{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:16.436502", "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-Jan-23_to_2024-Jan-25_27.0_57.5"}, "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": 2024010001888}, "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 23 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2024"}, "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": 82795.86219828833}, "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": ["Belarus", "Latvia", "Lithuania", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "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": []}, "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": 57.5}, "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": 27.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[24.25, 55.0], [24.47, 55.53], [24.82, 55.68], [24.96, 56.0], [24.75, 56.5], [24.85, 56.75], [24.75, 57.0], [24.97, 57.53], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [27.0, 58.25], [27.25, 58.15], [27.5, 58.25], [27.8, 58.13], [27.97, 58.53], [28.5, 58.75], [29.03, 58.53], [29.18, 58.18], [29.25, 58.15], [29.5, 58.25], [30.03, 58.03], [30.18, 57.68], [30.53, 57.53], [30.75, 57.0], [30.53, 56.47], [30.0, 56.25], [29.75, 56.35], [29.68, 56.32], [29.53, 55.97], [29.0, 55.75], [28.75, 55.85], [28.68, 55.82], [28.53, 55.47], [28.18, 55.32], [28.03, 54.97], [27.68, 54.82], [27.53, 54.47], [27.18, 54.32], [27.15, 54.25], [27.25, 54.0], [27.03, 53.47], [26.5, 53.25], [26.25, 53.35], [26.0, 53.25], [25.75, 53.35], [25.5, 53.25], [25.25, 53.35], [25.0, 53.25], [24.47, 53.47], [24.25, 54.0], [24.35, 54.25], [24.25, 54.5], [24.35, 54.75], [24.25, 55.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.25, 54.5], [24.35, 54.75], [24.25, 55.0], [24.47, 55.53], [24.82, 55.68], [24.96, 56.0], [24.75, 56.5], [24.85, 56.75], [24.75, 57.0], [24.97, 57.53], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [27.0, 58.25], [27.25, 58.15], [27.5, 58.25], [27.8, 58.13], [27.97, 58.53], [28.5, 58.75], [29.03, 58.53], [29.18, 58.18], [29.25, 58.15], [29.5, 58.25], [30.03, 58.03], [30.18, 57.68], [30.53, 57.53], [30.75, 57.0], [30.53, 56.47], [30.0, 56.25], [29.75, 56.35], [29.68, 56.32], [29.53, 55.97], [29.0, 55.75], [28.75, 55.85], [28.68, 55.82], [28.53, 55.47], [28.18, 55.32], [28.03, 54.97], [27.68, 54.82], [27.53, 54.47], [27.18, 54.32], [27.15, 54.25], [27.25, 54.0], [27.03, 53.47], [26.5, 53.25], [26.25, 53.35], [26.0, 53.25], [25.75, 53.35], [25.5, 53.25], [25.25, 53.35], [25.0, 53.25], [24.47, 53.47], [24.25, 54.0], [24.35, 54.25], [24.25, 54.5]]]]}, "2024-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.25, 54.5], [24.35, 54.75], [24.25, 55.0], [24.47, 55.53], [24.82, 55.68], [24.96, 56.0], [24.75, 56.5], [24.85, 56.75], [24.75, 57.0], [24.97, 57.53], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [27.0, 58.25], [27.25, 58.15], [27.5, 58.25], [27.8, 58.13], [27.97, 58.53], [28.5, 58.75], [29.03, 58.53], [29.18, 58.18], [29.25, 58.15], [29.5, 58.25], [30.03, 58.03], [30.18, 57.68], [30.53, 57.53], [30.75, 57.0], [30.53, 56.47], [30.0, 56.25], [29.75, 56.35], [29.68, 56.32], [29.53, 55.97], [29.0, 55.75], [28.75, 55.85], [28.68, 55.82], [28.53, 55.47], [28.18, 55.32], [28.03, 54.97], [27.68, 54.82], [27.53, 54.47], [27.18, 54.32], [27.15, 54.25], [27.25, 54.0], [27.03, 53.47], [26.5, 53.25], [26.25, 53.35], [26.0, 53.25], [25.75, 53.35], [25.5, 53.25], [25.25, 53.35], [25.0, 53.25], [24.47, 53.47], [24.25, 54.0], [24.35, 54.25], [24.25, 54.5]]]]}, "2024-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.25, 54.5], [24.35, 54.75], [24.25, 55.0], [24.47, 55.53], [24.82, 55.68], [24.96, 56.0], [24.75, 56.5], [24.85, 56.75], [24.75, 57.0], [24.97, 57.53], [25.5, 57.75], [25.75, 57.65], [25.82, 57.68], [25.97, 58.03], [26.5, 58.25], [26.75, 58.15], [27.0, 58.25], [27.25, 58.15], [27.5, 58.25], [27.8, 58.13], [27.97, 58.53], [28.5, 58.75], [29.03, 58.53], [29.18, 58.18], [29.25, 58.15], [29.5, 58.25], [30.03, 58.03], [30.18, 57.68], [30.53, 57.53], [30.75, 57.0], [30.53, 56.47], [30.0, 56.25], [29.75, 56.35], [29.68, 56.32], [29.53, 55.97], [29.0, 55.75], [28.75, 55.85], [28.68, 55.82], [28.53, 55.47], [28.18, 55.32], [28.03, 54.97], [27.68, 54.82], [27.53, 54.47], [27.18, 54.32], [27.15, 54.25], [27.25, 54.0], [27.03, 53.47], [26.5, 53.25], [26.25, 53.35], [26.0, 53.25], [25.75, 53.35], [25.5, 53.25], [25.25, 53.35], [25.0, 53.25], [24.47, 53.47], [24.25, 54.0], [24.35, 54.25], [24.25, 54.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.057893229233343}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.11367174260576}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.7895404302724387, 1.7307425831998557, 1.408518339279965]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.626268803434641, 2.2794603006752823, 1.862367445635357]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.323975790091519, 7.223395946275865, 6.793643491449893]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.057893229233343, 8.018043355612349, 7.560014721066182]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1234579088697918, 1.111331084162746, 1.0744367027667698]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2583401611567393, 1.1704565284443758, 1.1694603592180683]}}