{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:28.152044", "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-Nov-14_to_2022-Nov-20_40.0_-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": 2022110000564}, "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 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 20 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": 58685.99655505647}, "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": -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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 37.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[38.82, -1.32], [38.97, -0.97], [39.32, -0.82], [39.47, -0.47], [40.0, -0.25], [40.53, -0.47], [40.68, -0.82], [40.75, -0.85], [41.0, -0.75], [41.53, -0.97], [41.75, -1.5], [41.53, -2.03], [41.18, -2.18], [41.03, -2.53], [40.68, -2.68], [40.65, -2.75], [40.75, -3.0], [40.53, -3.53], [40.0, -3.75], [39.75, -3.65], [39.5, -3.75], [39.25, -3.65], [39.0, -3.75], [38.47, -3.53], [38.32, -3.18], [38.25, -3.15], [38.0, -3.25], [37.75, -3.15], [37.5, -3.25], [36.97, -3.03], [36.75, -2.5], [36.97, -1.97], [37.32, -1.82], [37.47, -1.47], [38.0, -1.25], [38.5, -1.46], [38.82, -1.32]]]]}}, "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": {"2022-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.47, -1.47], [38.0, -1.25], [38.53, -1.47], [38.75, -2.0], [38.65, -2.25], [38.75, -2.5], [38.53, -3.03], [38.0, -3.25], [37.75, -3.15], [37.5, -3.25], [36.97, -3.03], [36.75, -2.5], [36.97, -1.97], [37.32, -1.82], [37.47, -1.47]]]]}, "2022-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.47, -1.47], [38.0, -1.25], [38.53, -1.47], [38.68, -1.82], [38.75, -1.85], [39.0, -1.75], [39.25, -1.85], [39.5, -1.75], [39.75, -1.85], [40.0, -1.75], [40.53, -1.97], [40.75, -2.5], [40.53, -3.03], [40.0, -3.25], [39.75, -3.15], [39.5, -3.25], [39.25, -3.15], [39.0, -3.25], [38.75, -3.15], [38.5, -3.25], [38.25, -3.15], [38.0, -3.25], [37.75, -3.15], [37.5, -3.25], [36.97, -3.03], [36.75, -2.5], [36.97, -1.97], [37.32, -1.82], [37.47, -1.47]]]]}, "2022-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.47, -1.47], [38.0, -1.25], [38.5, -1.46], [38.82, -1.32], [38.97, -0.97], [39.5, -0.75], [39.75, -0.85], [40.0, -0.75], [40.25, -0.85], [40.5, -0.75], [41.03, -0.97], [41.25, -1.5], [41.15, -1.75], [41.25, -2.0], [41.03, -2.53], [40.68, -2.68], [40.53, -3.03], [40.18, -3.18], [40.03, -3.53], [39.5, -3.75], [39.25, -3.65], [39.0, -3.75], [38.47, 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{"type": "MultiPolygon", "coordinates": [[[[39.47, -0.97], [40.0, -0.75], [40.53, -0.97], [40.75, -1.5], [40.53, -2.03], [40.0, -2.25], [39.47, -2.03], [39.25, -1.5], [39.47, -0.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7812218586429935}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.780773508890519}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.82665857046038, 24.081350264767764, 25.208778474090195, 24.436729997958935, 26.03644943673038, 25.55066383628582, 26.853617292799186]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.544314176782507, 21.642359936897606, 21.266871000975527, 19.515209978251164, 25.418566383452344, 24.872348124579332, 26.853617292799186]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.596920880609029, -1.3764812058605003, -1.4580289888254931, -2.3412342770968015, -1.4667431983825623, -1.982137039680807, -1.3675369358311968]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8021898614716747, -1.5575208041501014, -1.8332603273690893, -3.7812218586429935, -1.9076135392264746, -2.5584443096132645, -1.3675369358311968]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6704331800414736, -1.5993308697187394, -1.752476430430815, -2.8630122559510327, -1.8063186785876166, -2.4098402383399935, -1.4315045406948872]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum 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