{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:45.188664", "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-Apr-10_to_2023-Apr-13_112.0_30.5"}, "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": 2023040001786}, "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": "April 10 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 13 2023"}, "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": 189769.80678330478}, "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": 30.5}, "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": 112.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "112.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 110.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[111.47, 31.03], [112.0, 31.25], [112.25, 31.15], [112.32, 31.18], [112.47, 31.53], [113.0, 31.75], [113.25, 31.65], [113.32, 31.68], [113.47, 32.03], [114.0, 32.25], [114.25, 32.15], [114.5, 32.25], [114.75, 32.15], [114.82, 32.18], [114.97, 32.53], [115.5, 32.75], [115.75, 32.65], [116.0, 32.75], [116.53, 32.53], [116.68, 32.18], [117.03, 32.03], [117.18, 31.68], [117.25, 31.65], [117.5, 31.75], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.75, 31.0], [118.65, 30.75], [118.75, 30.5], [118.65, 30.25], [118.68, 30.18], [119.03, 30.03], [119.25, 29.5], [119.03, 28.97], [118.5, 28.75], [118.25, 28.85], [118.18, 28.82], [118.03, 28.47], [117.5, 28.25], [117.25, 28.35], [117.0, 28.25], [116.47, 28.47], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.47, 28.97], [115.32, 29.32], [115.25, 29.35], [115.13, 29.3], [115.25, 29.0], [115.03, 28.47], [114.68, 28.32], [114.53, 27.97], [114.0, 27.75], [113.7, 27.88], [113.53, 27.47], [113.0, 27.25], [112.75, 27.35], [112.5, 27.25], [111.97, 27.47], [111.75, 28.0], [111.85, 28.25], [111.8, 28.38], [111.5, 28.25], [110.97, 28.47], [110.82, 28.82], [110.75, 28.85], [110.5, 28.75], [109.97, 28.97], [109.75, 29.5], [109.97, 30.03], [110.32, 30.18], [110.47, 30.53], [111.0, 30.75], [111.25, 30.65], [111.32, 30.68], [111.47, 31.03]]]]}}, "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": {"2023-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.47, 30.53], [111.0, 30.75], [111.25, 30.65], [111.32, 30.68], [111.47, 31.03], [112.0, 31.25], [112.25, 31.15], [112.32, 31.18], [112.47, 31.53], [113.0, 31.75], [113.25, 31.65], [113.32, 31.68], [113.47, 32.03], [114.0, 32.25], [114.25, 32.15], [114.5, 32.25], [114.75, 32.15], [114.82, 32.18], [114.97, 32.53], [115.5, 32.75], [115.75, 32.65], [116.0, 32.75], [116.53, 32.53], [116.68, 32.18], [117.03, 32.03], [117.18, 31.68], [117.25, 31.65], [117.5, 31.75], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.75, 31.0], [118.65, 30.75], [118.75, 30.5], [118.65, 30.25], [118.68, 30.18], [119.03, 30.03], [119.25, 29.5], [119.03, 28.97], [118.5, 28.75], [118.25, 28.85], [118.18, 28.82], [118.03, 28.47], [117.5, 28.25], [117.25, 28.35], [117.0, 28.25], [116.47, 28.47], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.47, 28.97], [115.32, 29.32], [115.25, 29.35], [115.0, 29.25], [114.75, 29.35], [114.5, 29.25], [114.25, 29.35], [114.18, 29.32], [114.03, 28.97], [113.5, 28.75], [113.25, 28.85], [113.0, 28.75], [112.75, 28.85], [112.5, 28.75], [112.25, 28.85], [112.18, 28.82], [112.03, 28.47], [111.5, 28.25], [110.97, 28.47], [110.82, 28.82], [110.75, 28.85], [110.5, 28.75], [109.97, 28.97], [109.75, 29.5], [109.97, 30.03], [110.32, 30.18], [110.47, 30.53]]]]}, "2023-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.47, 30.53], [111.0, 30.75], [111.25, 30.65], [111.32, 30.68], [111.47, 31.03], [112.0, 31.25], [112.25, 31.15], [112.32, 31.18], [112.47, 31.53], [113.0, 31.75], [113.25, 31.65], [113.32, 31.68], [113.47, 32.03], [114.0, 32.25], [114.25, 32.15], [114.5, 32.25], [114.75, 32.15], [114.82, 32.18], [114.97, 32.53], [115.5, 32.75], [115.75, 32.65], [116.0, 32.75], [116.53, 32.53], [116.68, 32.18], [117.03, 32.03], [117.18, 31.68], [117.25, 31.65], [117.5, 31.75], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.75, 31.0], [118.65, 30.75], [118.75, 30.5], [118.65, 30.25], [118.68, 30.18], [119.03, 30.03], [119.25, 29.5], [119.03, 28.97], [118.5, 28.75], [118.25, 28.85], [118.18, 28.82], [118.03, 28.47], [117.5, 28.25], [117.25, 28.35], [117.0, 28.25], [116.47, 28.47], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.47, 28.97], [115.32, 29.32], [115.25, 29.35], [115.13, 29.3], [115.25, 29.0], [115.03, 28.47], [114.68, 28.32], [114.53, 27.97], [114.0, 27.75], [113.7, 27.88], [113.53, 27.47], [113.0, 27.25], [112.75, 27.35], [112.5, 27.25], [111.97, 27.47], [111.75, 28.0], [111.85, 28.25], [111.8, 28.38], [111.5, 28.25], [110.97, 28.47], [110.82, 28.82], [110.75, 28.85], [110.5, 28.75], [109.97, 28.97], [109.75, 29.5], [109.97, 30.03], [110.32, 30.18], [110.47, 30.53]]]]}, "2023-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.47, 30.53], [111.0, 30.75], [111.25, 30.65], [111.32, 30.68], [111.47, 31.03], [112.0, 31.25], [112.25, 31.15], [112.32, 31.18], [112.47, 31.53], [113.0, 31.75], [113.25, 31.65], [113.32, 31.68], [113.47, 32.03], [114.0, 32.25], [114.25, 32.15], [114.5, 32.25], [114.75, 32.15], [114.82, 32.18], [114.97, 32.53], [115.5, 32.75], [115.75, 32.65], [116.0, 32.75], [116.53, 32.53], [116.68, 32.18], [117.03, 32.03], [117.18, 31.68], [117.25, 31.65], [117.5, 31.75], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.75, 31.0], [118.65, 30.75], [118.75, 30.5], [118.65, 30.25], [118.68, 30.18], [119.03, 30.03], [119.25, 29.5], [119.03, 28.97], [118.5, 28.75], [118.25, 28.85], [118.18, 28.82], [118.03, 28.47], [117.5, 28.25], [117.25, 28.35], [117.0, 28.25], [116.47, 28.47], [116.32, 28.82], [116.25, 28.85], [116.0, 28.75], [115.47, 28.97], [115.32, 29.32], [115.25, 29.35], [115.13, 29.3], [115.25, 29.0], [115.03, 28.47], [114.68, 28.32], [114.53, 27.97], [114.0, 27.75], [113.7, 27.88], [113.53, 27.47], [113.0, 27.25], [112.75, 27.35], [112.5, 27.25], [111.97, 27.47], [111.75, 28.0], [111.85, 28.25], [111.8, 28.38], [111.5, 28.25], [110.97, 28.47], [110.82, 28.82], [110.75, 28.85], [110.5, 28.75], [109.97, 28.97], [109.75, 29.5], [109.97, 30.03], [110.32, 30.18], [110.47, 30.53]]]]}, "2023-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.0, 30.75], [111.25, 30.65], [111.32, 30.68], [111.47, 31.03], [112.0, 31.25], [112.25, 31.15], [112.5, 31.25], [112.75, 31.15], [113.0, 31.25], [113.5, 31.04], [114.0, 31.25], [114.53, 31.03], [114.75, 30.5], [114.54, 30.0], [114.68, 29.68], [115.03, 29.53], [115.25, 29.0], [115.03, 28.47], [114.68, 28.32], [114.53, 27.97], [114.0, 27.75], [113.7, 27.88], [113.53, 27.47], [113.0, 27.25], [112.75, 27.35], [112.5, 27.25], [111.97, 27.47], [111.75, 28.0], [111.85, 28.25], [111.8, 28.38], [111.5, 28.25], [110.97, 28.47], [110.82, 28.82], [110.75, 28.85], [110.5, 28.75], [109.97, 28.97], [109.75, 29.5], [109.97, 30.03], [110.32, 30.18], [110.47, 30.53], [111.0, 30.75]]], [[[116.0, 31.25], [115.47, 31.47], [115.25, 32.0], [115.47, 32.53], [116.0, 32.75], [116.53, 32.53], [116.75, 32.0], [116.53, 31.47], [116.0, 31.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.506081953696025}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.712571395755303}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.417681579301757, 21.397358549070304, 22.318743823277373, 22.008304931958605]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.7140733522441, 23.135691025292374, 24.8172951965999, 23.898702511948898]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.532884904756357, 5.429678013558767, 6.267334701206547, 5.416922669157116]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.178300075743209, 6.519752693175178, 7.506081953696025, 6.738943099554149]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5184368545923255, 1.4614338964921747, 1.6807411540768395, 1.4555925468212076]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8189324635132125, 1.881405911535284, 2.099830709715182, 1.681755459459511]}}