{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:40.210214", "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-Jul-15_to_2022-Jul-19_0.5_28.5"}, "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": 2022070000649}, "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": "July 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 19 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 59709.27626510298}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 28.5}, "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": 0.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 2.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.32, 29.18], [0.47, 29.53], [1.0, 29.75], [1.25, 29.65], [1.5, 29.75], [1.75, 29.65], [2.0, 29.75], [2.53, 29.53], [2.68, 29.18], [3.03, 29.03], [3.25, 28.5], [3.03, 27.97], [2.5, 27.75], [2.25, 27.85], [2.18, 27.82], [2.03, 27.47], [1.5, 27.25], [1.25, 27.35], [1.0, 27.25], [0.75, 27.35], [0.5, 27.25], [0.25, 27.35], [0.0, 27.25], [-0.53, 27.47], [-0.75, 28.0], [-0.53, 28.53], [-0.18, 28.68], [-0.03, 29.03], [0.32, 29.18]]]]}, "2022-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 29.03], [-0.68, 29.18], [-0.53, 29.53], [0.0, 29.75], [0.25, 29.65], [0.32, 29.68], [0.47, 30.03], [1.0, 30.25], [1.25, 30.15], [1.5, 30.25], [2.03, 30.03], [2.18, 29.68], [2.53, 29.53], [2.68, 29.18], [3.03, 29.03], [3.25, 28.5], [3.03, 27.97], [2.5, 27.75], [2.25, 27.85], [2.18, 27.82], [2.03, 27.47], [1.5, 27.25], [1.25, 27.35], [1.0, 27.25], [0.75, 27.35], [0.5, 27.25], [0.25, 27.35], [0.0, 27.25], [-0.25, 27.35], [-0.5, 27.25], [-1.03, 27.47], [-1.25, 28.0], [-1.15, 28.25], [-1.25, 28.5], [-1.03, 29.03]]]]}, "2022-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.53, 29.03], [-1.18, 29.18], [-1.03, 29.53], [-0.5, 29.75], [-0.25, 29.65], [0.0, 29.75], [0.25, 29.65], [0.32, 29.68], [0.47, 30.03], [1.0, 30.25], [1.25, 30.15], [1.5, 30.25], [2.03, 30.03], [2.18, 29.68], [2.53, 29.53], [2.68, 29.18], [3.03, 29.03], [3.25, 28.5], [3.03, 27.97], [2.5, 27.75], [2.25, 27.85], [2.18, 27.82], [2.03, 27.47], [1.5, 27.25], [1.25, 27.35], [1.0, 27.25], [0.75, 27.35], [0.5, 27.25], [0.25, 27.35], [0.0, 27.25], [-0.25, 27.35], [-0.5, 27.25], [-0.75, 27.35], [-1.0, 27.25], [-1.53, 27.47], [-1.75, 28.0], [-1.65, 28.25], [-1.75, 28.5], [-1.53, 29.03]]]]}, "2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.53, 29.03], [-1.18, 29.18], [-1.03, 29.53], [-0.5, 29.75], [-0.25, 29.65], [0.0, 29.75], [0.25, 29.65], [0.32, 29.68], [0.47, 30.03], [1.0, 30.25], [1.25, 30.15], [1.5, 30.25], [2.03, 30.03], [2.25, 29.5], [2.03, 28.97], [1.68, 28.82], [1.53, 28.47], [1.18, 28.32], [1.03, 27.97], [0.68, 27.82], [0.53, 27.47], [0.0, 27.25], [-0.25, 27.35], [-0.5, 27.25], [-0.75, 27.35], [-1.0, 27.25], [-1.53, 27.47], [-1.75, 28.0], [-1.65, 28.25], [-1.75, 28.5], [-1.53, 29.03]]]]}, "2022-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.53, 29.03], [-1.18, 29.18], [-1.03, 29.53], [-0.5, 29.75], [-0.25, 29.65], [0.0, 29.75], [0.25, 29.65], [0.5, 29.75], [1.03, 29.53], [1.25, 29.0], [1.03, 28.47], [0.68, 28.32], [0.53, 27.97], [0.18, 27.82], [0.03, 27.47], [-0.5, 27.25], [-0.75, 27.35], [-1.0, 27.25], [-1.53, 27.47], [-1.75, 28.0], [-1.65, 28.25], [-1.75, 28.5], [-1.53, 29.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6334968094001283}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7051228331869837}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.963060231311886, 34.875499873932256, 34.95574557549094, 35.579989669671136, 35.954967074484955]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.65046746863709, 31.957530641468793, 32.60146295034281, 34.52856967554396, 35.435153263988866]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6704653011541573, -2.9277141584575563, -2.8247837602070676, -2.498315101015941, -2.235449749191325]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9914457955886746, -3.6334968094001283, -3.2082152522776255, -2.800131189195099, -2.450343265630522]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5410402954348144, -1.7126306250923264, -1.6867159791873585, -1.5762852796174762, -1.4640141252182093]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6382314761552546, -1.965648774370606, -1.9340138811123186, -1.7602254357316385, -1.599402564725388]}}