{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:23.636420", "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-Apr-24_to_2024-Apr-26_82.0_49.5"}, "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": 2024040000528}, "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": "April 24 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 77444.09501751939}, "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": ["Kazakhstan", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 49.5}, "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": 82.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "82.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 77.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 83.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[76.75, 50.5], [76.97, 51.03], [77.32, 51.18], [77.47, 51.53], [78.0, 51.75], [78.53, 51.53], [78.68, 51.18], [78.75, 51.15], [78.82, 51.18], [78.97, 51.53], [79.5, 51.75], [79.75, 51.65], [80.0, 51.75], [80.25, 51.65], [80.5, 51.75], [80.75, 51.65], [81.0, 51.75], [81.53, 51.53], [81.68, 51.18], [82.03, 51.03], [82.18, 50.68], [82.5, 50.54], [83.0, 50.75], [83.53, 50.53], [83.75, 50.0], [83.54, 49.5], [83.75, 49.0], [83.53, 48.47], [83.0, 48.25], [82.75, 48.35], [82.5, 48.25], [81.97, 48.47], [81.82, 48.82], [81.75, 48.85], [81.5, 48.75], [81.25, 48.85], [81.18, 48.82], [81.03, 48.47], [80.5, 48.25], [79.97, 48.47], [79.82, 48.82], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [78.25, 48.85], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.85, 49.75], [76.75, 50.0], [76.85, 50.25], [76.75, 50.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.75, 50.0], [76.85, 50.25], [76.75, 50.5], [76.97, 51.03], [77.32, 51.18], [77.47, 51.53], [78.0, 51.75], [78.53, 51.53], [78.68, 51.18], [78.75, 51.15], [78.82, 51.18], [78.97, 51.53], [79.5, 51.75], [79.75, 51.65], [80.0, 51.75], [80.25, 51.65], [80.5, 51.75], [80.75, 51.65], [81.0, 51.75], [81.53, 51.53], [81.68, 51.18], [82.03, 51.03], [82.18, 50.68], [82.5, 50.54], [83.0, 50.75], [83.53, 50.53], [83.75, 50.0], [83.54, 49.5], [83.75, 49.0], [83.53, 48.47], [83.0, 48.25], [82.75, 48.35], [82.5, 48.25], [81.97, 48.47], [81.82, 48.82], [81.75, 48.85], [81.5, 48.75], [81.25, 48.85], [81.18, 48.82], [81.03, 48.47], [80.5, 48.25], [79.97, 48.47], [79.82, 48.82], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [78.25, 48.85], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.85, 49.75], [76.75, 50.0]]]]}, "2024-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.75, 50.0], [76.85, 50.25], [76.75, 50.5], [76.97, 51.03], [77.32, 51.18], [77.47, 51.53], [78.0, 51.75], [78.53, 51.53], [78.68, 51.18], [78.75, 51.15], [78.82, 51.18], [78.97, 51.53], [79.5, 51.75], [79.75, 51.65], [80.0, 51.75], [80.25, 51.65], [80.5, 51.75], [80.75, 51.65], [81.0, 51.75], [81.53, 51.53], [81.68, 51.18], [82.03, 51.03], [82.18, 50.68], [82.5, 50.54], [83.0, 50.75], [83.53, 50.53], [83.75, 50.0], [83.54, 49.5], [83.75, 49.0], [83.53, 48.47], [83.0, 48.25], [82.75, 48.35], [82.5, 48.25], [81.97, 48.47], [81.82, 48.82], [81.75, 48.85], [81.5, 48.75], [81.25, 48.85], [81.18, 48.82], [81.03, 48.47], [80.5, 48.25], [79.97, 48.47], [79.82, 48.82], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [78.25, 48.85], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.85, 49.75], [76.75, 50.0]]]]}, "2024-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.75, 50.0], [76.85, 50.25], [76.75, 50.5], [76.97, 51.03], [77.32, 51.18], [77.47, 51.53], [78.0, 51.75], [78.53, 51.53], [78.68, 51.18], [78.75, 51.15], [78.82, 51.18], [78.97, 51.53], [79.5, 51.75], [79.75, 51.65], [80.0, 51.75], [80.25, 51.65], [80.5, 51.75], [80.75, 51.65], [81.0, 51.75], [81.53, 51.53], [81.68, 51.18], [82.03, 51.03], [82.18, 50.68], [82.5, 50.54], [83.0, 50.75], [83.53, 50.53], [83.75, 50.0], [83.54, 49.5], [83.75, 49.0], [83.53, 48.47], [83.0, 48.25], [82.75, 48.35], [82.5, 48.25], [81.97, 48.47], [81.82, 48.82], [81.75, 48.85], [81.5, 48.75], [81.25, 48.85], [81.18, 48.82], [81.03, 48.47], [80.5, 48.25], [79.97, 48.47], [79.82, 48.82], [79.75, 48.85], [79.5, 48.75], [79.25, 48.85], [79.0, 48.75], [78.75, 48.85], [78.5, 48.75], [78.25, 48.85], [78.0, 48.75], [77.75, 48.85], [77.5, 48.75], [76.97, 48.97], [76.75, 49.5], [76.85, 49.75], [76.75, 50.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.893439853215455}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.170288309382456}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.605979948680158, 2.646438579457481, 4.516039015735771]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.5801965603803296, 0.20603154046676764, 2.4558155233456205]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.270803451595843, -8.04845804038788, -6.19160343616365]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.893439853215455, -8.726502627763068, -7.638865534832689]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.565956034550475, -1.7886667383600667, -1.447372056490815]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.866987613101094, -1.9325087169536974, -1.8059627244385041]}}