{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:13.098439", "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-10_to_2025-Jan-12_89.0_50.5"}, "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": 2025010001557}, "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 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 12 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": 105375.38744200622}, "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": ["Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 50.5}, "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": 89.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "89.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 84.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[83.75, 52.5], [83.97, 53.03], [84.5, 53.25], [84.75, 53.15], [85.0, 53.25], [85.25, 53.15], [85.32, 53.18], [85.47, 53.53], 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"description": "List of all IPCC regions affected", "value": ["W.Siberia", "E.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 52.0], [83.85, 52.25], [83.75, 52.5], [83.97, 53.03], [84.5, 53.25], [84.75, 53.15], [85.0, 53.25], [85.25, 53.15], [85.32, 53.18], [85.47, 53.53], [86.0, 53.75], [86.25, 53.65], [86.5, 53.75], [86.75, 53.65], [87.0, 53.75], [87.25, 53.65], [87.5, 53.75], [87.75, 53.65], [88.0, 53.75], [88.25, 53.65], [88.5, 53.75], [89.03, 53.53], [89.18, 53.18], [89.25, 53.15], [89.5, 53.25], [89.75, 53.15], [90.0, 53.25], [90.25, 53.15], [90.5, 53.25], [90.75, 53.15], [91.0, 53.25], [91.53, 53.03], [91.75, 52.5], [91.53, 51.97], [91.18, 51.82], [91.04, 51.5], [91.25, 51.0], [91.03, 50.47], [90.5, 50.25], [90.25, 50.35], [90.18, 50.32], [90.03, 49.97], [89.68, 49.82], [89.53, 49.47], [89.0, 49.25], [88.75, 49.35], [88.5, 49.25], [88.0, 49.46], [87.5, 49.25], [87.25, 49.35], [87.0, 49.25], [86.75, 49.35], [86.5, 49.25], [85.97, 49.47], [85.75, 50.0], [85.96, 50.5], [85.75, 51.0], [85.96, 51.5], [85.82, 51.82], [85.75, 51.85], [85.68, 51.82], [85.53, 51.47], [85.18, 51.32], [85.03, 50.97], [84.5, 50.75], [83.97, 50.97], [83.75, 51.5], [83.85, 51.75], [83.75, 52.0]]]]}, "2025-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 52.0], [83.85, 52.25], [83.75, 52.5], [83.97, 53.03], [84.5, 53.25], [84.75, 53.15], [85.0, 53.25], [85.25, 53.15], [85.32, 53.18], [85.47, 53.53], [86.0, 53.75], [86.25, 53.65], [86.5, 53.75], [86.75, 53.65], [87.0, 53.75], [87.25, 53.65], [87.5, 53.75], [87.75, 53.65], [88.0, 53.75], [88.25, 53.65], [88.5, 53.75], [89.03, 53.53], [89.18, 53.18], [89.25, 53.15], [89.5, 53.25], [89.75, 53.15], [90.0, 53.25], [90.25, 53.15], [90.5, 53.25], [90.75, 53.15], [91.0, 53.25], [91.53, 53.03], [91.75, 52.5], [91.53, 51.97], [91.18, 51.82], 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"Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-10.658768347537887, -9.441425323486271, -11.012829289291801]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.9940183003743073, -3.3800809224446198, -5.228202565511026]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.415205655567561, 9.390794836626597, 7.737377878522061]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [13.02697879377422, 11.719601936070887, 9.603468291022807]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4587509218555286, 1.7305059852465419, 1.4639146017965743]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7278432720452204, 2.2453834873548577, 2.1606207567768148]}}