{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:38.744363", "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-10_to_2022-Jul-12_0.5_29.0"}, "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": 2022070000447}, "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 10 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2022"}, "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": 80834.75228470471}, "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": ["Mediterranean", "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": 29.0}, "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": 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": -0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 3.25}, "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": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.15, 28.75], [-1.25, 29.0], [-1.03, 29.53], [-0.68, 29.68], [-0.53, 30.03], [0.0, 30.25], [0.25, 30.15], [0.32, 30.18], [0.47, 30.53], [1.0, 30.75], [1.25, 30.65], [1.5, 30.75], [1.75, 30.65], [1.87, 30.7], [1.75, 31.0], [1.97, 31.53], [2.32, 31.68], [2.47, 32.03], [3.0, 32.25], [3.53, 32.03], [3.75, 31.5], [3.54, 31.0], [3.75, 30.5], [3.65, 30.25], [3.75, 30.0], [3.65, 29.75], [3.75, 29.5], [3.65, 29.25], [3.75, 29.0], [3.53, 28.47], [3.0, 28.25], [2.75, 28.35], [2.5, 28.25], [2.25, 28.35], [2.18, 28.32], [2.03, 27.97], [1.5, 27.75], [1.25, 27.85], [1.0, 27.75], [0.75, 27.85], [0.68, 27.82], [0.53, 27.47], [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], [-1.15, 28.75]]]]}, "2022-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.15, 28.75], [-1.25, 29.0], [-1.03, 29.53], [-0.68, 29.68], [-0.53, 30.03], [0.0, 30.25], [0.25, 30.15], [0.32, 30.18], [0.47, 30.53], [1.0, 30.75], [1.25, 30.65], [1.5, 30.75], [1.75, 30.65], [1.87, 30.7], [1.75, 31.0], [1.97, 31.53], [2.32, 31.68], [2.47, 32.03], [3.0, 32.25], [3.53, 32.03], [3.75, 31.5], [3.54, 31.0], [3.75, 30.5], [3.65, 30.25], [3.75, 30.0], [3.65, 29.75], [3.75, 29.5], [3.65, 29.25], [3.75, 29.0], [3.53, 28.47], [3.0, 28.25], [2.75, 28.35], [2.5, 28.25], [2.25, 28.35], [2.18, 28.32], [2.03, 27.97], [1.5, 27.75], [1.25, 27.85], [1.0, 27.75], [0.75, 27.85], [0.68, 27.82], [0.53, 27.47], [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], [-1.15, 28.75]]]]}, "2022-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.15, 28.75], [-1.25, 29.0], [-1.03, 29.53], [-0.68, 29.68], [-0.53, 30.03], [0.0, 30.25], [0.25, 30.15], [0.32, 30.18], [0.47, 30.53], [1.0, 30.75], [1.25, 30.65], [1.5, 30.75], [1.75, 30.65], [1.87, 30.7], [1.75, 31.0], [1.97, 31.53], [2.32, 31.68], [2.47, 32.03], [3.0, 32.25], [3.53, 32.03], [3.75, 31.5], [3.54, 31.0], [3.75, 30.5], [3.65, 30.25], [3.75, 30.0], [3.65, 29.75], [3.75, 29.5], [3.65, 29.25], [3.75, 29.0], [3.53, 28.47], [3.0, 28.25], [2.75, 28.35], [2.5, 28.25], [2.25, 28.35], [2.18, 28.32], [2.03, 27.97], [1.5, 27.75], [1.25, 27.85], [1.0, 27.75], [0.75, 27.85], [0.68, 27.82], [0.53, 27.47], [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], [-1.15, 28.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.435335855029564}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.318169290096421}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.11984827241048, 33.35296260283911, 33.97830392366717]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.14871349298727, 30.80697571359491, 31.299123400623387]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.010260885414319, -3.8024985075093714, -3.141748477365572]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.362338487749753, -4.435335855029564, -3.560243808565758]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.584974662181413, -2.0237985196540893, -1.708638231888189]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8489527083980408, -2.269969221717308, -2.127619485401778]}}