{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:03.113190", "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": "2015-Jan-03_to_2015-Jan-08_353.5_7.5"}, "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": 2015010000282}, "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": "January 03 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 08 2015"}, "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": 116404.28833763165}, "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": ["C\u00f4te d'Ivoire", "Ghana"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-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": 7.5}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 353.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 8.53], [-6.5, 8.75], [-6.25, 8.65], [-6.0, 8.75], [-5.47, 8.53], [-5.25, 8.0], [-5.47, 7.47], [-5.82, 7.32], [-5.97, 6.97], [-6.5, 6.75], [-7.03, 6.97], [-7.25, 7.5], [-7.15, 7.75], [-7.25, 8.0], [-7.03, 8.53]]]]}, "2015-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 8.53], [-6.5, 8.75], [-6.25, 8.65], [-6.18, 8.68], [-6.03, 9.03], [-5.5, 9.25], [-5.25, 9.15], [-5.0, 9.25], [-4.47, 9.03], [-4.25, 8.5], [-4.35, 8.25], [-4.25, 8.0], [-4.47, 7.47], [-5.0, 7.25], [-5.25, 7.35], [-5.5, 7.25], [-5.75, 7.35], [-5.82, 7.32], [-5.97, 6.97], [-6.5, 6.75], [-7.03, 6.97], [-7.25, 7.5], [-7.15, 7.75], [-7.25, 8.0], [-7.03, 8.53]]]]}, "2015-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 8.53], [-6.5, 8.75], [-6.25, 8.65], [-6.18, 8.68], [-6.03, 9.03], [-5.5, 9.25], [-5.25, 9.15], [-5.18, 9.18], [-5.03, 9.53], [-4.5, 9.75], [-4.0, 9.54], [-3.5, 9.75], [-3.25, 9.65], [-3.0, 9.75], [-2.47, 9.53], [-2.25, 9.0], [-2.35, 8.75], [-2.25, 8.5], [-2.35, 8.25], [-2.3, 8.12], [-2.0, 8.25], [-1.47, 8.03], [-1.25, 7.5], [-1.47, 6.97], [-2.0, 6.75], [-2.53, 6.97], [-2.7, 7.38], [-2.82, 7.32], [-2.97, 6.97], [-3.5, 6.75], [-3.75, 6.85], [-4.0, 6.75], [-4.5, 6.96], [-5.0, 6.75], [-5.25, 6.85], [-5.32, 6.82], [-5.47, 6.47], [-6.0, 6.25], [-6.53, 6.47], [-6.68, 6.82], [-7.03, 6.97], [-7.25, 7.5], [-7.15, 7.75], [-7.25, 8.0], [-7.03, 8.53]]]]}, "2015-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 8.53], [-6.5, 8.75], [-6.25, 8.65], [-6.18, 8.68], [-6.03, 9.03], [-5.5, 9.25], [-5.25, 9.15], [-5.18, 9.18], [-5.03, 9.53], [-4.5, 9.75], [-4.0, 9.54], [-3.68, 9.68], [-3.53, 10.03], [-3.0, 10.25], [-2.47, 10.03], [-2.25, 9.5], [-2.35, 9.25], [-2.32, 9.18], [-1.97, 9.03], [-1.75, 8.5], [-1.87, 8.2], [-1.47, 8.03], [-1.25, 7.5], [-1.47, 6.97], [-1.82, 6.82], [-1.85, 6.75], [-1.75, 6.5], [-1.85, 6.25], [-1.75, 6.0], [-1.97, 5.47], [-2.5, 5.25], [-2.75, 5.35], [-3.0, 5.25], [-3.3, 5.38], [-3.47, 4.97], [-4.0, 4.75], [-4.53, 4.97], [-4.75, 5.5], [-4.65, 5.75], [-4.75, 6.0], [-4.65, 6.25], [-4.75, 6.5], [-4.57, 6.93], [-5.0, 6.75], [-5.25, 6.85], [-5.32, 6.82], [-5.47, 6.47], [-6.0, 6.25], [-6.53, 6.47], [-6.68, 6.82], [-7.03, 6.97], [-7.25, 7.5], [-7.15, 7.75], [-7.25, 8.0], [-7.03, 8.53]]]]}, "2015-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 8.53], [-6.5, 8.75], [-6.25, 8.65], [-6.18, 8.68], [-6.03, 9.03], [-5.5, 9.25], [-5.25, 9.15], [-5.18, 9.18], [-5.03, 9.53], [-4.5, 9.75], [-4.0, 9.54], [-3.68, 9.68], [-3.53, 10.03], [-3.0, 10.25], [-2.47, 10.03], [-2.25, 9.5], [-2.35, 9.25], [-2.32, 9.18], [-1.97, 9.03], [-1.75, 8.5], [-1.87, 8.2], [-1.47, 8.03], [-1.25, 7.5], [-1.47, 6.97], [-1.82, 6.82], [-1.85, 6.75], [-1.75, 6.5], [-1.85, 6.25], [-1.75, 6.0], [-1.97, 5.47], [-2.5, 5.25], [-2.75, 5.35], [-3.0, 5.25], [-3.3, 5.38], [-3.47, 4.97], [-4.0, 4.75], [-4.53, 4.97], [-4.75, 5.5], [-4.65, 5.75], [-4.75, 6.0], [-4.65, 6.25], [-4.75, 6.5], [-4.57, 6.93], [-5.0, 6.75], [-5.25, 6.85], [-5.32, 6.82], [-5.47, 6.47], [-6.0, 6.25], [-6.53, 6.47], [-6.68, 6.82], [-7.03, 6.97], [-7.25, 7.5], [-7.15, 7.75], [-7.25, 8.0], [-7.03, 8.53]]]]}, "2015-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 6.25], [-4.75, 6.5], [-4.53, 7.03], [-4.18, 7.18], [-4.15, 7.25], [-4.18, 7.32], [-4.53, 7.47], [-4.75, 8.0], [-4.53, 8.53], [-4.18, 8.68], [-4.15, 8.75], [-4.25, 9.0], [-4.03, 9.53], [-3.68, 9.68], [-3.53, 10.03], [-3.0, 10.25], [-2.47, 10.03], [-2.25, 9.5], [-2.35, 9.25], [-2.32, 9.18], [-1.97, 9.03], [-1.75, 8.5], [-1.97, 7.97], [-2.32, 7.82], [-2.35, 7.75], [-2.32, 7.68], [-1.97, 7.53], [-1.75, 7.0], [-1.85, 6.75], [-1.75, 6.5], [-1.85, 6.25], [-1.75, 6.0], [-1.97, 5.47], [-2.5, 5.25], [-2.75, 5.35], [-3.0, 5.25], [-3.3, 5.38], [-3.47, 4.97], [-4.0, 4.75], [-4.53, 4.97], [-4.75, 5.5], [-4.65, 5.75], [-4.75, 6.0], [-4.65, 6.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.792533546100856}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0641666209324616}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.203191684182514, 23.92334796172935, 24.08123142130728, 24.062456535702438, 24.177214590612266, 24.53318848370361]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.903964249860337, 23.318326039006024, 23.166478946275618, 22.802113261679438, 22.68972621167177, 23.187421050860564]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8883239147148174, -2.0000721876013228, -1.999883774565164, -2.1802790294883336, -2.1315712363273973, -1.8558377510197694]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.963403774987171, -2.3919581720815017, -2.4569111289109173, -2.792533546100856, -2.7554671780507647, -2.332603134669398]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4152576528227974, -1.507375652571669, -1.5510020613126068, -1.8005197126432413, -1.7739720829941572, -1.620306728577703]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5869567571897059, -1.686984373378549, -1.846493621662206, -2.3392278164165714, -2.155715356855346, -2.2014451243476625]}}