{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:28.652136", "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": "2015-Dec-08_to_2015-Dec-10_122.5_42.0"}, "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": 2015120001497}, "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": "December 08 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2015"}, "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": "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": 55982.91424311452}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "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": 42.0}, "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": 122.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.75, 41.5], [116.97, 42.03], [117.5, 42.25], [117.75, 42.15], [118.0, 42.25], [118.25, 42.15], [118.5, 42.25], [119.03, 42.03], [119.18, 41.68], [119.5, 41.54], [120.0, 41.75], [120.25, 41.65], [120.32, 41.68], [120.47, 42.03], [120.82, 42.18], [120.97, 42.53], [121.5, 42.75], [121.75, 42.65], [121.82, 42.68], [121.97, 43.03], [122.5, 43.25], [123.03, 43.03], [123.25, 42.5], [123.15, 42.25], [123.25, 42.0], [123.15, 41.75], [123.25, 41.5], [123.03, 40.97], [122.5, 40.75], [122.25, 40.85], [122.0, 40.75], [121.75, 40.85], [121.5, 40.75], [121.25, 40.85], [121.18, 40.82], [121.03, 40.47], [120.68, 40.32], [120.53, 39.97], [120.18, 39.82], [120.03, 39.47], [119.68, 39.32], [119.53, 38.97], [119.0, 38.75], [118.75, 38.85], [118.5, 38.75], [118.25, 38.85], [118.0, 38.75], [117.47, 38.97], [117.25, 39.5], [117.47, 40.03], [118.0, 40.25], [117.47, 40.47], [117.32, 40.82], [116.97, 40.97], [116.75, 41.5]], [[118.25, 40.15], [118.32, 40.18], [118.35, 40.25], [118.32, 40.32], [118.25, 40.35], [118.0, 40.25], [118.25, 40.15]]]]}, "2015-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.75, 41.5], [116.97, 42.03], [117.5, 42.25], [117.75, 42.15], [118.0, 42.25], [118.25, 42.15], [118.5, 42.25], [119.03, 42.03], [119.18, 41.68], [119.5, 41.54], [120.0, 41.75], [120.25, 41.65], [120.32, 41.68], [120.47, 42.03], [120.82, 42.18], [120.97, 42.53], [121.5, 42.75], [121.75, 42.65], [121.82, 42.68], [121.97, 43.03], [122.5, 43.25], [123.03, 43.03], [123.25, 42.5], [123.15, 42.25], [123.25, 42.0], [123.15, 41.75], [123.25, 41.5], [123.03, 40.97], [122.5, 40.75], [122.25, 40.85], [122.0, 40.75], [121.75, 40.85], [121.5, 40.75], [121.25, 40.85], [121.18, 40.82], [121.03, 40.47], [120.68, 40.32], [120.53, 39.97], [120.18, 39.82], [120.03, 39.47], [119.68, 39.32], [119.53, 38.97], [119.0, 38.75], [118.75, 38.85], [118.5, 38.75], [118.25, 38.85], [118.0, 38.75], [117.47, 38.97], [117.25, 39.5], [117.47, 40.03], [118.0, 40.25], [117.47, 40.47], [117.32, 40.82], [116.97, 40.97], [116.75, 41.5]], [[118.25, 40.15], [118.32, 40.18], [118.35, 40.25], [118.32, 40.32], [118.25, 40.35], [118.0, 40.25], [118.25, 40.15]]]]}, "2015-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.75, 41.5], [116.97, 42.03], [117.5, 42.25], [117.75, 42.15], [118.0, 42.25], [118.25, 42.15], [118.5, 42.25], [119.03, 42.03], [119.18, 41.68], [119.5, 41.54], [120.0, 41.75], [120.25, 41.65], [120.32, 41.68], [120.47, 42.03], [120.82, 42.18], [120.97, 42.53], [121.5, 42.75], [121.75, 42.65], [121.82, 42.68], [121.97, 43.03], [122.5, 43.25], [123.03, 43.03], [123.25, 42.5], [123.15, 42.25], [123.25, 42.0], [123.15, 41.75], [123.25, 41.5], [123.03, 40.97], [122.5, 40.75], [122.25, 40.85], [122.0, 40.75], [121.75, 40.85], [121.5, 40.75], [121.25, 40.85], [121.18, 40.82], [121.03, 40.47], [120.68, 40.32], [120.53, 39.97], [120.18, 39.82], [120.03, 39.47], [119.68, 39.32], [119.53, 38.97], [119.0, 38.75], [118.75, 38.85], [118.5, 38.75], [118.25, 38.85], [118.0, 38.75], [117.47, 38.97], [117.25, 39.5], [117.47, 40.03], [118.0, 40.25], [117.47, 40.47], [117.32, 40.82], [116.97, 40.97], [116.75, 41.5]], [[118.25, 40.15], [118.32, 40.18], [118.35, 40.25], [118.32, 40.32], [118.25, 40.35], [118.0, 40.25], [118.25, 40.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.896946419537073}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.517612748646566}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.6766820879652187, 2.615816399674543, -0.7291045458858889]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.4341986788942904, 5.962489258258529, 2.616148659041073]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.160772031553395, 8.324809283343603, 5.067256931042699]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.912237046504515, 11.896946419537073, 6.1140134094781615]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7119137064300427, 2.3313740931269584, 1.4510810915272063]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.240858289109629, 3.092371837872627, 1.7670985311268215]}}