{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:40.141224", "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": "2012-Jun-17_to_2012-Jun-19_357.0_17.5"}, "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": 2012060000830}, "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 17 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2012"}, "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": 53329.67452875481}, "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": ["Mali"]}, "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": 17.5}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.15, 16.75], [-4.25, 17.0], [-4.03, 17.53], [-3.68, 17.68], [-3.53, 18.03], [-3.0, 18.25], [-2.75, 18.15], [-2.5, 18.25], [-2.25, 18.15], [-2.0, 18.25], [-1.47, 18.03], [-1.25, 17.5], [-1.35, 17.25], [-1.32, 17.18], [-0.97, 17.03], [-0.75, 16.5], [-0.97, 15.97], [-1.32, 15.82], [-1.47, 15.47], [-1.82, 15.32], [-1.97, 14.97], [-2.5, 14.75], [-2.75, 14.85], [-3.0, 14.75], [-3.53, 14.97], [-3.68, 15.32], [-4.03, 15.47], [-4.25, 16.0], [-4.15, 16.25], [-4.25, 16.5], [-4.15, 16.75]]]]}, "2012-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.15, 16.75], [-4.25, 17.0], [-4.03, 17.53], [-3.68, 17.68], [-3.53, 18.03], [-3.0, 18.25], [-2.75, 18.15], [-2.5, 18.25], [-2.25, 18.15], [-2.0, 18.25], [-1.47, 18.03], [-1.25, 17.5], [-1.35, 17.25], [-1.32, 17.18], [-0.97, 17.03], [-0.75, 16.5], [-0.97, 15.97], [-1.32, 15.82], [-1.47, 15.47], [-1.82, 15.32], [-1.97, 14.97], [-2.5, 14.75], [-2.75, 14.85], [-3.0, 14.75], [-3.53, 14.97], [-3.68, 15.32], [-4.03, 15.47], [-4.25, 16.0], [-4.15, 16.25], [-4.25, 16.5], [-4.15, 16.75]]]]}, "2012-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.15, 16.75], [-4.25, 17.0], [-4.03, 17.53], [-3.68, 17.68], [-3.53, 18.03], [-3.0, 18.25], [-2.75, 18.15], [-2.5, 18.25], [-2.25, 18.15], [-2.0, 18.25], [-1.47, 18.03], [-1.25, 17.5], [-1.35, 17.25], [-1.32, 17.18], [-0.97, 17.03], [-0.75, 16.5], [-0.97, 15.97], [-1.32, 15.82], [-1.47, 15.47], [-1.82, 15.32], [-1.97, 14.97], [-2.5, 14.75], [-2.75, 14.85], [-3.0, 14.75], [-3.53, 14.97], [-3.68, 15.32], [-4.03, 15.47], [-4.25, 16.0], [-4.15, 16.25], [-4.25, 16.5], [-4.15, 16.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.17226123898638}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6918773683100787}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.482370906417145, 32.22447004924908, 32.33489159330958]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.415872757071554, 31.106718261145488, 31.56007290729275]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6870062180652274, -2.808637442632763, -2.5799884442322454]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.233854966378999, -4.17226123898638, -3.117734470163441]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.101299106836416, -2.1193097496051734, -1.9153307132190855]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.556216001012518, -3.149379975800851, -2.3835081784693166]}}