{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:37.129956", "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-21_0.0_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": 2022070000716}, "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 21 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 65218.24254771357}, "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"]}, "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": 0.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 2.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[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], [2.75, 29.0], [2.65, 28.75], [2.75, 28.5], [2.53, 27.97], [2.18, 27.82], [2.03, 27.47], [1.68, 27.32], [1.53, 26.97], [1.0, 26.75], [0.75, 26.85], [0.5, 26.75], [0.25, 26.85], [0.0, 26.75], [-0.53, 26.97], [-0.68, 27.32], [-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], [-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]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "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": [[[[-0.75, 28.0], [-0.65, 28.25], [-0.75, 28.5], [-0.53, 29.03], [-0.18, 29.18], [-0.03, 29.53], [0.5, 29.75], [0.75, 29.65], [1.0, 29.75], [1.25, 29.65], [1.5, 29.75], [1.75, 29.65], [2.0, 29.75], [2.53, 29.53], [2.75, 29.0], [2.65, 28.75], [2.75, 28.5], [2.53, 27.97], [2.18, 27.82], [2.03, 27.47], [1.68, 27.32], [1.53, 26.97], [1.0, 26.75], [0.75, 26.85], [0.5, 26.75], [0.25, 26.85], [0.0, 26.75], [-0.53, 26.97], [-0.75, 27.5], [-0.65, 27.75], [-0.75, 28.0]]]]}, "2022-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.25, 28.5], [-1.15, 28.75], [-1.25, 29.0], [-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], [2.75, 29.0], [2.65, 28.75], [2.75, 28.5], [2.53, 27.97], [2.18, 27.82], [2.03, 27.47], [1.68, 27.32], [1.53, 26.97], [1.0, 26.75], [0.75, 26.85], [0.5, 26.75], [0.25, 26.85], [0.0, 26.75], [-0.53, 26.97], [-0.68, 27.32], [-1.03, 27.47], [-1.25, 28.0], [-1.15, 28.25], [-1.25, 28.5]]]]}, "2022-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 28.5], [-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], [2.75, 29.0], [2.65, 28.75], [2.75, 28.5], [2.53, 27.97], [2.18, 27.82], [2.03, 27.47], [1.68, 27.32], [1.53, 26.97], [1.0, 26.75], [0.75, 26.85], [0.5, 26.75], [0.25, 26.85], [0.0, 26.75], [-0.53, 26.97], [-0.68, 27.32], [-0.75, 27.35], [-1.0, 27.25], [-1.53, 27.47], [-1.75, 28.0], [-1.65, 28.25], [-1.75, 28.5]]]]}, "2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 28.5], [-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]]]]}, "2022-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 28.5], [-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]]]]}, "2022-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 29.53], [-0.5, 29.75], [0.03, 29.53], [0.25, 29.0], [0.03, 28.47], [-0.5, 28.25], [-1.03, 28.47], [-1.25, 29.0], [-1.03, 29.53]]]]}, "2022-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 29.53], [-0.5, 29.75], [0.03, 29.53], [0.25, 29.0], [0.03, 28.47], [-0.5, 28.25], [-1.03, 28.47], [-1.25, 29.0], [-1.03, 29.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6290779265731885}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7878161272272406}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.603474889120264, 35.05810703542414, 35.00601260221919, 35.39963307477967, 35.904227316440824, NaN, NaN]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.680209277151675, 32.99074966827817, 33.446426995981994, 34.52856967554396, 35.56170783681165, NaN, NaN]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6147637364147123, -2.9470306463088844, -2.9120763994710974, -2.630945048015917, -2.3337447443960855, NaN, NaN]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.094018438805108, -3.6290779265731885, -3.210912139827485, -2.831769879720582, -2.4512450184905106, NaN, NaN]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.618342159866017, -1.8075354463900108, -1.7921342036572667, -1.6076642280846416, -1.5170864968465088, NaN, NaN]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.787692760250358, -2.0460789176064456, -2.02612125686262, -1.8091069964982776, -1.5366425988154255, NaN, NaN]}}