{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:26.386335", "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": "2024-Apr-28_to_2024-Apr-30_354.5_32.0"}, "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": 2024040000643}, "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": "April 28 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 101046.24369914611}, "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": ["Morocco"]}, "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": 32.0}, "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": 354.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 353.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-6.53, 32.53], [-6.18, 32.68], [-6.15, 32.75], [-6.18, 32.82], [-6.53, 32.97], [-6.75, 33.5], [-6.53, 34.03], [-6.0, 34.25], [-5.75, 34.15], [-5.5, 34.25], [-5.25, 34.15], [-5.12, 34.2], [-5.25, 34.5], [-5.03, 35.03], [-4.5, 35.25], [-4.25, 35.15], [-4.0, 35.25], [-3.75, 35.15], [-3.5, 35.25], [-3.25, 35.15], [-3.0, 35.25], [-2.75, 35.15], [-2.5, 35.25], [-1.97, 35.03], [-1.75, 34.5], [-1.85, 34.25], [-1.75, 34.0], [-1.85, 33.75], [-1.75, 33.5], [-1.85, 33.25], [-1.75, 33.0], [-1.97, 32.47], [-2.32, 32.32], [-2.47, 31.97], [-2.82, 31.82], [-2.97, 31.47], [-3.5, 31.25], [-3.75, 31.35], [-4.0, 31.25], [-4.25, 31.35], [-4.5, 31.25], [-4.75, 31.35], [-5.0, 31.25], [-5.25, 31.35], [-5.32, 31.32], [-5.47, 30.97], [-6.0, 30.75], [-6.25, 30.85], [-6.32, 30.82], [-6.47, 30.47], [-7.0, 30.25], [-7.53, 30.47], [-7.75, 31.0], [-7.53, 31.53], [-7.18, 31.68], [-7.03, 32.03], [-6.68, 32.18], [-6.53, 32.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.029999999999973, 32.03], [-6.680000000000007, 32.18], [-6.529999999999973, 32.53], [-6.180000000000007, 32.68], [-6.149999999999977, 32.75], [-6.180000000000007, 32.82], [-6.529999999999973, 32.97], [-6.75, 33.5], [-6.529999999999973, 34.03], [-6.0, 34.25], [-5.75, 34.15], [-5.5, 34.25], [-5.25, 34.15], [-5.1200000000000045, 34.2], [-5.25, 34.5], [-5.029999999999973, 35.03], [-4.5, 35.25], [-4.25, 35.15], [-4.0, 35.25], [-3.75, 35.15], [-3.5, 35.25], [-3.25, 35.15], [-3.0, 35.25], [-2.75, 35.15], [-2.5, 35.25], [-1.9700000000000273, 35.03], [-1.75, 34.5], [-1.8500000000000227, 34.25], [-1.75, 34.0], [-1.8500000000000227, 33.75], [-1.75, 33.5], [-1.8500000000000227, 33.25], [-1.75, 33.0], [-1.9700000000000273, 32.47], [-2.319999999999993, 32.32], [-2.4700000000000273, 31.97], [-2.819999999999993, 31.82], [-2.9700000000000273, 31.47], [-3.5, 31.25], [-3.75, 31.35], [-4.0, 31.25], [-4.25, 31.35], [-4.5, 31.25], [-4.75, 31.35], [-5.0, 31.25], [-5.25, 31.35], [-5.319999999999993, 31.32], [-5.470000000000027, 30.97], [-6.0, 30.75], [-6.25, 30.85], [-6.319999999999993, 30.82], [-6.470000000000027, 30.47], [-7.0, 30.25], [-7.529999999999973, 30.47], [-7.75, 31.0], [-7.529999999999973, 31.53], [-7.180000000000007, 31.68], [-7.029999999999973, 32.03]]]]}, "2024-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.029999999999973, 32.03], [-6.680000000000007, 32.18], [-6.529999999999973, 32.53], [-6.180000000000007, 32.68], [-6.149999999999977, 32.75], [-6.180000000000007, 32.82], [-6.529999999999973, 32.97], [-6.75, 33.5], [-6.529999999999973, 34.03], [-6.0, 34.25], [-5.75, 34.15], [-5.5, 34.25], [-5.25, 34.15], [-5.1200000000000045, 34.2], [-5.25, 34.5], [-5.029999999999973, 35.03], [-4.5, 35.25], [-4.25, 35.15], [-4.0, 35.25], [-3.75, 35.15], [-3.5, 35.25], [-3.25, 35.15], [-3.0, 35.25], [-2.75, 35.15], [-2.5, 35.25], [-1.9700000000000273, 35.03], [-1.75, 34.5], [-1.8500000000000227, 34.25], [-1.75, 34.0], [-1.8500000000000227, 33.75], [-1.75, 33.5], [-1.8500000000000227, 33.25], [-1.75, 33.0], [-1.9700000000000273, 32.47], [-2.319999999999993, 32.32], [-2.4700000000000273, 31.97], [-2.819999999999993, 31.82], [-2.9700000000000273, 31.47], [-3.5, 31.25], [-3.75, 31.35], [-4.0, 31.25], [-4.25, 31.35], [-4.5, 31.25], [-4.75, 31.35], [-5.0, 31.25], [-5.25, 31.35], [-5.319999999999993, 31.32], [-5.470000000000027, 30.97], [-6.0, 30.75], [-6.25, 30.85], [-6.319999999999993, 30.82], [-6.470000000000027, 30.47], [-7.0, 30.25], [-7.529999999999973, 30.47], [-7.75, 31.0], [-7.529999999999973, 31.53], [-7.180000000000007, 31.68], [-7.029999999999973, 32.03]]]]}, "2024-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.029999999999973, 32.03], [-6.680000000000007, 32.18], [-6.529999999999973, 32.53], [-6.180000000000007, 32.68], [-6.149999999999977, 32.75], [-6.180000000000007, 32.82], [-6.529999999999973, 32.97], [-6.75, 33.5], [-6.529999999999973, 34.03], [-6.0, 34.25], [-5.75, 34.15], [-5.5, 34.25], [-5.25, 34.15], [-5.1200000000000045, 34.2], [-5.25, 34.5], [-5.029999999999973, 35.03], [-4.5, 35.25], [-4.25, 35.15], [-4.0, 35.25], [-3.75, 35.15], [-3.5, 35.25], [-3.25, 35.15], [-3.0, 35.25], [-2.75, 35.15], [-2.5, 35.25], [-1.9700000000000273, 35.03], [-1.75, 34.5], [-1.8500000000000227, 34.25], [-1.75, 34.0], [-1.8500000000000227, 33.75], [-1.75, 33.5], [-1.8500000000000227, 33.25], [-1.75, 33.0], [-1.9700000000000273, 32.47], [-2.319999999999993, 32.32], [-2.4700000000000273, 31.97], [-2.819999999999993, 31.82], [-2.9700000000000273, 31.47], [-3.5, 31.25], [-3.75, 31.35], [-4.0, 31.25], [-4.25, 31.35], [-4.5, 31.25], [-4.75, 31.35], [-5.0, 31.25], [-5.25, 31.35], [-5.319999999999993, 31.32], [-5.470000000000027, 30.97], [-6.0, 30.75], [-6.25, 30.85], [-6.319999999999993, 30.82], [-6.470000000000027, 30.47], [-7.0, 30.25], [-7.529999999999973, 30.47], [-7.75, 31.0], [-7.529999999999973, 31.53], [-7.180000000000007, 31.68], [-7.029999999999973, 32.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.49364432648838}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.042235309191973}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.891017081368602, 8.741649580251305, 9.80713117545696]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.29119891320255, 1.773557142429695, 3.7705093131156104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.57297889477958, -6.794432536425313, -5.759294496371028]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.939837355807299, -8.49364432648838, -7.180383052848072]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6589884551374883, -1.9766933911460147, -1.5866225066049404]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9693158263580883, -2.5538242160873152, -2.0808840407551084]}}