{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:01.679839", "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-Jun-11_to_2025-Jun-14_87.0_49.0"}, "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": 2025060001936}, "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": "June 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 14 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": 50471.15023663797}, "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": ["China", "Kazakhstan", "Mongolia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": 49.0}, "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": 87.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "87.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 89.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[87.75, 49.65], [88.0, 49.75], [88.53, 49.53], [88.68, 49.18], [88.75, 49.15], [89.0, 49.25], [89.53, 49.03], [89.75, 48.5], 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boundary of the event at each time step", "value": {"2025-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.0, 49.75], [87.25, 49.65], [87.5, 49.75], [88.03, 49.53], [88.18, 49.18], [88.53, 49.03], [88.75, 48.5], [88.53, 47.97], [88.0, 47.75], [87.47, 47.97], [87.32, 48.32], [87.25, 48.35], [87.0, 48.25], [86.47, 48.47], [86.25, 49.0], [86.47, 49.53], [87.0, 49.75]]], [[[85.5, 48.25], [84.97, 48.47], [84.75, 49.0], [84.97, 49.53], [85.5, 49.75], [86.03, 49.53], [86.25, 49.0], [86.03, 48.47], [85.5, 48.25]]]]}, "2025-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.5, 49.25], [82.97, 49.47], [82.75, 50.0], [82.97, 50.53], [83.5, 50.75], [83.75, 50.65], [84.0, 50.75], [84.25, 50.65], [84.32, 50.68], [84.47, 51.03], [85.0, 51.25], [85.53, 51.03], [85.75, 50.5], [85.65, 50.25], [85.68, 50.18], [85.75, 50.15], [86.0, 50.25], [86.25, 50.15], [86.32, 50.18], [86.47, 50.53], [87.0, 50.75], [87.53, 50.53], [87.75, 50.0], [87.65, 49.75], [87.68, 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15.698558909098324]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.353955841064476, 19.232904052734398, 21.239910380045615, 20.310381825764978]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.218901282675503, 4.572965575567118, 6.763333363435863, 5.630342066366629]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.859289139349926, 5.334464917146306, 8.203561069843431, 7.008400653273441]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5033598083745996, 1.5422690239229382, 2.2593012069148717, 1.8098036101527484]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6544424587610962, 1.8298778768773454, 2.7684320512103278, 2.2627920585250436]}}