{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:56.059347", "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-Mar-25_to_2025-Mar-28_74.5_44.0"}, "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": 2025030000663}, "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": "March 25 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 28 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": "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": 57829.047378543706}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 44.0}, "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": 74.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 70.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 76.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[76.5, 44.25], [77.03, 44.03], [77.25, 43.5], [77.03, 42.97], [76.5, 42.75], [76.25, 42.85], [76.0, 42.75], [75.75, 42.85], 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the boundary of the event at each time step", "value": {"2025-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.5, 43.75], [69.97, 43.97], [69.75, 44.5], [69.97, 45.03], [70.5, 45.25], [70.75, 45.15], [71.0, 45.25], [71.25, 45.15], [71.5, 45.25], [71.75, 45.15], [72.0, 45.25], [72.25, 45.15], [72.5, 45.25], [72.75, 45.15], [73.0, 45.25], [73.25, 45.15], [73.5, 45.25], [73.75, 45.15], [74.0, 45.25], [74.25, 45.15], [74.5, 45.25], [75.03, 45.03], [75.18, 44.68], [75.25, 44.65], [75.5, 44.75], [76.03, 44.53], [76.18, 44.18], [76.25, 44.15], [76.5, 44.25], [77.03, 44.03], [77.25, 43.5], [77.03, 42.97], [76.5, 42.75], [76.25, 42.85], [76.0, 42.75], [75.75, 42.85], [75.5, 42.75], [75.25, 42.85], [75.0, 42.75], [74.75, 42.85], [74.5, 42.75], [74.25, 42.85], [74.0, 42.75], [73.75, 42.85], [73.5, 42.75], [73.25, 42.85], [73.0, 42.75], [72.75, 42.85], [72.5, 42.75], [72.25, 42.85], [72.0, 42.75], [71.47, 42.97], [71.25, 43.5], [71.38, 43.8], [71.25, 43.85], [71.0, 43.75], [70.75, 43.85], [70.5, 43.75]]]]}, "2025-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.5, 43.75], [69.97, 43.97], [69.75, 44.5], [69.97, 45.03], [70.5, 45.25], [70.75, 45.15], [71.0, 45.25], [71.25, 45.15], [71.5, 45.25], [71.75, 45.15], [72.0, 45.25], [72.25, 45.15], [72.5, 45.25], [72.75, 45.15], [73.0, 45.25], [73.25, 45.15], [73.5, 45.25], [73.75, 45.15], [74.0, 45.25], [74.25, 45.15], [74.5, 45.25], [75.03, 45.03], [75.18, 44.68], [75.25, 44.65], [75.5, 44.75], [76.03, 44.53], [76.18, 44.18], [76.25, 44.15], [76.5, 44.25], [77.03, 44.03], [77.25, 43.5], [77.03, 42.97], [76.5, 42.75], [76.25, 42.85], [76.0, 42.75], [75.75, 42.85], [75.5, 42.75], [75.25, 42.85], [75.0, 42.75], [74.75, 42.85], [74.5, 42.75], [74.25, 42.85], [74.0, 42.75], [73.75, 42.85], [73.5, 42.75], [73.25, 42.85], [73.0, 42.75], [72.75, 42.85], [72.5, 42.75], [72.25, 42.85], [72.0, 42.75], [71.47, 42.97], [71.25, 43.5], [71.38, 43.8], [71.25, 43.85], [71.0, 43.75], [70.75, 43.85], 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2.456315188937765]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.4771382649739166, -2.1766316731770416, 0.3328173319499115, 1.0569282531738509]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.461082524919863, -7.972700798576478, -7.180727716918513, -6.655949947065084]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.377318698178897, -9.465798263979423, -8.558327141745565, -7.3690816612189]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6062726246630292, -1.7284515023466804, -1.510575319096645, -1.4008766940313089]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.972785387129643, -2.0029888009248293, -1.826113510682545, -1.5030780180567525]}}