{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:05.166638", "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": "2023-Nov-15_to_2023-Nov-18_36.5_-4.5"}, "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": 2023110000355}, "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": "November 15 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 18 2023"}, "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": 70816.64074061115}, "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", "Tanzania, United Republic of"]}, "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": ["Indian Ocean"]}, "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": -4.5}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\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": 39.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.5}, "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": [[[[35.47, -3.97], [36.0, -3.75], [36.25, -3.85], [36.32, -3.82], [36.35, -3.75], [36.25, -3.5], [36.47, -2.97], [37.0, -2.75], [37.25, -2.85], [37.5, -2.75], [38.03, -2.97], [38.2, -3.38], [38.5, -3.25], [39.0, -3.46], [39.5, -3.25], [40.03, -3.47], [40.25, -4.0], [40.03, -4.53], [39.68, -4.68], [39.65, -4.75], [39.75, -5.0], [39.53, -5.53], [39.18, -5.68], [39.15, -5.75], [39.25, -6.0], [39.15, -6.25], [39.25, -6.5], [39.03, -7.03], [38.5, -7.25], [38.25, -7.15], [38.0, -7.25], [37.75, -7.15], [37.5, -7.25], [37.25, -7.15], [37.0, -7.25], [36.47, -7.03], [36.25, -6.5], [36.47, -5.97], [37.0, -5.75], [37.25, -5.85], [37.32, -5.82], [37.35, -5.75], [37.32, -5.68], [36.97, -5.53], [36.82, -5.18], [36.75, -5.15], [36.5, -5.25], [36.25, -5.15], [36.0, -5.25], [35.47, -5.03], [35.25, -4.5], [35.47, -3.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.35, -3.75], [36.25, -3.5], [36.47, -2.97], [37.0, -2.75], [37.53, -2.97], [37.75, -3.5], [37.65, -3.75], [37.68, -3.82], [37.8, -3.88], [37.97, -3.47], [38.5, -3.25], [39.0, -3.46], [39.5, -3.25], [40.03, -3.47], [40.25, -4.0], [40.03, -4.53], [39.68, -4.68], [39.65, -4.75], [39.75, -5.0], [39.53, -5.53], [39.18, -5.68], [39.15, -5.75], [39.25, -6.0], [39.15, -6.25], [39.25, -6.5], [39.03, -7.03], [38.5, -7.25], [38.25, -7.15], [38.0, -7.25], [37.75, -7.15], [37.5, -7.25], [37.25, -7.15], [37.0, -7.25], [36.47, -7.03], [36.25, -6.5], [36.47, -5.97], [37.0, -5.75], [37.25, -5.85], [37.32, -5.82], [37.35, -5.75], [37.32, -5.68], [36.97, -5.53], [36.82, -5.18], [36.75, -5.15], [36.5, -5.25], [35.97, -5.03], [35.75, -4.5], [35.97, -3.97], [36.32, -3.82], [36.35, -3.75]]]]}, "2023-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.0, -5.25], [35.47, -5.03], [35.25, -4.5], [35.47, -3.97], [36.0, -3.75], [36.25, -3.85], [36.32, 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-2.97], [38.2, -3.38], [38.5, -3.25], [39.0, -3.46], [39.5, -3.25], [40.03, -3.47], [40.25, -4.0], [40.03, -4.53], [39.68, -4.68], [39.65, -4.75], [39.75, -5.0], [39.53, -5.53], [39.18, -5.68], [39.15, -5.75], [39.25, -6.0], [39.15, -6.25], [39.25, -6.5], [39.03, -7.03], [38.5, -7.25], [38.25, -7.15], [38.0, -7.25], [37.75, -7.15], [37.5, -7.25], [37.25, -7.15], [37.0, -7.25], [36.47, -7.03], [36.25, -6.5], [36.47, -5.97], [37.0, -5.75], [37.25, -5.85], [37.32, -5.82], [37.35, -5.75], [37.32, -5.68], [36.97, -5.53], [36.82, -5.18], [36.75, -5.15], [36.5, -5.25], [36.25, -5.15], [36.0, -5.25]]]]}, "2023-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.0, -5.25], [35.47, -5.03], [35.25, -4.5], [35.47, -3.97], [36.0, -3.75], [36.25, -3.85], [36.38, -3.8], [36.25, -3.5], [36.47, -2.97], [37.0, -2.75], [37.25, -2.85], [37.5, -2.75], [38.03, -2.97], [38.25, -3.5], [38.15, -3.75], [38.25, -4.0], [38.15, -4.25], [38.25, -4.5], [38.03, -5.03], [37.5, -5.25], [37.25, -5.15], [37.0, -5.25], [36.75, -5.15], [36.5, -5.25], [36.25, -5.15], [36.0, -5.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.304539814168493}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0611590503368697}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.266295858756905, 22.21175088471597, 21.736091869985046, 22.52696770389349]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.47682336782003, 19.590358053120497, 18.770106165708683, 21.508750745234977]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2010063801416266, -2.295180892496393, -2.7969179045649195, -1.3323158199069667]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.577972543334738, -3.5351550696325376, -4.304539814168493, -1.5920966324388246]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.531710906533371, -2.8076715322866055, -3.431834663113233, -1.4636812877840575]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.07168908490216, -3.9073681972496295, -4.972772202706434, -1.7606005527165396]}}