{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:25:37.235584", "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": "2022-Dec-17_to_2022-Dec-19_59.5_54.0"}, "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": 2022120002333}, "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 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 19 2022"}, "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": 53078.442426201116}, "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": 54.0}, "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": 59.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "59.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 57.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 61.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[56.85, 53.75], [56.75, 54.0], [56.97, 54.53], [57.5, 54.75], [57.75, 54.65], [57.82, 54.68], [57.97, 55.03], [58.5, 55.25], [58.75, 55.15], [59.0, 55.25], [59.25, 55.15], [59.32, 55.18], [59.47, 55.53], [60.0, 55.75], [60.53, 55.53], [60.68, 55.18], [61.03, 55.03], [61.18, 54.68], [61.53, 54.53], [61.75, 54.0], [61.65, 53.75], [61.75, 53.5], [61.53, 52.97], [61.18, 52.82], [61.03, 52.47], [60.5, 52.25], [59.97, 52.47], [59.82, 52.82], [59.75, 52.85], [59.5, 52.75], [59.25, 52.85], [59.18, 52.82], [59.03, 52.47], [58.68, 52.32], [58.53, 51.97], [58.0, 51.75], [57.75, 51.85], [57.5, 51.75], [57.25, 51.85], [57.0, 51.75], [56.47, 51.97], [56.25, 52.5], [56.47, 53.03], [56.82, 53.18], [56.85, 53.25], [56.75, 53.5], [56.85, 53.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.85, 53.25], [56.75, 53.5], [56.85, 53.75], [56.75, 54.0], [56.97, 54.53], [57.5, 54.75], [57.75, 54.65], [57.82, 54.68], [57.97, 55.03], [58.5, 55.25], [58.75, 55.15], [59.0, 55.25], [59.25, 55.15], [59.32, 55.18], [59.47, 55.53], [60.0, 55.75], [60.53, 55.53], [60.68, 55.18], [61.03, 55.03], [61.18, 54.68], [61.53, 54.53], [61.75, 54.0], [61.65, 53.75], [61.75, 53.5], [61.53, 52.97], [61.18, 52.82], [61.03, 52.47], [60.5, 52.25], [59.97, 52.47], [59.82, 52.82], [59.75, 52.85], [59.5, 52.75], [59.25, 52.85], [59.18, 52.82], [59.03, 52.47], [58.68, 52.32], [58.53, 51.97], [58.0, 51.75], [57.75, 51.85], [57.5, 51.75], [57.25, 51.85], [57.0, 51.75], [56.47, 51.97], [56.25, 52.5], [56.47, 53.03], [56.82, 53.18], [56.85, 53.25]]]]}, "2022-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.85, 53.25], [56.75, 53.5], [56.85, 53.75], [56.75, 54.0], [56.97, 54.53], [57.5, 54.75], [57.75, 54.65], [57.82, 54.68], [57.97, 55.03], [58.5, 55.25], [58.75, 55.15], [59.0, 55.25], [59.25, 55.15], [59.32, 55.18], [59.47, 55.53], [60.0, 55.75], [60.53, 55.53], [60.68, 55.18], [61.03, 55.03], [61.18, 54.68], [61.53, 54.53], [61.75, 54.0], [61.65, 53.75], [61.75, 53.5], [61.53, 52.97], [61.18, 52.82], [61.03, 52.47], [60.5, 52.25], [59.97, 52.47], [59.82, 52.82], [59.75, 52.85], [59.5, 52.75], [59.25, 52.85], [59.18, 52.82], [59.03, 52.47], [58.68, 52.32], [58.53, 51.97], [58.0, 51.75], [57.75, 51.85], [57.5, 51.75], [57.25, 51.85], [57.0, 51.75], [56.47, 51.97], [56.25, 52.5], [56.47, 53.03], [56.82, 53.18], [56.85, 53.25]]]]}, "2022-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.85, 53.25], [56.75, 53.5], [56.85, 53.75], [56.75, 54.0], [56.97, 54.53], [57.5, 54.75], [57.75, 54.65], [57.82, 54.68], [57.97, 55.03], [58.5, 55.25], [58.75, 55.15], [59.0, 55.25], [59.25, 55.15], [59.32, 55.18], [59.47, 55.53], [60.0, 55.75], [60.53, 55.53], [60.68, 55.18], [61.03, 55.03], [61.18, 54.68], [61.53, 54.53], [61.75, 54.0], [61.65, 53.75], [61.75, 53.5], [61.53, 52.97], [61.18, 52.82], [61.03, 52.47], [60.5, 52.25], [59.97, 52.47], [59.82, 52.82], [59.75, 52.85], [59.5, 52.75], [59.25, 52.85], [59.18, 52.82], [59.03, 52.47], [58.68, 52.32], [58.53, 51.97], [58.0, 51.75], [57.75, 51.85], [57.5, 51.75], [57.25, 51.85], [57.0, 51.75], [56.47, 51.97], [56.25, 52.5], [56.47, 53.03], [56.82, 53.18], [56.85, 53.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.73200732432798}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 10.069405446253912}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.376345091989265, -2.8128335586204685, -2.6160387817291166]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.2507114059760625, -2.1223474605217234, -0.6514649163964918]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.845281353861333, 10.574208583358901, 10.788726401541515]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.787439430606696, 11.523593710986859, 12.73200732432798]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3513964519715984, 1.5700518455466124, 1.5668034697014737]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5597459868744992, 1.7042399554988497, 1.8340532590205374]}}