{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:45.693028", "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": "2025-Jun-01_to_2025-Jun-06_1.0_19.0"}, "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": 2025060000064}, "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": "June 01 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 06 2025"}, "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": 90523.22065550252}, "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": ["Mali"]}, "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": 19.0}, "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": 361.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 358.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.0, 20.25], [1.53, 20.03], [1.75, 19.5], [1.53, 18.97], [1.0, 18.75], [0.47, 18.97], [0.25, 19.5], [0.47, 20.03], [1.0, 20.25]]]]}, "2025-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.25, 20.0], [-2.03, 20.53], [-1.5, 20.75], [-1.25, 20.65], [-1.18, 20.68], [-1.03, 21.03], [-0.5, 21.25], [-0.25, 21.15], [0.0, 21.25], [0.25, 21.15], [0.5, 21.25], [1.03, 21.03], [1.25, 20.5], [1.15, 20.25], [1.18, 20.18], [1.53, 20.03], [1.75, 19.5], [1.65, 19.25], [1.75, 19.0], [1.65, 18.75], [1.75, 18.5], [1.53, 17.97], [1.18, 17.82], [1.15, 17.75], [1.25, 17.5], [1.03, 16.97], [0.5, 16.75], [-0.03, 16.97], [-0.18, 17.32], [-0.53, 17.47], [-0.68, 17.82], [-0.75, 17.85], [-1.0, 17.75], [-1.53, 17.97], [-1.75, 18.5], [-1.65, 18.75], [-1.75, 19.0], [-1.65, 19.25], [-1.68, 19.32], [-2.03, 19.47], [-2.25, 20.0]]]]}, "2025-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.03, 20.53], [-1.5, 20.75], [-1.25, 20.65], [-1.18, 20.68], [-1.03, 21.03], [-0.5, 21.25], [-0.25, 21.15], [0.0, 21.25], [0.25, 21.15], [0.5, 21.25], [1.03, 21.03], [1.25, 20.5], [1.15, 20.25], [1.18, 20.18], [1.53, 20.03], [1.68, 19.68], [2.03, 19.53], [2.25, 19.0], [2.15, 18.75], [2.25, 18.5], [2.03, 17.97], [1.5, 17.75], [1.25, 17.85], [1.18, 17.82], [1.15, 17.75], [1.25, 17.5], [1.03, 16.97], [0.5, 16.75], [-0.03, 16.97], [-0.18, 17.32], [-0.5, 17.46], [-1.0, 17.25], [-1.25, 17.35], [-1.5, 17.25], [-2.03, 17.47], [-2.25, 18.0], [-2.03, 18.53], [-1.68, 18.68], [-1.65, 18.75], [-1.68, 18.82], [-2.03, 18.97], [-2.25, 19.5], [-2.15, 19.75], [-2.25, 20.0], [-2.03, 20.53]]]]}, "2025-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.03, 20.53], [-1.5, 20.75], [-1.25, 20.65], [-1.18, 20.68], [-1.03, 21.03], [-0.5, 21.25], [-0.25, 21.15], [0.0, 21.25], [0.25, 21.15], [0.5, 21.25], [1.03, 21.03], [1.25, 20.5], [1.15, 20.25], [1.18, 20.18], [1.53, 20.03], [1.68, 19.68], [2.03, 19.53], [2.25, 19.0], [2.15, 18.75], [2.25, 18.5], [2.03, 17.97], [1.5, 17.75], [1.25, 17.85], [1.18, 17.82], [1.15, 17.75], [1.25, 17.5], [1.03, 16.97], [0.5, 16.75], [-0.03, 16.97], [-0.18, 17.32], [-0.5, 17.46], [-1.0, 17.25], [-1.25, 17.35], [-1.5, 17.25], [-2.03, 17.47], [-2.25, 18.0], [-2.03, 18.53], [-1.68, 18.68], [-1.65, 18.75], [-1.68, 18.82], [-2.03, 18.97], [-2.25, 19.5], [-2.15, 19.75], [-2.25, 20.0], [-2.03, 20.53]]]]}, "2025-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.47, 18.53], [-0.25, 18.0], [-0.47, 17.47], [-1.0, 17.25], [-1.25, 17.35], [-1.5, 17.25], [-2.03, 17.47], [-2.25, 18.0], [-2.03, 18.53], [-1.5, 18.75], [-1.25, 18.65], [-1.0, 18.75], [-0.47, 18.53]]], [[[1.0, 19.75], [1.25, 19.65], [1.5, 19.75], [2.03, 19.53], [2.25, 19.0], [2.15, 18.75], [2.25, 18.5], [2.03, 17.97], [1.5, 17.75], [0.97, 17.97], [0.82, 18.32], [0.47, 18.47], [0.25, 19.0], [0.47, 19.53], [1.0, 19.75]]], [[[-1.5, 20.25], [-0.97, 20.03], [-0.75, 19.5], [-0.97, 18.97], [-1.5, 18.75], [-2.03, 18.97], [-2.25, 19.5], [-2.03, 20.03], [-1.5, 20.25]]]]}, "2025-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.47, 18.53], [-0.25, 18.0], [-0.47, 17.47], [-1.0, 17.25], [-1.25, 17.35], [-1.5, 17.25], [-2.03, 17.47], [-2.25, 18.0], [-2.03, 18.53], [-1.5, 18.75], [-1.25, 18.65], [-1.0, 18.75], [-0.47, 18.53]]], [[[1.0, 19.75], [1.25, 19.65], [1.5, 19.75], [2.03, 19.53], [2.25, 19.0], [2.15, 18.75], [2.25, 18.5], [2.03, 17.97], [1.5, 17.75], [0.97, 17.97], [0.82, 18.32], [0.47, 18.47], [0.25, 19.0], [0.47, 19.53], [1.0, 19.75]]], [[[-1.5, 20.25], [-0.97, 20.03], [-0.75, 19.5], [-0.97, 18.97], [-1.5, 18.75], [-2.03, 18.97], [-2.25, 19.5], [-2.03, 20.03], [-1.5, 20.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.003980432894139}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6987077822462626}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.616372680664085, 33.30792251978164, 32.51505231139481, 33.33477525608521, 33.72264633178713, 33.15895275539822]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.616372680664085, 32.51946411132815, 31.722107187906943, 32.57286224365237, 33.19501775105795, 32.65485661824545]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.09134106417099, -2.4357275105848566, -3.2692697204717804, -2.5288590401564943, -1.9635901094266235, -2.604282905243167]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.09134106417099, -3.097515402377212, -4.003980432894139, -3.2002023747606927, -2.265327914520242, -3.198556533537385]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.256170073965431, -1.5637766158086537, -2.188572478680241, -1.763216377339384, -1.402104904437273, -1.8641147817199564]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.256170073965431, -1.8437340688311064, -2.60234757794918, -2.265829854893739, -1.5887847976198146, -2.3036677099551888]}}