{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:09.726963", "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-Jun-03_to_2024-Jun-05_111.0_25.5"}, "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": 2024060000178}, "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 03 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 05 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": 58406.417807432175}, "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"]}, "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": 25.5}, "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": 111.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "111.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 108.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[107.97, 26.03], [108.5, 26.25], [108.75, 26.15], [109.0, 26.25], [109.3, 26.13], [109.47, 26.53], [109.82, 26.68], [109.85, 26.75], [109.75, 27.0], [109.85, 27.25], [109.75, 27.5], [109.97, 28.03], [110.5, 28.25], [110.75, 28.15], [111.0, 28.25], [111.53, 28.03], [111.75, 27.5], [111.65, 27.25], [111.68, 27.18], [112.03, 27.03], [112.25, 26.5], [112.15, 26.25], [112.25, 26.0], [112.03, 25.47], [111.68, 25.32], [111.53, 24.97], [111.0, 24.75], [110.75, 24.85], [110.68, 24.82], [110.65, 24.75], [110.75, 24.5], [110.53, 23.97], [110.0, 23.75], [109.75, 23.85], [109.5, 23.75], [109.25, 23.85], [109.0, 23.75], [108.47, 23.97], [108.25, 24.5], [108.35, 24.75], [108.32, 24.82], [107.97, 24.97], [107.75, 25.5], [107.97, 26.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.97, 24.97], [107.75, 25.5], [107.97, 26.03], [108.5, 26.25], [108.75, 26.15], [109.0, 26.25], [109.3, 26.13], [109.47, 26.53], [109.82, 26.68], [109.85, 26.75], [109.75, 27.0], [109.85, 27.25], [109.75, 27.5], [109.97, 28.03], [110.5, 28.25], [110.75, 28.15], [111.0, 28.25], [111.53, 28.03], [111.75, 27.5], [111.65, 27.25], [111.68, 27.18], [112.03, 27.03], [112.25, 26.5], [112.15, 26.25], [112.25, 26.0], [112.03, 25.47], [111.68, 25.32], [111.53, 24.97], [111.0, 24.75], [110.75, 24.85], [110.68, 24.82], [110.65, 24.75], [110.75, 24.5], [110.53, 23.97], [110.0, 23.75], [109.75, 23.85], [109.5, 23.75], [109.25, 23.85], [109.0, 23.75], [108.47, 23.97], [108.25, 24.5], [108.35, 24.75], [108.32, 24.82], [107.97, 24.97]]]]}, "2024-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.97, 24.97], [107.75, 25.5], [107.97, 26.03], [108.5, 26.25], [108.75, 26.15], [109.0, 26.25], [109.3, 26.13], [109.47, 26.53], [109.82, 26.68], [109.85, 26.75], [109.75, 27.0], [109.85, 27.25], [109.75, 27.5], [109.97, 28.03], [110.5, 28.25], [110.75, 28.15], [111.0, 28.25], [111.53, 28.03], [111.75, 27.5], [111.65, 27.25], [111.68, 27.18], [112.03, 27.03], [112.25, 26.5], [112.15, 26.25], [112.25, 26.0], [112.03, 25.47], [111.68, 25.32], [111.53, 24.97], [111.0, 24.75], [110.75, 24.85], [110.68, 24.82], [110.65, 24.75], [110.75, 24.5], [110.53, 23.97], [110.0, 23.75], [109.75, 23.85], [109.5, 23.75], [109.25, 23.85], [109.0, 23.75], [108.47, 23.97], [108.25, 24.5], [108.35, 24.75], [108.32, 24.82], [107.97, 24.97]]]]}, "2024-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.97, 24.97], [107.75, 25.5], [107.97, 26.03], [108.5, 26.25], [108.75, 26.15], [109.0, 26.25], [109.3, 26.13], [109.47, 26.53], [109.82, 26.68], [109.85, 26.75], [109.75, 27.0], [109.85, 27.25], [109.75, 27.5], [109.97, 28.03], [110.5, 28.25], [110.75, 28.15], [111.0, 28.25], [111.53, 28.03], [111.75, 27.5], [111.65, 27.25], [111.68, 27.18], [112.03, 27.03], [112.25, 26.5], [112.15, 26.25], [112.25, 26.0], [112.03, 25.47], [111.68, 25.32], [111.53, 24.97], [111.0, 24.75], [110.75, 24.85], [110.68, 24.82], [110.65, 24.75], [110.75, 24.5], [110.53, 23.97], [110.0, 23.75], [109.75, 23.85], [109.5, 23.75], [109.25, 23.85], [109.0, 23.75], [108.47, 23.97], [108.25, 24.5], [108.35, 24.75], [108.32, 24.82], [107.97, 24.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.937129279726662}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9263133594997592}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.61482802444283, 19.956461324672034, 20.98863044398098]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.17486973138017, 17.9798761789678, 18.884431858588698]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7518474260407837, -4.503093468429957, -3.5239991840285363]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.06610391830759, -5.937129279726662, -5.447075624436877]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.720313090427269, -2.2196795036198163, -1.7969308690290806]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2349669957393488, -2.6314030372843966, -2.535947440291703]}}