{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:51.712512", "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": "2023-Jan-30_to_2023-Feb-01_112.5_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": 2023010003022}, "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": "January 30 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 2023"}, "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": 75203.65784745911}, "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": 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": 112.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "112.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 110.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 113.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[109.82, 29.68], [109.97, 30.03], [110.5, 30.25], [110.75, 30.15], [110.82, 30.18], [110.85, 30.25], [110.75, 30.5], [110.97, 31.03], [111.5, 31.25], [111.75, 31.15], [111.82, 31.18], [111.97, 31.53], [112.5, 31.75], [112.75, 31.65], [113.0, 31.75], [113.53, 31.53], [113.68, 31.18], [114.03, 31.03], [114.25, 30.5], [114.15, 30.25], [114.25, 30.0], [114.15, 29.75], [114.25, 29.5], [114.03, 28.97], [113.68, 28.82], [113.53, 28.47], [113.18, 28.32], [113.03, 27.97], [112.5, 27.75], [112.25, 27.85], [112.0, 27.75], [111.47, 27.97], [111.3, 28.38], [111.0, 28.25], [110.75, 28.35], [110.68, 28.32], [110.53, 27.97], [110.0, 27.75], [109.47, 27.97], [109.25, 28.5], [109.35, 28.75], [109.25, 29.0], [109.47, 29.53], [109.82, 29.68]]]]}}, "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": {"2023-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.25, 29.0], [109.47, 29.53], [109.82, 29.68], [109.97, 30.03], [110.5, 30.25], [110.75, 30.15], [110.82, 30.18], [110.85, 30.25], [110.75, 30.5], [110.97, 31.03], [111.5, 31.25], [111.75, 31.15], [111.82, 31.18], [111.97, 31.53], [112.5, 31.75], [112.75, 31.65], [113.0, 31.75], [113.53, 31.53], [113.68, 31.18], [114.03, 31.03], [114.25, 30.5], [114.15, 30.25], [114.25, 30.0], [114.15, 29.75], [114.25, 29.5], [114.03, 28.97], [113.68, 28.82], [113.53, 28.47], [113.18, 28.32], [113.03, 27.97], [112.5, 27.75], [112.25, 27.85], [112.0, 27.75], [111.47, 27.97], [111.3, 28.38], [111.0, 28.25], [110.75, 28.35], [110.68, 28.32], [110.53, 27.97], [110.0, 27.75], [109.47, 27.97], [109.25, 28.5], [109.35, 28.75], [109.25, 29.0]]]]}, "2023-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.25, 29.0], [109.47, 29.53], [109.82, 29.68], [109.97, 30.03], [110.5, 30.25], [110.75, 30.15], [110.82, 30.18], [110.85, 30.25], [110.75, 30.5], [110.97, 31.03], [111.5, 31.25], [111.75, 31.15], [111.82, 31.18], [111.97, 31.53], [112.5, 31.75], [112.75, 31.65], [113.0, 31.75], [113.53, 31.53], [113.68, 31.18], [114.03, 31.03], [114.25, 30.5], [114.15, 30.25], [114.25, 30.0], [114.15, 29.75], [114.25, 29.5], [114.03, 28.97], [113.68, 28.82], [113.53, 28.47], [113.18, 28.32], [113.03, 27.97], [112.5, 27.75], [112.25, 27.85], [112.0, 27.75], [111.47, 27.97], [111.3, 28.38], [111.0, 28.25], [110.75, 28.35], [110.68, 28.32], [110.53, 27.97], [110.0, 27.75], [109.47, 27.97], [109.25, 28.5], [109.35, 28.75], [109.25, 29.0]]]]}, "2023-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.25, 29.0], [109.47, 29.53], [109.82, 29.68], [109.97, 30.03], [110.5, 30.25], [110.75, 30.15], [110.82, 30.18], [110.85, 30.25], [110.75, 30.5], [110.97, 31.03], [111.5, 31.25], [111.75, 31.15], [111.82, 31.18], [111.97, 31.53], [112.5, 31.75], [112.75, 31.65], [113.0, 31.75], [113.53, 31.53], [113.68, 31.18], [114.03, 31.03], [114.25, 30.5], [114.15, 30.25], [114.25, 30.0], [114.15, 29.75], [114.25, 29.5], [114.03, 28.97], [113.68, 28.82], [113.53, 28.47], [113.18, 28.32], [113.03, 27.97], [112.5, 27.75], [112.25, 27.85], [112.0, 27.75], [111.47, 27.97], [111.3, 28.38], [111.0, 28.25], [110.75, 28.35], [110.68, 28.32], [110.53, 27.97], [110.0, 27.75], [109.47, 27.97], [109.25, 28.5], [109.35, 28.75], [109.25, 29.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.1230591645417}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.614464040867305}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.610698350264329, 12.367540303675298, 10.233134521529337]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.846417061169404, 14.752190571604558, 11.734004280509794]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.193176580726733, 6.89991763045974, 4.750297911415442]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.247342118415645, 8.1230591645417, 5.406546822613507]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5241090860358197, 2.084723055135545, 1.5116331719638811]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.887211656793939, 2.3966522172303244, 1.6987566794867714]}}