{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:44.162670", "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": "2020-Jul-27_to_2020-Jul-30_30.5_13.0"}, "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": 2020070000922}, "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": "July 27 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 30 2020"}, "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": 69408.61679166835}, "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": ["Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-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": 13.0}, "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": 30.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "30.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.35, 12.75], [29.25, 13.0], [29.47, 13.53], [30.0, 13.75], [30.25, 13.65], [30.32, 13.68], [30.47, 14.03], [31.0, 14.25], [31.25, 14.15], [31.5, 14.25], [31.75, 14.15], [32.0, 14.25], [32.25, 14.15], [32.5, 14.25], [33.03, 14.03], [33.25, 13.5], [33.03, 12.97], [32.5, 12.75], [32.25, 12.85], [32.18, 12.82], [32.04, 12.5], [32.25, 12.0], [32.15, 11.75], [32.25, 11.5], [32.15, 11.25], [32.25, 11.0], [32.03, 10.47], [31.5, 10.25], [31.25, 10.35], [31.0, 10.25], [30.47, 10.47], [30.32, 10.82], [29.97, 10.97], [29.82, 11.32], [29.47, 11.47], [29.25, 12.0], [29.35, 12.25], [29.25, 12.5], [29.35, 12.75]]]]}, "2020-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.97, 13.53], [29.5, 13.75], [29.75, 13.65], [29.82, 13.68], [29.97, 14.03], [30.5, 14.25], [30.75, 14.15], [31.0, 14.25], [31.25, 14.15], [31.5, 14.25], [31.75, 14.15], [32.0, 14.25], [32.25, 14.15], [32.5, 14.25], [33.03, 14.03], [33.25, 13.5], [33.03, 12.97], [32.5, 12.75], [32.25, 12.85], [32.18, 12.82], [32.04, 12.5], [32.25, 12.0], [32.15, 11.75], [32.25, 11.5], [32.15, 11.25], [32.25, 11.0], [32.03, 10.47], [31.5, 10.25], [31.25, 10.35], [31.0, 10.25], [30.47, 10.47], [30.32, 10.82], [29.97, 10.97], [29.82, 11.32], [29.47, 11.47], [29.32, 11.82], [28.97, 11.97], [28.75, 12.5], [28.85, 12.75], [28.75, 13.0], [28.97, 13.53]]]]}, "2020-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.97, 13.53], [29.5, 13.75], [29.75, 13.65], [29.82, 13.68], [29.97, 14.03], [30.5, 14.25], [30.75, 14.15], [31.0, 14.25], [31.25, 14.15], [31.5, 14.25], [31.75, 14.15], [32.0, 14.25], [32.25, 14.15], [32.5, 14.25], [33.03, 14.03], [33.25, 13.5], [33.03, 12.97], [32.5, 12.75], [32.25, 12.85], [32.18, 12.82], [32.04, 12.5], [32.25, 12.0], [32.15, 11.75], [32.25, 11.5], [32.15, 11.25], [32.25, 11.0], [32.03, 10.47], [31.5, 10.25], [31.25, 10.35], [31.0, 10.25], [30.47, 10.47], [30.32, 10.82], [29.97, 10.97], [29.82, 11.32], [29.47, 11.47], [29.32, 11.82], [28.97, 11.97], [28.75, 12.5], [28.85, 12.75], [28.75, 13.0], [28.97, 13.53]]]]}, "2020-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.97, 13.53], [29.5, 13.75], [29.75, 13.65], [29.82, 13.68], [29.97, 14.03], [30.5, 14.25], [31.03, 14.03], [31.25, 13.5], [31.15, 13.25], [31.25, 13.0], [31.03, 12.47], [30.68, 12.32], [30.53, 11.97], [30.0, 11.75], [29.75, 11.85], [29.5, 11.75], [28.97, 11.97], [28.75, 12.5], [28.85, 12.75], [28.75, 13.0], [28.97, 13.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.602286772241939}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.322537831888693}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.740561471191086, 24.309539025257266, 23.820312303745823, 25.183697445128928]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.822495870191688, 22.161524967539094, 22.149025134470662, 24.452879502290614]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9054070757644297, -2.3472733068869416, -2.77787877707382, -1.8726807415999644]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.46326701418576, -3.206172282953389, -3.602286772241939, -2.093410709584589]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5137807597906692, -1.8849984396616544, -2.1592729209916826, -1.3834997234003288]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7446530596612548, -2.8025684803499904, -2.525305055000434, -1.4913983205711963]}}