{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:15.937322", "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-Jan-18_to_2025-Jan-20_19.5_40.0"}, "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": 2025010001930}, "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": "January 18 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2025"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 60499.09001793308}, "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": ["Albania", "Greece"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe"]}, "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": ["Adriatic Sea", "Ionian Sea"]}, "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": 40.0}, "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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 15.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[14.97, 43.53], [15.5, 43.75], [15.75, 43.65], [16.0, 43.75], [16.53, 43.53], [16.75, 43.0], [16.65, 42.75], [16.68, 42.68], 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at each time step", "value": {"2025-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, 42.47], [14.75, 43.0], [14.97, 43.53], [15.5, 43.75], [15.75, 43.65], [16.0, 43.75], [16.53, 43.53], [16.75, 43.0], [16.65, 42.75], [16.68, 42.68], [16.75, 42.65], [16.82, 42.68], [16.97, 43.03], [17.5, 43.25], [17.75, 43.15], [18.0, 43.25], [18.53, 43.03], [18.68, 42.68], [19.03, 42.53], [19.18, 42.18], [19.53, 42.03], [19.75, 41.5], [19.54, 41.0], [19.68, 40.68], [19.75, 40.65], [20.0, 40.75], [20.53, 40.53], [20.75, 40.0], [20.53, 39.47], [20.18, 39.32], [20.15, 39.25], [20.25, 39.0], [20.03, 38.47], [19.5, 38.25], [19.25, 38.35], [19.0, 38.25], [18.47, 38.47], [18.32, 38.82], [17.97, 38.97], [17.75, 39.5], [17.97, 40.03], [18.32, 40.18], [18.35, 40.25], [18.32, 40.32], [18.25, 40.35], [18.0, 40.25], [17.47, 40.47], [17.32, 40.82], [17.25, 40.85], [17.0, 40.75], [16.47, 40.97], [16.32, 41.32], [15.97, 41.47], [15.82, 41.82], [15.47, 41.97], [15.32, 42.32], [14.97, 42.47]]]]}, "2025-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, 42.47], [14.75, 43.0], [14.97, 43.53], [15.5, 43.75], [15.75, 43.65], [16.0, 43.75], [16.53, 43.53], [16.75, 43.0], [16.65, 42.75], [16.68, 42.68], [16.75, 42.65], [16.82, 42.68], [16.97, 43.03], [17.5, 43.25], [17.75, 43.15], [18.0, 43.25], [18.53, 43.03], [18.68, 42.68], [19.03, 42.53], [19.18, 42.18], [19.53, 42.03], [19.75, 41.5], [19.54, 41.0], [19.68, 40.68], [19.75, 40.65], [20.0, 40.75], [20.53, 40.53], [20.75, 40.0], [20.53, 39.47], [20.18, 39.32], [20.15, 39.25], [20.25, 39.0], [20.03, 38.47], [19.5, 38.25], [19.25, 38.35], [19.0, 38.25], [18.47, 38.47], [18.32, 38.82], [17.97, 38.97], [17.75, 39.5], [17.97, 40.03], [18.32, 40.18], [18.35, 40.25], [18.32, 40.32], [18.25, 40.35], [18.0, 40.25], [17.47, 40.47], [17.32, 40.82], [17.25, 40.85], [17.0, 40.75], [16.47, 40.97], [16.32, 41.32], [15.97, 41.47], [15.82, 41.82], [15.47, 41.97], [15.32, 42.32], [14.97, 42.47]]]]}, 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"Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8242745326129466}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.920833085453844}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.260406455015527, 14.553288053854942, 14.238691926613853]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.725801086425804, 15.890342966715536, 15.394719696044945]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.8161680665727737, 3.1243701075625596, 2.8219610822261987]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.754964720562498, 3.8242745326129466, 3.5864838161975285]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.506571062261967, 1.6650198445891382, 1.4552797818584884]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.858574517345565, 1.9806284346292866, 1.8196854242085845]}}