{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:20.408081", "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": "2019-Mar-22_to_2019-Mar-27_348.5_11.0"}, "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": 2019030000640}, "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": "March 22 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 2019"}, "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": 54645.25678031321}, "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": ["Guinea"]}, "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": 11.0}, "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": 348.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "348.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 11.53], [-12.18, 11.68], [-12.03, 12.03], [-11.5, 12.25], [-11.25, 12.15], [-11.0, 12.25], [-10.47, 12.03], [-10.25, 11.5], [-10.37, 11.2], [-10.25, 11.15], [-10.18, 11.18], [-10.03, 11.53], [-9.5, 11.75], [-9.25, 11.65], [-9.0, 11.75], [-8.75, 11.65], [-8.5, 11.75], [-7.97, 11.53], [-7.75, 11.0], [-7.97, 10.47], [-8.5, 10.25], [-8.75, 10.35], [-8.82, 10.32], [-8.85, 10.25], [-8.75, 10.0], [-8.97, 9.47], [-9.5, 9.25], [-9.75, 9.35], [-10.0, 9.25], [-10.25, 9.35], [-10.5, 9.25], [-11.03, 9.47], [-11.18, 9.82], [-11.5, 9.96], [-12.0, 9.75], [-12.53, 9.97], [-12.75, 10.5], [-12.65, 10.75], [-12.75, 11.0], [-12.53, 11.53]]]]}, "2019-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 11.25], [-12.75, 11.5], [-12.53, 12.03], [-12.0, 12.25], [-11.75, 12.15], [-11.5, 12.25], [-11.25, 12.15], [-11.0, 12.25], [-10.47, 12.03], [-10.25, 11.5], [-10.37, 11.2], [-10.25, 11.15], [-10.18, 11.18], [-10.03, 11.53], [-9.5, 11.75], [-9.25, 11.65], [-9.0, 11.75], [-8.75, 11.65], [-8.5, 11.75], [-7.97, 11.53], [-7.75, 11.0], [-7.97, 10.47], [-8.5, 10.25], [-8.75, 10.35], [-8.82, 10.32], [-8.85, 10.25], [-8.75, 10.0], [-8.97, 9.47], [-9.5, 9.25], [-9.75, 9.35], [-10.0, 9.25], [-10.25, 9.35], [-10.5, 9.25], [-11.03, 9.47], [-11.18, 9.82], [-11.5, 9.96], [-12.0, 9.75], [-12.53, 9.97], [-12.75, 10.5], [-12.65, 10.75], [-12.75, 11.0], [-12.65, 11.25]]]]}, "2019-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 11.25], [-12.75, 11.5], [-12.53, 12.03], [-12.0, 12.25], [-11.75, 12.15], [-11.68, 12.18], [-11.53, 12.53], [-11.0, 12.75], [-10.47, 12.53], [-10.25, 12.0], [-10.35, 11.75], [-10.25, 11.5], [-10.37, 11.2], [-10.25, 11.15], [-10.18, 11.18], [-10.03, 11.53], [-9.5, 11.75], [-9.25, 11.65], [-9.0, 11.75], [-8.75, 11.65], [-8.5, 11.75], [-7.97, 11.53], [-7.75, 11.0], [-7.97, 10.47], [-8.5, 10.25], [-8.75, 10.35], [-8.82, 10.32], [-8.85, 10.25], [-8.75, 10.0], [-8.97, 9.47], [-9.5, 9.25], [-9.75, 9.35], [-10.0, 9.25], [-10.25, 9.35], [-10.5, 9.25], [-11.03, 9.47], [-11.18, 9.82], [-11.5, 9.96], [-12.0, 9.75], [-12.53, 9.97], [-12.75, 10.5], [-12.65, 10.75], [-12.75, 11.0], [-12.65, 11.25]]]]}, "2019-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 12.03], [-12.0, 12.25], [-11.75, 12.15], [-11.68, 12.18], [-11.53, 12.53], [-11.0, 12.75], [-10.47, 12.53], [-10.25, 12.0], [-10.35, 11.75], [-10.25, 11.5], [-10.35, 11.25], [-10.25, 11.0], [-10.47, 10.47], [-11.0, 10.25], [-11.25, 10.35], [-11.5, 10.25], [-11.75, 10.35], [-12.0, 10.25], [-12.53, 10.47], [-12.75, 11.0], [-12.65, 11.25], [-12.75, 11.5], [-12.53, 12.03]]]]}, "2019-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 12.03], [-12.0, 12.25], [-11.75, 12.15], [-11.68, 12.18], [-11.53, 12.53], [-11.0, 12.75], [-10.47, 12.53], [-10.25, 12.0], [-10.35, 11.75], [-10.25, 11.5], [-10.35, 11.25], [-10.25, 11.0], [-10.47, 10.47], [-11.0, 10.25], [-11.25, 10.35], [-11.5, 10.25], [-11.75, 10.35], [-12.0, 10.25], [-12.53, 10.47], [-12.75, 11.0], [-12.65, 11.25], [-12.75, 11.5], [-12.53, 12.03]]]]}, "2019-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 10.47], [-12.75, 11.0], [-12.53, 11.53], [-12.0, 11.75], [-11.75, 11.65], [-11.5, 11.75], [-11.25, 11.65], [-11.0, 11.75], [-10.47, 11.53], [-10.25, 11.0], [-10.47, 10.47], [-11.0, 10.25], [-11.25, 10.35], [-11.5, 10.25], [-11.75, 10.35], [-12.0, 10.25], [-12.53, 10.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.76176252707387}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7474361828173923}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.033199320908693, 27.168975694488893, 27.562336342215474, 27.10274204757991, 26.41071108831585, 27.475326376505734]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.629680152622882, 25.599902168350752, 24.359551193528148, 25.287125255254125, 24.486964796780285, 26.327947436398688]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9830840560380656, -2.593051655459867, -2.2027579236603088, -2.1209993543330206, -2.8513369472718995, -1.698341913913983]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.76176252707387, -3.495618217566971, -2.9974835991747, -2.8107029199078397, -3.3445730991706455, -1.7177746226205954]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-3.4131483021766593, -2.157411897123369, -1.8248101872582139, -1.8532073183999198, -2.520779248601209, -1.528902857072323]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-4.442258370780374, -2.5991828442163514, -2.7348518324019273, -2.473341448687503, -2.9677815460477914, -1.5738754229096852]}}