{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:53.633003", "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": "2018-Jun-05_to_2018-Jun-07_43.0_-21.0"}, "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": 2018060000225}, "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 05 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 07 2018"}, "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": 179631.24608738098}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "Madagascar"]}, "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": -21.0}, "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": 43.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "43.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.75}, "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": {"2018-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -20.0], [39.97, -19.47], [40.32, -19.32], [40.35, -19.25], [40.25, -19.0], [40.35, -18.75], [40.25, -18.5], [40.35, -18.25], [40.25, -18.0], [40.47, -17.47], [41.0, -17.25], [41.53, -17.47], [41.68, -17.82], [41.75, -17.85], [42.0, -17.75], [42.25, -17.85], [42.5, -17.75], [43.0, -17.96], [43.5, -17.75], [44.03, -17.97], [44.18, -18.32], [44.53, -18.47], [44.68, -18.82], [45.03, -18.97], [45.25, -19.5], [45.15, -19.75], [45.25, -20.0], [45.15, -20.25], [45.18, -20.32], [45.53, -20.47], [45.75, -21.0], [45.53, -21.53], [45.18, -21.68], [45.15, -21.75], [45.25, -22.0], [45.03, -22.53], [44.5, -22.75], [44.25, -22.65], [44.18, -22.68], [44.03, -23.03], [43.5, -23.25], [43.25, -23.15], [43.0, -23.25], [42.75, -23.15], [42.5, -23.25], [42.25, -23.15], [42.0, -23.25], [41.47, -23.03], [41.25, -22.5], [41.35, -22.25], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.82, -21.18], [40.47, -21.03], [40.32, -20.68], [39.97, -20.53], [39.75, -20.0]]]]}, "2018-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -20.0], [39.97, -19.47], [40.32, -19.32], [40.35, -19.25], [40.25, -19.0], [40.35, -18.75], [40.25, -18.5], [40.35, -18.25], [40.25, -18.0], [40.47, -17.47], [41.0, -17.25], [41.53, -17.47], [41.68, -17.82], [41.75, -17.85], [42.0, -17.75], [42.25, -17.85], [42.5, -17.75], [43.0, -17.96], [43.5, -17.75], [44.03, -17.97], [44.18, -18.32], [44.53, -18.47], [44.68, -18.82], [45.03, -18.97], [45.25, -19.5], [45.15, -19.75], [45.25, -20.0], [45.15, -20.25], [45.18, -20.32], [45.53, -20.47], [45.75, -21.0], [45.53, -21.53], [45.18, -21.68], [45.15, -21.75], [45.25, -22.0], [45.03, -22.53], [44.5, -22.75], [44.25, -22.65], [44.18, -22.68], [44.03, -23.03], [43.5, -23.25], [43.25, -23.15], [43.0, -23.25], [42.75, -23.15], [42.5, -23.25], [42.25, -23.15], [42.0, -23.25], [41.47, -23.03], [41.25, -22.5], [41.35, -22.25], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.82, -21.18], [40.47, -21.03], [40.32, -20.68], [39.97, -20.53], [39.75, -20.0]]]]}, "2018-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -20.0], [39.97, -19.47], [40.32, -19.32], [40.35, -19.25], [40.25, -19.0], [40.35, -18.75], [40.25, -18.5], [40.35, -18.25], [40.25, -18.0], [40.47, -17.47], [41.0, -17.25], [41.53, -17.47], [41.68, -17.82], [41.75, -17.85], [42.0, -17.75], [42.25, -17.85], [42.5, -17.75], [43.0, -17.96], [43.5, -17.75], [44.03, -17.97], [44.18, -18.32], [44.53, -18.47], [44.68, -18.82], [45.03, -18.97], [45.25, -19.5], [45.15, -19.75], [45.25, -20.0], [45.15, -20.25], [45.18, -20.32], [45.53, -20.47], [45.75, -21.0], [45.53, -21.53], [45.18, -21.68], [45.15, -21.75], [45.25, -22.0], [45.03, -22.53], [44.5, -22.75], [44.25, -22.65], [44.18, -22.68], [44.03, -23.03], [43.5, -23.25], [43.25, -23.15], [43.0, -23.25], [42.75, -23.15], [42.5, -23.25], [42.25, -23.15], [42.0, -23.25], [41.47, -23.03], [41.25, -22.5], [41.35, -22.25], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.82, -21.18], [40.47, -21.03], [40.32, -20.68], [39.97, -20.53], [39.75, -20.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5384773923981925}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0059551800208038}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.47966336438168, 21.498841996589988, 22.52032021695453]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.369950461497126, 18.44410889278396, 18.99063986121257]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.762450560026816, -2.667166298406913, -1.588248681628682]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9628213975177573, -3.5384773923981925, -2.979246037699852]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9697649535520654, -2.954180000399584, -1.6800818885571849]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.9119924390236904, -4.032244600197973, -2.500262622932503]}}