{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:45.776486", "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-Dec-25_to_2024-Dec-29_14.0_58.5"}, "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": 2024120002144}, "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": "December 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 124625.22461091778}, "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": ["Norway", "Sweden"]}, "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": ["Baltic 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": 58.5}, "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": 14.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[10.97, 60.03], [11.5, 60.25], [11.75, 60.15], [12.0, 60.25], [12.25, 60.15], [12.5, 60.25], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.5, 60.25], [13.75, 60.15], [14.0, 60.25], [14.25, 60.15], [14.5, 60.25], [14.75, 60.15], [15.0, 60.25], [15.25, 60.15], [15.5, 60.25], [15.75, 60.15], [16.0, 60.25], [16.25, 60.15], [16.5, 60.25], [16.75, 60.15], [17.0, 60.25], [17.25, 60.15], [17.5, 60.25], [17.75, 60.15], [18.0, 60.25], [18.25, 60.15], [18.5, 60.25], [19.03, 60.03], [19.25, 59.5], [19.15, 59.25], [19.18, 59.18], [19.53, 59.03], [19.75, 58.5], [19.53, 57.97], [19.0, 57.75], [18.75, 57.85], [18.5, 57.75], [18.25, 57.85], [18.18, 57.82], [18.15, 57.75], [18.25, 57.5], [18.03, 56.97], [17.5, 56.75], [17.25, 56.85], [17.0, 56.75], [16.75, 56.85], [16.68, 56.82], [16.53, 56.47], [16.0, 56.25], [15.75, 56.35], [15.5, 56.25], [15.25, 56.35], [15.0, 56.25], [14.75, 56.35], [14.5, 56.25], [14.25, 56.35], [14.0, 56.25], [13.75, 56.35], [13.5, 56.25], [13.25, 56.35], [13.0, 56.25], [12.47, 56.47], [12.32, 56.82], [12.25, 56.85], [12.0, 56.75], [11.47, 56.97], [11.25, 57.5], [11.35, 57.75], [11.32, 57.82], [10.97, 57.97], [10.75, 58.5], [10.85, 58.75], [10.75, 59.0], [10.85, 59.25], [10.75, 59.5], [10.97, 60.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 59.0], [10.85, 59.25], [10.75, 59.5], [10.97, 60.03], [11.5, 60.25], [11.75, 60.15], [12.0, 60.25], [12.25, 60.15], [12.5, 60.25], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.5, 60.25], [13.75, 60.15], [14.0, 60.25], [14.25, 60.15], [14.5, 60.25], [14.75, 60.15], [15.0, 60.25], [15.25, 60.15], [15.5, 60.25], [15.75, 60.15], [16.0, 60.25], [16.25, 60.15], [16.5, 60.25], [16.75, 60.15], [17.0, 60.25], [17.25, 60.15], [17.5, 60.25], [17.75, 60.15], [18.0, 60.25], [18.25, 60.15], [18.5, 60.25], [19.03, 60.03], [19.25, 59.5], [19.15, 59.25], [19.18, 59.18], [19.53, 59.03], [19.75, 58.5], [19.53, 57.97], [19.0, 57.75], [18.75, 57.85], [18.5, 57.75], [18.25, 57.85], [18.18, 57.82], [18.15, 57.75], [18.25, 57.5], [18.03, 56.97], [17.5, 56.75], [17.25, 56.85], [17.0, 56.75], [16.75, 56.85], [16.68, 56.82], [16.53, 56.47], [16.0, 56.25], [15.75, 56.35], [15.5, 56.25], [15.25, 56.35], [15.0, 56.25], [14.75, 56.35], [14.5, 56.25], [14.25, 56.35], [14.0, 56.25], [13.75, 56.35], [13.5, 56.25], [13.25, 56.35], [13.0, 56.25], [12.47, 56.47], [12.32, 56.82], [12.25, 56.85], [12.0, 56.75], [11.47, 56.97], [11.25, 57.5], [11.35, 57.75], [11.32, 57.82], [10.97, 57.97], [10.75, 58.5], [10.85, 58.75], [10.75, 59.0]]]]}, "2024-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 59.0], [10.85, 59.25], [10.75, 59.5], [10.97, 60.03], [11.5, 60.25], [11.75, 60.15], [12.0, 60.25], [12.25, 60.15], [12.5, 60.25], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.5, 60.25], [13.75, 60.15], [14.0, 60.25], [14.25, 60.15], [14.5, 60.25], [14.75, 60.15], [15.0, 60.25], [15.25, 60.15], [15.5, 60.25], [15.75, 60.15], [16.0, 60.25], [16.25, 60.15], [16.5, 60.25], [16.75, 60.15], [17.0, 60.25], [17.25, 60.15], [17.5, 60.25], [17.75, 60.15], [18.0, 60.25], [18.25, 60.15], [18.5, 60.25], [19.03, 60.03], [19.25, 59.5], [19.15, 59.25], [19.18, 59.18], [19.53, 59.03], [19.75, 58.5], [19.53, 57.97], [19.0, 57.75], [18.75, 57.85], [18.5, 57.75], [18.25, 57.85], [18.18, 57.82], [18.15, 57.75], [18.25, 57.5], [18.03, 56.97], [17.5, 56.75], [17.25, 56.85], [17.0, 56.75], [16.75, 56.85], [16.68, 56.82], [16.53, 56.47], [16.0, 56.25], [15.75, 56.35], [15.5, 56.25], [15.25, 56.35], [15.0, 56.25], [14.75, 56.35], [14.5, 56.25], [14.25, 56.35], [14.0, 56.25], [13.75, 56.35], [13.5, 56.25], [13.25, 56.35], [13.0, 56.25], [12.47, 56.47], [12.32, 56.82], [12.25, 56.85], [12.0, 56.75], [11.47, 56.97], [11.25, 57.5], [11.35, 57.75], [11.32, 57.82], [10.97, 57.97], [10.75, 58.5], [10.85, 58.75], [10.75, 59.0]]]]}, "2024-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 59.0], [10.85, 59.25], [10.75, 59.5], [10.97, 60.03], [11.5, 60.25], [11.75, 60.15], [12.0, 60.25], [12.25, 60.15], [12.5, 60.25], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.5, 60.25], [13.75, 60.15], [14.0, 60.25], [14.25, 60.15], [14.5, 60.25], [14.75, 60.15], [15.0, 60.25], [15.25, 60.15], [15.5, 60.25], [15.75, 60.15], [16.0, 60.25], [16.25, 60.15], [16.5, 60.25], [16.75, 60.15], [17.0, 60.25], [17.25, 60.15], [17.5, 60.25], [17.75, 60.15], [18.0, 60.25], [18.25, 60.15], [18.5, 60.25], [19.03, 60.03], [19.25, 59.5], [19.15, 59.25], [19.18, 59.18], [19.53, 59.03], [19.75, 58.5], [19.53, 57.97], [19.0, 57.75], [18.75, 57.85], [18.5, 57.75], [18.25, 57.85], [18.18, 57.82], [18.15, 57.75], [18.25, 57.5], [18.03, 56.97], [17.5, 56.75], [17.25, 56.85], [17.0, 56.75], [16.75, 56.85], [16.68, 56.82], [16.53, 56.47], [16.0, 56.25], [15.75, 56.35], [15.5, 56.25], [15.25, 56.35], [15.0, 56.25], [14.75, 56.35], [14.5, 56.25], [14.25, 56.35], [14.0, 56.25], [13.75, 56.35], [13.5, 56.25], [13.25, 56.35], [13.0, 56.25], [12.47, 56.47], [12.32, 56.82], [12.25, 56.85], [12.0, 56.75], [11.47, 56.97], [11.25, 57.5], [11.35, 57.75], [11.32, 57.82], [10.97, 57.97], [10.75, 58.5], [10.85, 58.75], [10.75, 59.0]]]]}, "2024-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 59.5], [10.97, 60.03], [11.5, 60.25], [11.75, 60.15], [12.0, 60.25], [12.25, 60.15], [12.5, 60.25], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.5, 60.25], [13.75, 60.15], [14.0, 60.25], [14.25, 60.15], [14.5, 60.25], [14.75, 60.15], [15.0, 60.25], [15.25, 60.15], [15.5, 60.25], [15.75, 60.15], [16.0, 60.25], [16.25, 60.15], [16.5, 60.25], [16.75, 60.15], [17.0, 60.25], [17.25, 60.15], [17.5, 60.25], [17.75, 60.15], [18.0, 60.25], [18.25, 60.15], [18.5, 60.25], [19.03, 60.03], [19.25, 59.5], [19.03, 58.97], [18.68, 58.82], [18.53, 58.47], [18.0, 58.25], [17.75, 58.35], [17.5, 58.25], [17.25, 58.35], [17.18, 58.32], [17.03, 57.97], [16.5, 57.75], [16.25, 57.85], [16.0, 57.75], [15.47, 57.97], [15.32, 58.32], [15.25, 58.35], [15.0, 58.25], [14.75, 58.35], [14.68, 58.32], [14.53, 57.97], [14.0, 57.75], [13.5, 57.96], [13.0, 57.75], [12.75, 57.85], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.47, 57.97], [11.32, 58.32], [10.97, 58.47], [10.75, 59.0], [10.85, 59.25], [10.75, 59.5]]]]}, "2024-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 59.5], [10.97, 60.03], [11.5, 60.25], [11.75, 60.15], [12.0, 60.25], [12.25, 60.15], [12.5, 60.25], [12.75, 60.15], [13.0, 60.25], [13.25, 60.15], [13.5, 60.25], [13.75, 60.15], [14.0, 60.25], [14.25, 60.15], [14.5, 60.25], [14.75, 60.15], [15.0, 60.25], [15.25, 60.15], [15.5, 60.25], [15.75, 60.15], [16.0, 60.25], [16.25, 60.15], [16.5, 60.25], [16.75, 60.15], [17.0, 60.25], [17.25, 60.15], [17.5, 60.25], [17.75, 60.15], [18.0, 60.25], [18.25, 60.15], [18.5, 60.25], [19.03, 60.03], [19.25, 59.5], [19.03, 58.97], [18.68, 58.82], [18.53, 58.47], [18.0, 58.25], [17.75, 58.35], [17.5, 58.25], [17.25, 58.35], [17.18, 58.32], [17.03, 57.97], [16.5, 57.75], [16.25, 57.85], [16.0, 57.75], [15.47, 57.97], [15.32, 58.32], [15.25, 58.35], [15.0, 58.25], [14.75, 58.35], [14.68, 58.32], [14.53, 57.97], [14.0, 57.75], [13.5, 57.96], [13.0, 57.75], [12.75, 57.85], [12.5, 57.75], [12.25, 57.85], [12.0, 57.75], [11.47, 57.97], [11.32, 58.32], [10.97, 58.47], [10.75, 59.0], [10.85, 59.25], [10.75, 59.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.074275704013473}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.003908567255124}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.471648136155409, 7.140130962025069, 5.3456272009647705, 4.984903680710545, 6.6387850443522325]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.134239451090536, 8.34428431193038, 6.73255310058596, 5.578281656901083, 7.341324106852255]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.034037645347047, 7.737961553472732, 6.0554652703472325, 6.397535174009733, 8.015656672216958]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.567734575292661, 10.074275704013473, 7.6122744435627965, 7.764411097185416, 9.274479062505975]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4979232199646142, 1.7026770123616886, 1.3190363147094113, 1.2668727191326716, 1.6365968064839829]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7367823893138945, 1.9392336329793025, 1.557284523381021, 1.3814242920421376, 1.7364274861674527]}}