23.68, -10.18], [23.65, -10.25], [23.75, -10.5], [23.65, -10.75], [23.75, -11.0], [23.53, -11.53], [23.0, -11.75], [22.75, -11.65], [22.5, -11.75], [21.97, -11.53], [21.82, -11.18], [21.47, -11.03], [21.25, -10.5], [21.35, -10.25], [21.32, -10.18], [20.97, -10.03], [20.75, -9.5], [20.85, -9.25], [20.75, -9.0], [20.97, -8.47]]]]}, "2014-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -8.47], [21.32, -8.32], [21.47, -7.97], [21.82, -7.82], [21.85, -7.75], [21.75, -7.5], [21.97, -6.97], [22.5, -6.75], [23.03, -6.97], [23.18, -7.32], [23.25, -7.35], [23.5, -7.25], [23.75, -7.35], [24.0, -7.25], [24.25, -7.35], [24.5, -7.25], [25.03, -7.47], [25.18, -7.82], [25.25, -7.85], [25.5, -7.75], [26.03, -7.97], [26.25, -8.5], [26.03, -9.03], [25.5, -9.25], [25.25, -9.15], [25.0, -9.25], [24.75, -9.15], [24.5, -9.25], [24.25, -9.15], [24.18, -9.18], [24.15, -9.25], [24.25, -9.5], [24.03, -10.03], [23.68, -10.18], [23.65, -10.25], [23.75, -10.5], [23.65, -10.75], [23.75, -11.0], [23.53, -11.53], [23.0, -11.75], [22.75, -11.65], [22.5, -11.75], [21.97, -11.53], [21.82, -11.18], [21.47, -11.03], [21.25, -10.5], [21.35, -10.25], [21.32, -10.18], [20.97, -10.03], [20.75, -9.5], [20.85, -9.25], [20.75, -9.0], [20.97, -8.47]]]]}, "2014-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -8.47], [21.32, -8.32], [21.47, -7.97], [21.82, -7.82], [21.97, -7.47], [22.5, -7.25], [22.75, -7.35], [23.0, -7.25], [23.25, -7.35], [23.5, -7.25], [23.75, -7.35], [24.0, -7.25], [24.25, -7.35], [24.5, -7.25], [25.03, -7.47], [25.18, -7.82], [25.25, -7.85], [25.5, -7.75], [26.03, -7.97], [26.25, -8.5], [26.03, -9.03], [25.5, -9.25], [25.25, -9.15], [25.0, -9.25], [24.75, -9.15], [24.5, -9.25], [24.25, -9.15], [24.18, -9.18], [24.15, -9.25], [24.25, -9.5], [24.03, -10.03], [23.68, -10.18], [23.65, -10.25], [23.75, -10.5], [23.65, -10.75], [23.75, -11.0], [23.53, -11.53], [23.0, -11.75], [22.75, -11.65], [22.5, -11.75], [21.97, -11.53], [21.82, -11.18], [21.47, -11.03], [21.25, -10.5], [21.35, -10.25], [21.32, -10.18], [20.97, -10.03], [20.75, -9.5], [20.85, -9.25], [20.75, -9.0], [20.97, -8.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.37858761927896}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6072792470785107}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.51609163674169, 21.493572064875707, 21.313433270497512, 21.984541657803675]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.51609163674169, 21.000575865274243, 20.273699605041656, 21.01918204463874]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2066028943908123, -1.6914712958374967, -1.9011991470252312, -1.2298951823722233]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2066028943908123, -2.116299023060151, -2.37858761927896, -1.8524016825602985]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3142006817114078, -2.167341433623715, -2.472833350177103, -1.5474355709918086]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3142006817114078, -2.671539754787926, -3.3046128916438633, -2.2459484828725316]}}