{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:35.838191", "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": "2022-Jul-14_to_2022-Jul-18_41.5_2.5"}, "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": 2022070000661}, "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 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 95768.45802855381}, "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": ["Kenya", "Somalia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 2.5}, "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": 41.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[40.35, 1.25], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0], [40.35, 2.25], [40.25, 2.5], [40.47, 3.03], [40.82, 3.18], [40.85, 3.25], [40.75, 3.5], [40.97, 4.03], [41.5, 4.25], [42.03, 4.03], [42.18, 3.68], [42.25, 3.65], [42.5, 3.75], [43.03, 3.53], [43.2, 3.12], [43.5, 3.25], [43.75, 3.15], [44.0, 3.25], [44.53, 3.03], [44.75, 2.5], [44.53, 1.97], [44.18, 1.82], [44.03, 1.47], [43.68, 1.32], [43.53, 0.97], [43.18, 0.82], [43.03, 0.47], [42.68, 0.32], [42.65, 0.25], [42.75, 0.0], [42.53, -0.53], [42.0, -0.75], [41.75, -0.65], [41.5, -0.75], [41.25, -0.65], [41.0, -0.75], [40.47, -0.53], [40.25, 0.0], [40.35, 0.25], [40.25, 0.5], [40.35, 0.75], [40.25, 1.0], [40.35, 1.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 0.5], [40.35, 0.75], [40.25, 1.0], [40.35, 1.25], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0], [40.35, 2.25], [40.25, 2.5], [40.47, 3.03], [40.82, 3.18], [40.97, 3.53], [41.5, 3.75], [41.75, 3.65], [42.0, 3.75], [42.25, 3.65], [42.5, 3.75], [43.03, 3.53], [43.2, 3.12], [43.5, 3.25], [43.75, 3.15], [44.0, 3.25], [44.53, 3.03], [44.75, 2.5], [44.53, 1.97], [44.18, 1.82], [44.03, 1.47], [43.68, 1.32], [43.53, 0.97], [43.18, 0.82], [43.03, 0.47], [42.68, 0.32], [42.65, 0.25], [42.75, 0.0], [42.53, -0.53], [42.0, -0.75], [41.75, -0.65], [41.5, -0.75], [41.25, -0.65], [41.0, -0.75], [40.47, -0.53], [40.25, 0.0], [40.35, 0.25], [40.25, 0.5]]]]}, "2022-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 0.5], [40.35, 0.75], [40.25, 1.0], [40.35, 1.25], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0], [40.35, 2.25], [40.25, 2.5], [40.47, 3.03], [40.82, 3.18], [40.85, 3.25], [40.75, 3.5], [40.97, 4.03], [41.5, 4.25], [42.03, 4.03], [42.18, 3.68], [42.25, 3.65], [42.5, 3.75], [43.03, 3.53], [43.2, 3.12], [43.5, 3.25], [43.75, 3.15], [44.0, 3.25], [44.53, 3.03], [44.75, 2.5], [44.53, 1.97], [44.18, 1.82], [44.03, 1.47], [43.68, 1.32], [43.53, 0.97], [43.18, 0.82], [43.03, 0.47], [42.68, 0.32], [42.65, 0.25], [42.75, 0.0], [42.53, -0.53], [42.0, -0.75], [41.75, -0.65], [41.5, -0.75], [41.25, -0.65], [41.0, -0.75], [40.47, -0.53], [40.25, 0.0], [40.35, 0.25], [40.25, 0.5]]]]}, "2022-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 0.5], [40.35, 0.75], [40.25, 1.0], [40.35, 1.25], [40.25, 1.5], [40.35, 1.75], [40.25, 2.0], [40.35, 2.25], [40.25, 2.5], [40.47, 3.03], [40.82, 3.18], [40.85, 3.25], [40.75, 3.5], [40.97, 4.03], [41.5, 4.25], [42.03, 4.03], [42.18, 3.68], [42.25, 3.65], [42.5, 3.75], [43.03, 3.53], [43.2, 3.12], [43.5, 3.25], [43.75, 3.15], [44.0, 3.25], [44.53, 3.03], [44.75, 2.5], [44.53, 1.97], [44.18, 1.82], [44.03, 1.47], [43.68, 1.32], [43.53, 0.97], [43.18, 0.82], [43.03, 0.47], [42.68, 0.32], [42.65, 0.25], [42.75, 0.0], [42.53, -0.53], [42.0, -0.75], [41.75, -0.65], [41.5, -0.75], [41.25, -0.65], [41.0, -0.75], [40.47, -0.53], [40.25, 0.0], [40.35, 0.25], [40.25, 0.5]]]]}, "2022-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.75, 2.5], [40.85, 2.75], [40.75, 3.0], [40.85, 3.25], [40.75, 3.5], [40.97, 4.03], [41.5, 4.25], [42.03, 4.03], [42.18, 3.68], [42.53, 3.53], [42.75, 3.0], [42.65, 2.75], [42.75, 2.5], [42.53, 1.97], [42.18, 1.82], [42.03, 1.47], [41.5, 1.25], [40.97, 1.47], [40.75, 2.0], [40.85, 2.25], [40.75, 2.5]]]]}, "2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.75, 2.5], [40.85, 2.75], [40.75, 3.0], [40.97, 3.53], [41.5, 3.75], [41.75, 3.65], [42.0, 3.75], [42.53, 3.53], [42.75, 3.0], [42.65, 2.75], [42.75, 2.5], [42.53, 1.97], [42.18, 1.82], [42.03, 1.47], [41.5, 1.25], [40.97, 1.47], [40.75, 2.0], [40.85, 2.25], [40.75, 2.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7878214753603743}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5886010090156018}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.961060143249597, 24.875193459038087, 25.340733774268188, 24.921042482160658, 24.92433101419141]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.11114712645599, 23.024314245473022, 23.679082536940257, 24.175920425389563, 24.367571759312852]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7482771640427568, -1.8186231599289393, -1.3396650918727735, -1.1738511200456305, -1.2455092962394816]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7878214753603743, -2.7167333434231864, -2.0964935447082667, -1.5181435765948095, -1.462669778276279]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.6414591911681895, -2.8389977375867437, -2.08632315958837, -1.6079718238607275, -1.7178717744159626]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-4.459343753878776, -3.8441508438736465, -2.9947860030705535, -2.0513869534012876, -1.9567724396074309]}}