{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:31.054212", "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-07_to_2022-Jul-13_38.5_0.5"}, "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": 2022070000370}, "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 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 13 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 173025.28499934543}, "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"]}, "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": 0.5}, "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": 38.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "38.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[41.25, 1.0], [41.15, 0.75], [41.25, 0.5], [41.15, 0.25], [41.25, 0.0], [41.15, -0.25], [41.25, -0.5], [41.15, -0.75], [41.25, -1.0], [41.03, -1.53], [40.68, -1.68], [40.53, -2.03], [40.0, -2.25], [39.75, -2.15], [39.5, -2.25], [38.97, -2.03], [38.82, -1.68], [38.47, -1.53], [38.32, -1.18], [38.25, -1.15], [38.0, -1.25], [37.47, -1.03], [37.32, -0.68], [36.97, -0.53], [36.75, 0.0], [36.85, 0.25], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.38, 1.8], [35.97, 1.97], [35.75, 2.5], [35.88, 2.8], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.68, 4.18], [36.75, 4.15], [37.0, 4.25], [37.25, 4.15], [37.5, 4.25], [38.03, 4.03], [38.25, 3.5], [38.15, 3.25], [38.18, 3.18], [38.53, 3.03], [38.68, 2.68], [38.75, 2.65], [39.0, 2.75], [39.53, 2.53], [39.68, 2.18], [39.75, 2.15], [40.0, 2.25], [40.53, 2.03], [40.68, 1.68], [41.03, 1.53], [41.25, 1.0]]]]}}, "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": {"2022-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.25, 0.0], [37.35, 0.25], [37.25, 0.5], [37.35, 0.75], [37.25, 1.0], [37.47, 1.53], [37.82, 1.68], [37.97, 2.03], [38.5, 2.25], [38.75, 2.15], [39.0, 2.25], [39.53, 2.03], [39.68, 1.68], [39.75, 1.65], [40.0, 1.75], [40.53, 1.53], [40.75, 1.0], [40.65, 0.75], [40.75, 0.5], [40.65, 0.25], [40.75, 0.0], [40.65, -0.25], [40.75, -0.5], [40.65, -0.75], [40.75, -1.0], [40.53, -1.53], [40.0, -1.75], [39.75, -1.65], [39.5, -1.75], [39.25, -1.65], [39.0, -1.75], [38.47, -1.53], [38.32, -1.18], [38.25, -1.15], [38.0, -1.25], [37.47, -1.03], [37.25, -0.5], [37.35, -0.25], [37.25, 0.0]]]]}, "2022-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 2.03], [37.0, 2.25], [37.25, 2.15], [37.32, 2.18], [37.47, 2.53], [38.0, 2.75], [38.53, 2.53], [38.68, 2.18], [38.75, 2.15], [39.0, 2.25], [39.53, 2.03], [39.68, 1.68], [39.75, 1.65], [40.0, 1.75], [40.25, 1.65], [40.5, 1.75], [41.03, 1.53], [41.25, 1.0], [41.15, 0.75], [41.25, 0.5], [41.15, 0.25], [41.25, 0.0], [41.15, -0.25], [41.25, -0.5], [41.15, -0.75], [41.25, -1.0], [41.03, -1.53], [40.68, -1.68], [40.53, -2.03], [40.0, -2.25], [39.75, -2.15], [39.5, -2.25], [38.97, -2.03], [38.82, -1.68], [38.47, -1.53], [38.32, -1.18], [38.25, -1.15], [38.0, -1.25], [37.47, -1.03], [37.32, -0.68], [36.97, -0.53], [36.75, 0.0], [36.85, 0.25], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.47, 2.03]]], [[[36.0, 3.25], [35.47, 3.47], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.75, 4.0], [36.53, 3.47], [36.0, 3.25]]]]}, "2022-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.46, 2.0], [36.25, 2.5], [36.47, 3.03], [37.0, 3.25], [37.25, 3.15], [37.5, 3.25], [38.03, 3.03], [38.18, 2.68], [38.53, 2.53], [38.68, 2.18], [38.75, 2.15], [39.0, 2.25], [39.53, 2.03], [39.68, 1.68], [39.75, 1.65], [40.0, 1.75], [40.25, 1.65], [40.5, 1.75], [41.03, 1.53], [41.25, 1.0], [41.15, 0.75], [41.25, 0.5], [41.15, 0.25], [41.25, 0.0], [41.15, -0.25], [41.25, -0.5], [41.15, -0.75], [41.25, -1.0], [41.03, -1.53], [40.68, -1.68], [40.53, -2.03], [40.0, -2.25], [39.75, -2.15], [39.5, -2.25], [38.97, -2.03], [38.82, -1.68], [38.47, -1.53], [38.32, -1.18], [38.25, -1.15], [38.0, -1.25], [37.47, -1.03], [37.32, -0.68], [36.97, -0.53], [36.75, 0.0], [36.85, 0.25], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.46, 2.0]]], [[[36.0, 3.25], [35.47, 3.47], [35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.75, 4.0], [36.53, 3.47], [36.0, 3.25]]]]}, "2022-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.68, 4.18], [36.75, 4.15], [37.0, 4.25], [37.25, 4.15], [37.5, 4.25], [38.03, 4.03], [38.25, 3.5], [38.15, 3.25], [38.18, 3.18], [38.53, 3.03], [38.68, 2.68], [38.75, 2.65], [39.0, 2.75], [39.53, 2.53], [39.68, 2.18], [39.75, 2.15], [40.0, 2.25], [40.53, 2.03], [40.68, 1.68], [41.03, 1.53], [41.25, 1.0], [41.15, 0.75], [41.25, 0.5], [41.15, 0.25], [41.25, 0.0], [41.15, -0.25], [41.25, -0.5], [41.15, -0.75], [41.25, -1.0], [41.03, -1.53], [40.68, -1.68], [40.53, -2.03], [40.0, -2.25], [39.75, -2.15], [39.5, -2.25], [38.97, -2.03], [38.75, -1.5], [38.85, -1.25], [38.82, -1.18], [38.47, -1.03], [38.32, -0.68], [38.0, -0.54], [37.5, -0.75], [36.97, -0.53], [36.75, 0.0], [36.85, 0.25], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.38, 1.8], [35.97, 1.97], [35.75, 2.5], [35.88, 2.8], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0]]]]}, "2022-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.68, 4.18], [36.75, 4.15], [37.0, 4.25], [37.25, 4.15], [37.5, 4.25], [38.03, 4.03], [38.25, 3.5], [38.15, 3.25], [38.18, 3.18], [38.53, 3.03], [38.68, 2.68], [38.75, 2.65], [39.0, 2.75], [39.53, 2.53], [39.68, 2.18], [39.75, 2.15], [40.0, 2.25], [40.53, 2.03], [40.75, 1.5], [40.65, 1.25], [40.75, 1.0], [40.53, 0.47], [40.18, 0.32], [40.15, 0.25], [40.25, 0.0], [40.15, -0.25], [40.25, -0.5], [40.15, -0.75], [40.25, -1.0], [40.15, -1.25], [40.25, -1.5], [40.03, -2.03], [39.5, -2.25], [38.97, -2.03], [38.75, -1.5], [38.85, -1.25], [38.82, -1.18], [38.47, -1.03], [38.32, -0.68], [37.97, -0.53], [37.75, 0.0], [37.85, 0.25], [37.82, 0.32], [37.47, 0.47], [37.25, 1.0], [37.35, 1.25], [37.32, 1.32], [36.97, 1.47], [36.82, 1.82], [36.75, 1.85], [36.5, 1.75], [35.97, 1.97], [35.75, 2.5], [35.88, 2.8], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0]]]]}, "2022-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.68, 4.18], [36.75, 4.15], [37.0, 4.25], [37.25, 4.15], [37.5, 4.25], [38.03, 4.03], [38.25, 3.5], [38.15, 3.25], [38.18, 3.18], [38.53, 3.03], [38.68, 2.68], [38.75, 2.65], [39.0, 2.75], [39.53, 2.53], [39.68, 2.18], [39.75, 2.15], [40.0, 2.25], [40.53, 2.03], [40.75, 1.5], [40.65, 1.25], [40.75, 1.0], [40.53, 0.47], [40.18, 0.32], [40.15, 0.25], [40.25, 0.0], [40.15, -0.25], [40.25, -0.5], [40.15, -0.75], [40.25, -1.0], [40.15, -1.25], [40.25, -1.5], [40.03, -2.03], [39.5, -2.25], [38.97, -2.03], [38.75, -1.5], [38.85, -1.25], [38.82, -1.18], [38.47, -1.03], [38.32, -0.68], [37.97, -0.53], [37.75, 0.0], [37.85, 0.25], [37.82, 0.32], [37.47, 0.47], [37.25, 1.0], [37.35, 1.25], [37.32, 1.32], [36.97, 1.47], [36.82, 1.82], [36.75, 1.85], [36.5, 1.75], [35.97, 1.97], [35.75, 2.5], [35.88, 2.8], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0]]]]}, "2022-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 4.0], [35.47, 4.53], [36.0, 4.75], [36.53, 4.53], [36.75, 4.0], [36.65, 3.75], [36.75, 3.5], [36.53, 2.97], [36.0, 2.75], [35.47, 2.97], [35.25, 3.5], [35.35, 3.75], [35.25, 4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3089060147100327}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4014927825281571}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.80384459162076, 23.755042893257837, 24.19403063103283, 24.683542977915124, 25.407005880616055, 25.460668254114523, 26.777243604846376]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.64209625136033, 11.844976562112663, 11.78182057401392, 12.456966981999528, 23.036848404442765, 23.520181747421532, 26.520131614884633]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2158917928488904, -1.693590123724251, -1.3449654949328491, -1.3496476904428516, -1.4272129149100286, -1.3468422075262847, -0.8313651261638029]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.654247514129679, -2.3089060147100327, -1.7904654327185199, -1.775818407395036, -2.228635019674755, -1.8977132117025235, -0.8745598663468286]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4429988991331357, -2.0017921199237723, -1.5745725333367384, -1.5807395372915225, -1.6486672567045393, -1.5982095586362577, -1.344491802672494]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8899562651934743, -2.538108286258955, -2.190632565047487, -1.9687810827369427, -2.311586107991312, -2.0757514874736303, -1.451469101270779]}}