{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:47.317885", "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-May-06_to_2020-May-11_39.5_-3.0"}, "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": 2020050000172}, "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": "May 06 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 11 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 55595.03806427767}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -3.0}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.5, -2.25], [39.75, -2.35], [40.0, -2.25], [40.53, -2.47], [40.75, -3.0], [40.53, -3.53], [40.18, -3.68], [40.03, -4.03], [39.5, -4.25], [39.25, -4.15], [39.0, -4.25], [38.47, -4.03], [38.25, -3.5], [38.47, -2.97], [38.82, -2.82], [38.97, -2.47], [39.5, -2.25]]]]}, "2020-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.5, -2.25], [39.75, -2.35], [40.0, -2.25], [40.53, -2.47], [40.75, -3.0], [40.53, -3.53], [40.18, -3.68], [40.03, -4.03], [39.5, -4.25], [39.25, -4.15], [39.0, -4.25], [38.47, -4.03], [38.25, -3.5], [38.47, -2.97], [38.82, -2.82], [38.97, -2.47], [39.5, -2.25]]]]}, "2020-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.32, -2.32], [39.35, -2.25], [39.25, -2.0], [39.47, -1.47], [39.82, -1.32], [39.85, -1.25], [39.75, -1.0], [39.97, -0.47], [40.5, -0.25], [40.75, -0.35], [41.0, -0.25], [41.25, -0.35], [41.5, -0.25], [42.03, -0.47], [42.25, -1.0], [42.15, -1.25], [42.25, -1.5], [42.03, -2.03], [41.5, -2.25], [41.25, -2.15], [41.18, -2.18], [41.03, -2.53], [40.68, -2.68], [40.65, -2.75], [40.75, -3.0], [40.53, -3.53], [40.18, -3.68], [40.03, -4.03], [39.5, -4.25], [39.25, -4.15], [39.0, -4.25], [38.47, -4.03], [38.25, -3.5], [38.47, -2.97], [38.82, -2.82], [38.97, -2.47], [39.32, -2.32]]]]}, "2020-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -1.97], [38.82, -1.82], [38.97, -1.47], [39.32, -1.32], [39.47, -0.97], [39.82, -0.82], [39.97, -0.47], [40.5, -0.25], [40.75, -0.35], [41.0, -0.25], [41.25, -0.35], [41.5, -0.25], [42.03, -0.47], [42.25, -1.0], [42.15, -1.25], [42.25, -1.5], [42.03, -2.03], [41.5, -2.25], [41.25, -2.15], [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], [38.25, -3.0], [38.35, -2.75], [38.25, -2.5], [38.47, -1.97]]]]}, "2020-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -1.97], [38.82, -1.82], [38.97, -1.47], [39.32, -1.32], [39.47, -0.97], [39.82, -0.82], [39.97, -0.47], [40.5, -0.25], [40.75, -0.35], [41.0, -0.25], [41.25, -0.35], [41.5, -0.25], [42.03, -0.47], [42.25, -1.0], [42.15, -1.25], [42.25, -1.5], [42.03, -2.03], [41.5, -2.25], [41.25, -2.15], [41.18, -2.18], [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, -3.53], [38.25, -3.0], [38.35, -2.75], [38.25, -2.5], [38.47, -1.97]]]]}, "2020-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -1.97], [38.82, -1.82], [38.97, -1.47], [39.32, -1.32], [39.47, -0.97], [39.82, -0.82], [39.97, -0.47], [40.5, -0.25], [40.75, -0.35], [41.0, -0.25], [41.53, -0.47], [41.75, -1.0], [41.65, -1.25], [41.75, -1.5], [41.53, -2.03], [41.18, -2.18], [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, -3.53], [38.25, -3.0], [38.35, -2.75], [38.25, -2.5], [38.47, -1.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1186930454089747}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.00988320970099}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.480457458561887, 24.689062448133654, 25.289508533249204, 25.371059867605084, 25.22066075805043, 25.22021639239216]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.77885195282869, 23.841942242357618, 24.06377584102421, 24.750880756018944, 24.87181685691513, 24.684972537925375]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8652886791958991, -1.645232834724041, -1.82005604794289, -2.0128580652116312, -2.1869187964867893, -2.1484679200722385]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.170355808246768, -1.778788412591382, -2.2634678285487553, -2.701777709428484, -3.1186930454089747, -2.885426395483023]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7387587062987437, -1.5951535804536363, -1.790044548968096, -1.949504955457566, -2.1314066055404277, -2.0752298008129495]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8541966975982282, -1.6901707241329116, -2.2145680680499016, -2.515293568031363, -2.86752340323121, -2.6948606337759218]}}