{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:16.289170", "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": "2011-Dec-29_to_2012-Jan-03_98.0_30.0"}, "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": 2011120002830}, "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 29 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 03 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 66879.15825654194}, "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", "S.Asia", "Tibetan-Plateau"]}, "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": 30.0}, "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": 98.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 95.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.0, 30.75], [98.53, 30.53], [98.75, 30.0], [98.53, 29.47], [98.0, 29.25], [97.47, 29.47], [97.25, 30.0], [97.47, 30.53], [98.0, 30.75]]]]}, "2011-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.97, 30.53], [97.32, 30.68], [97.47, 31.03], [98.0, 31.25], [98.53, 31.03], [98.7, 30.63], [99.0, 30.75], [99.53, 30.53], [99.75, 30.0], [99.53, 29.47], [99.0, 29.25], [98.7, 29.38], [98.53, 28.97], [98.0, 28.75], [97.75, 28.85], [97.5, 28.75], [96.97, 28.97], [96.75, 29.5], [96.85, 29.75], [96.75, 30.0], [96.97, 30.53]]]]}, "2011-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.35, 30.75], [96.25, 31.0], [96.47, 31.53], [97.0, 31.75], [97.53, 31.53], [97.68, 31.18], [97.75, 31.15], [98.0, 31.25], [98.53, 31.03], [98.68, 30.68], [98.75, 30.65], [98.82, 30.68], [98.97, 31.03], [99.5, 31.25], [99.75, 31.15], [100.0, 31.25], [100.53, 31.03], [100.75, 30.5], [100.65, 30.25], [100.75, 30.0], [100.54, 29.5], [100.75, 29.0], [100.65, 28.75], [100.75, 28.5], [100.53, 27.97], [100.0, 27.75], [99.47, 27.97], 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9.307271452228349}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.4917721521719525}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.578290882166527, -3.6089412518594486, -4.121437478608129, -3.8056157150315926, -3.7716743114644373, -6.6307006804191815]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.578290882166527, -2.5357649553433816, -0.8145048292427646, 0.26418556081938505, -0.022286828454468832, -1.8321834663515233]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.131164683902284, 5.769139678001845, 6.223807793380864, 6.899740729247626, 6.940543362442297, 5.525338556414741]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum 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