{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:11.590814", "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-06_to_2025-Jan-09_121.0_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": 2025010001345}, "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 06 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 66427.5593796839}, "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": 121.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[119.32, 54.68], [119.47, 55.03], [119.82, 55.18], [119.88, 55.3], [119.47, 55.47], [119.25, 56.0], [119.47, 56.53], [120.0, 56.75], [120.25, 56.65], [120.5, 56.75], [120.75, 56.65], [121.0, 56.75], [121.25, 56.65], [121.5, 56.75], [121.75, 56.65], [122.0, 56.75], [122.25, 56.65], [122.5, 56.75], [122.75, 56.65], [123.0, 56.75], [123.53, 56.53], [123.75, 56.0], [123.65, 55.75], [123.75, 55.5], [123.53, 54.97], [123.0, 54.75], [123.25, 54.65], [123.5, 54.75], [123.75, 54.65], [124.0, 54.75], [124.53, 54.53], [124.75, 54.0], [124.53, 53.47], [124.18, 53.32], [124.03, 52.97], [123.5, 52.75], [123.25, 52.85], [123.0, 52.75], [122.75, 52.85], [122.5, 52.75], [122.25, 52.85], [122.0, 52.75], [121.75, 52.85], [121.5, 52.75], [121.25, 52.85], [121.0, 52.75], [120.75, 52.85], [120.5, 52.75], [120.25, 52.85], [120.0, 52.75], [119.75, 52.85], [119.5, 52.75], [119.25, 52.85], [119.0, 52.75], [118.75, 52.85], [118.5, 52.75], [117.97, 52.97], [117.75, 53.5], [117.97, 54.03], [118.32, 54.18], [118.47, 54.53], [119.0, 54.75], [119.25, 54.65], [119.32, 54.68]], [[122.75, 54.85], [122.5, 54.75], [122.75, 54.65], [123.0, 54.75], [122.75, 54.85]], [[122.25, 54.85], [122.18, 54.82], [122.13, 54.7], [122.25, 54.65], [122.5, 54.75], [122.25, 54.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.47, 54.53], [119.0, 54.75], [119.25, 54.65], [119.32, 54.68], [119.47, 55.03], [119.82, 55.18], [119.88, 55.3], [119.47, 55.47], [119.25, 56.0], [119.47, 56.53], [120.0, 56.75], [120.25, 56.65], [120.5, 56.75], [120.75, 56.65], [121.0, 56.75], [121.25, 56.65], [121.5, 56.75], [121.75, 56.65], [122.0, 56.75], [122.25, 56.65], [122.5, 56.75], [122.75, 56.65], [123.0, 56.75], [123.53, 56.53], [123.75, 56.0], [123.65, 55.75], [123.75, 55.5], [123.53, 54.97], [123.0, 54.75], [123.25, 54.65], [123.5, 54.75], [123.75, 54.65], [124.0, 54.75], [124.53, 54.53], [124.75, 54.0], [124.53, 53.47], [124.18, 53.32], [124.03, 52.97], [123.5, 52.75], [123.25, 52.85], [123.0, 52.75], [122.75, 52.85], [122.5, 52.75], [122.25, 52.85], [122.0, 52.75], [121.75, 52.85], [121.5, 52.75], [121.25, 52.85], [121.0, 52.75], [120.75, 52.85], [120.5, 52.75], [120.25, 52.85], [120.0, 52.75], [119.75, 52.85], [119.5, 52.75], [119.25, 52.85], [119.0, 52.75], [118.75, 52.85], [118.5, 52.75], [117.97, 52.97], [117.75, 53.5], [117.97, 54.03], [118.32, 54.18], [118.47, 54.53]], [[122.75, 54.85], [122.5, 54.75], [122.75, 54.65], [123.0, 54.75], [122.75, 54.85]], [[122.25, 54.85], [122.18, 54.82], [122.13, 54.7], [122.25, 54.65], [122.5, 54.75], [122.25, 54.85]]]]}, "2025-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.47, 54.53], [119.0, 54.75], [119.25, 54.65], [119.32, 54.68], [119.47, 55.03], [119.82, 55.18], [119.88, 55.3], [119.47, 55.47], [119.25, 56.0], [119.47, 56.53], [120.0, 56.75], [120.25, 56.65], [120.5, 56.75], [120.75, 56.65], [121.0, 56.75], [121.25, 56.65], [121.5, 56.75], [121.75, 56.65], [122.0, 56.75], [122.25, 56.65], [122.5, 56.75], [122.75, 56.65], [123.0, 56.75], [123.53, 56.53], [123.75, 56.0], [123.65, 55.75], [123.75, 55.5], [123.53, 54.97], [123.0, 54.75], [123.25, 54.65], [123.5, 54.75], [123.75, 54.65], [124.0, 54.75], [124.53, 54.53], [124.75, 54.0], [124.53, 53.47], [124.18, 53.32], [124.03, 52.97], [123.5, 52.75], [123.25, 52.85], [123.0, 52.75], [122.75, 52.85], [122.5, 52.75], [122.25, 52.85], [122.0, 52.75], [121.75, 52.85], [121.5, 52.75], [121.25, 52.85], [121.0, 52.75], [120.75, 52.85], [120.5, 52.75], [120.25, 52.85], [120.0, 52.75], [119.75, 52.85], [119.5, 52.75], [119.25, 52.85], [119.0, 52.75], [118.75, 52.85], [118.5, 52.75], [117.97, 52.97], [117.75, 53.5], [117.97, 54.03], [118.32, 54.18], [118.47, 54.53]], [[122.75, 54.85], [122.5, 54.75], [122.75, 54.65], [123.0, 54.75], [122.75, 54.85]], [[122.25, 54.85], [122.18, 54.82], [122.13, 54.7], [122.25, 54.65], [122.5, 54.75], [122.25, 54.85]]]]}, "2025-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.47, 54.53], [119.0, 54.75], [119.25, 54.65], [119.32, 54.68], [119.47, 55.03], [119.82, 55.18], [119.88, 55.3], [119.47, 55.47], [119.25, 56.0], [119.47, 56.53], [120.0, 56.75], [120.25, 56.65], [120.5, 56.75], [120.75, 56.65], [121.0, 56.75], [121.25, 56.65], [121.5, 56.75], [121.75, 56.65], [122.0, 56.75], [122.25, 56.65], [122.5, 56.75], [122.75, 56.65], [123.0, 56.75], [123.53, 56.53], [123.75, 56.0], [123.65, 55.75], [123.75, 55.5], [123.53, 54.97], [123.0, 54.75], [123.25, 54.65], [123.5, 54.75], [123.75, 54.65], [124.0, 54.75], [124.53, 54.53], [124.75, 54.0], [124.53, 53.47], [124.18, 53.32], [124.03, 52.97], [123.5, 52.75], [123.25, 52.85], [123.0, 52.75], [122.75, 52.85], [122.5, 52.75], [122.25, 52.85], [122.0, 52.75], [121.75, 52.85], [121.5, 52.75], [121.25, 52.85], [121.0, 52.75], [120.75, 52.85], [120.5, 52.75], [120.25, 52.85], [120.0, 52.75], [119.75, 52.85], [119.5, 52.75], [119.25, 52.85], [119.0, 52.75], [118.75, 52.85], [118.5, 52.75], [117.97, 52.97], [117.75, 53.5], [117.97, 54.03], [118.32, 54.18], [118.47, 54.53]], [[122.75, 54.85], [122.5, 54.75], [122.75, 54.65], [123.0, 54.75], [122.75, 54.85]], [[122.25, 54.85], [122.18, 54.82], [122.13, 54.7], [122.25, 54.65], [122.5, 54.75], [122.25, 54.85]]]]}, "2025-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.5, 53.25], [119.97, 53.47], [119.75, 54.0], [119.97, 54.53], [120.5, 54.75], [120.75, 54.65], [121.0, 54.75], [121.25, 54.65], [121.5, 54.75], [122.03, 54.53], [122.25, 54.0], [122.03, 53.47], [121.5, 53.25], [121.25, 53.35], [121.0, 53.25], [120.75, 53.35], [120.5, 53.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.785063669215987}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.325642656861497}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-19.305084850551793, -18.751439553338145, -19.985133561142874, -19.922854699028875]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-17.55651766459144, -16.85657475789384, -16.633135859171546, -19.66837857564289]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.342462952296927, 10.025884661607746, 8.79010338085493, 7.086858692035103]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.576154907586954, 12.785063669215987, 10.907744057800215, 7.328248120762851]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.855110624760776, 1.889269109075512, 1.6093878202110679, 1.4694992962443527]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2817279552933494, 2.4818968180814727, 1.920197993507684, 1.5325780404458196]}}