{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:43.172650", "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": "2021-Sep-10_to_2021-Sep-15_123.5_32.5"}, "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": 2021090001838}, "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": "September 10 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 15 2021"}, "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": 154878.87749287183}, "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": ["East China Sea", "Yellow Sea"]}, "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": 32.5}, "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": 123.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "123.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 126.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[121.85, 34.75], [121.75, 35.0], [121.85, 35.25], [121.75, 35.5], [121.97, 36.03], [122.32, 36.18], [122.47, 36.53], [123.0, 36.75], [123.53, 36.53], [123.68, 36.18], [123.75, 36.15], [124.0, 36.25], [124.25, 36.15], [124.32, 36.18], [124.35, 36.25], [124.25, 36.5], [124.47, 37.03], [125.0, 37.25], [125.25, 37.15], [125.5, 37.25], [126.03, 37.03], [126.25, 36.5], [126.03, 35.97], [125.68, 35.82], [125.53, 35.47], [125.18, 35.32], [125.03, 34.97], [124.5, 34.75], [124.25, 34.85], [124.18, 34.82], [124.03, 34.47], [123.68, 34.32], [123.65, 34.25], [123.68, 34.18], [123.75, 34.15], [124.0, 34.25], [124.25, 34.15], [124.5, 34.25], [124.75, 34.15], [125.0, 34.25], [125.25, 34.15], [125.5, 34.25], [125.75, 34.15], [126.0, 34.25], [126.53, 34.03], [126.75, 33.5], [126.53, 32.97], [126.18, 32.82], [126.15, 32.75], [126.25, 32.5], [126.03, 31.97], [125.68, 31.82], [125.53, 31.47], [125.18, 31.32], [125.03, 30.97], [124.5, 30.75], [124.25, 30.85], [124.18, 30.82], [124.03, 30.47], [123.5, 30.25], [123.25, 30.35], [123.0, 30.25], [122.47, 30.47], [122.25, 31.0], [122.35, 31.25], [122.32, 31.32], [122.25, 31.35], [122.0, 31.25], [121.47, 31.47], [121.32, 31.82], [120.97, 31.97], [120.82, 32.32], [120.5, 32.46], [120.0, 32.25], [119.47, 32.47], [119.25, 33.0], [119.47, 33.53], [119.82, 33.68], [119.97, 34.03], [120.5, 34.25], [120.75, 34.15], [121.0, 34.25], [121.3, 34.13], [121.47, 34.53], [121.82, 34.68], [121.85, 34.75]]]]}}, "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": {"2021-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.5, 33.75], [121.75, 33.65], [121.82, 33.68], [121.97, 34.03], [122.5, 34.25], [122.75, 34.15], [123.0, 34.25], [123.25, 34.15], [123.5, 34.25], [124.03, 34.03], [124.18, 33.68], [124.25, 33.65], [124.5, 33.75], [125.03, 33.53], [125.25, 33.0], [125.03, 32.47], [124.5, 32.25], [124.25, 32.35], [124.18, 32.32], [124.15, 32.25], [124.25, 32.0], [124.03, 31.47], [123.68, 31.32], [123.53, 30.97], [123.0, 30.75], [122.47, 30.97], [122.32, 31.32], [122.25, 31.35], [122.0, 31.25], [121.47, 31.47], [121.32, 31.82], [120.97, 31.97], [120.75, 32.5], [120.85, 32.75], [120.75, 33.0], [120.97, 33.53], [121.5, 33.75]]], [[[120.0, 32.25], [119.47, 32.47], [119.25, 33.0], [119.47, 33.53], [120.0, 33.75], [120.53, 33.53], [120.75, 33.0], [120.53, 32.47], [120.0, 32.25]]]]}, "2021-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.5, 34.25], [121.03, 34.03], [121.18, 33.68], [121.25, 33.65], [121.5, 33.75], [121.75, 33.65], [121.82, 33.68], [121.97, 34.03], [122.32, 34.18], [122.47, 34.53], [123.0, 34.75], [123.53, 34.53], [123.68, 34.18], [123.75, 34.15], [124.0, 34.25], [124.25, 34.15], [124.5, 34.25], [124.75, 34.15], [125.0, 34.25], [125.25, 34.15], [125.5, 34.25], [125.75, 34.15], [126.0, 34.25], [126.53, 34.03], [126.75, 33.5], [126.53, 32.97], [126.18, 32.82], [126.03, 32.47], [125.5, 32.25], [125.25, 32.35], [125.18, 32.32], [125.03, 31.97], [124.5, 31.75], [124.25, 31.85], [124.18, 31.82], [124.03, 31.47], [123.68, 31.32], [123.53, 30.97], [123.0, 30.75], [122.47, 30.97], [122.32, 31.32], [122.25, 31.35], [122.0, 31.25], [121.47, 31.47], [121.32, 31.82], [120.97, 31.97], [120.82, 32.32], [120.5, 32.46], [120.0, 32.25], [119.47, 32.47], [119.25, 33.0], [119.47, 33.53], [119.82, 33.68], [119.97, 34.03], [120.5, 34.25]]], [[[122.35, 35.75], [122.25, 36.0], [122.47, 36.53], [123.0, 36.75], [123.53, 36.53], [123.68, 36.18], [124.03, 36.03], [124.25, 35.5], [124.03, 34.97], [123.5, 34.75], [123.25, 34.85], [123.0, 34.75], [122.47, 34.97], [122.25, 35.5], [122.35, 35.75]]], [[[124.97, 35.97], [124.75, 36.5], [124.97, 37.03], [125.5, 37.25], [126.03, 37.03], [126.25, 36.5], [126.03, 35.97], [125.5, 35.75], [124.97, 35.97]]]]}, "2021-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 34.03], [120.5, 34.25], [120.75, 34.15], [121.0, 34.25], [121.53, 34.03], [121.68, 33.68], [121.75, 33.65], [121.82, 33.68], [121.85, 33.75], [121.75, 34.0], [121.85, 34.25], [121.75, 34.5], [121.85, 34.75], [121.75, 35.0], [121.85, 35.25], [121.75, 35.5], [121.97, 36.03], [122.32, 36.18], [122.47, 36.53], [123.0, 36.75], [123.53, 36.53], [123.68, 36.18], [123.75, 36.15], [124.0, 36.25], [124.25, 36.15], [124.32, 36.18], [124.35, 36.25], [124.25, 36.5], [124.47, 37.03], [125.0, 37.25], [125.25, 37.15], [125.5, 37.25], [126.03, 37.03], [126.25, 36.5], [126.03, 35.97], [125.68, 35.82], [125.53, 35.47], [125.18, 35.32], [125.03, 34.97], [124.5, 34.75], [124.25, 34.85], [124.18, 34.82], [124.03, 34.47], [123.68, 34.32], [123.65, 34.25], [123.68, 34.18], [123.75, 34.15], [124.0, 34.25], [124.25, 34.15], [124.5, 34.25], [124.75, 34.15], [125.0, 34.25], [125.25, 34.15], [125.5, 34.25], [125.75, 34.15], [126.0, 34.25], [126.53, 34.03], [126.75, 33.5], [126.53, 32.97], [126.18, 32.82], [126.15, 32.75], [126.25, 32.5], [126.03, 31.97], [125.68, 31.82], [125.53, 31.47], [125.18, 31.32], [125.03, 30.97], [124.5, 30.75], [124.25, 30.85], [124.18, 30.82], [124.03, 30.47], [123.5, 30.25], [123.25, 30.35], [123.0, 30.25], [122.47, 30.47], [122.25, 31.0], [122.35, 31.25], [122.32, 31.32], [122.25, 31.35], [122.0, 31.25], [121.47, 31.47], [121.32, 31.82], [120.97, 31.97], [120.82, 32.32], [120.5, 32.46], [120.0, 32.25], [119.47, 32.47], [119.25, 33.0], [119.47, 33.53], [119.82, 33.68], [119.97, 34.03]]]]}, "2021-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 32.97], [119.75, 33.5], [119.97, 34.03], [120.5, 34.25], [120.75, 34.15], [121.0, 34.25], [121.3, 34.13], [121.47, 34.53], [121.82, 34.68], [121.85, 34.75], [121.75, 35.0], [121.85, 35.25], [121.75, 35.5], [121.97, 36.03], [122.32, 36.18], [122.47, 36.53], [123.0, 36.75], [123.53, 36.53], [123.68, 36.18], [123.75, 36.15], [124.0, 36.25], [124.25, 36.15], [124.32, 36.18], [124.35, 36.25], [124.25, 36.5], [124.47, 37.03], [125.0, 37.25], [125.25, 37.15], [125.5, 37.25], [126.03, 37.03], [126.25, 36.5], [126.03, 35.97], [125.68, 35.82], [125.53, 35.47], [125.18, 35.32], [125.03, 34.97], [124.5, 34.75], [124.25, 34.85], [124.18, 34.82], [124.03, 34.47], [123.68, 34.32], [123.65, 34.25], [123.68, 34.18], [123.75, 34.15], [124.0, 34.25], [124.25, 34.15], [124.5, 34.25], [124.75, 34.15], [125.0, 34.25], [125.25, 34.15], [125.5, 34.25], [125.75, 34.15], [126.0, 34.25], [126.53, 34.03], [126.75, 33.5], [126.53, 32.97], [126.18, 32.82], [126.15, 32.75], [126.25, 32.5], [126.03, 31.97], [125.68, 31.82], [125.53, 31.47], [125.18, 31.32], [125.03, 30.97], [124.5, 30.75], [124.25, 30.85], [124.18, 30.82], [124.03, 30.47], [123.5, 30.25], [123.25, 30.35], [123.0, 30.25], [122.47, 30.47], [122.25, 31.0], [122.35, 31.25], [122.32, 31.32], [122.25, 31.35], [122.0, 31.25], [121.47, 31.47], [121.32, 31.82], [120.97, 31.97], [120.82, 32.32], [120.47, 32.47], [120.32, 32.82], [119.97, 32.97]]]]}, "2021-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.47, 34.53], [121.82, 34.68], [121.85, 34.75], [121.75, 35.0], [121.85, 35.25], [121.75, 35.5], [121.97, 36.03], [122.32, 36.18], [122.47, 36.53], [123.0, 36.75], [123.53, 36.53], [123.68, 36.18], [123.75, 36.15], [124.0, 36.25], [124.25, 36.15], [124.32, 36.18], [124.35, 36.25], [124.25, 36.5], [124.47, 37.03], [125.0, 37.25], [125.25, 37.15], [125.5, 37.25], [126.03, 37.03], [126.25, 36.5], [126.03, 35.97], [125.68, 35.82], [125.53, 35.47], [125.18, 35.32], [125.03, 34.97], [124.5, 34.75], [124.25, 34.85], [124.18, 34.82], [124.03, 34.47], [123.68, 34.32], [123.65, 34.25], [123.75, 34.0], [123.57, 33.57], [124.0, 33.75], [124.25, 33.65], [124.32, 33.68], [124.47, 34.03], [125.0, 34.25], [125.25, 34.15], [125.5, 34.25], [126.03, 34.03], [126.25, 33.5], [126.15, 33.25], [126.25, 33.0], [126.15, 32.75], [126.25, 32.5], [126.03, 31.97], [125.68, 31.82], [125.53, 31.47], [125.18, 31.32], [125.03, 30.97], [124.5, 30.75], [124.25, 30.85], [124.18, 30.82], [124.03, 30.47], [123.5, 30.25], [123.25, 30.35], [123.0, 30.25], [122.47, 30.47], [122.25, 31.0], [122.35, 31.25], [122.25, 31.5], [122.35, 31.75], [122.25, 32.0], [122.35, 32.25], [122.25, 32.5], [122.38, 32.8], [121.97, 32.97], [121.82, 33.32], [121.7, 33.38], [121.53, 32.97], [121.0, 32.75], [120.47, 32.97], [120.25, 33.5], [120.47, 34.03], [121.0, 34.25], [121.3, 34.13], [121.47, 34.53]], [[123.25, 33.15], [123.32, 33.18], [123.43, 33.43], [123.18, 33.32], [123.13, 33.2], [123.25, 33.15]]]]}, "2021-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.47, 34.53], [121.82, 34.68], [121.97, 35.03], [122.38, 35.2], [122.25, 35.5], [122.47, 36.03], [123.0, 36.25], [123.53, 36.03], [123.75, 35.5], [123.53, 34.97], [123.13, 34.8], [123.25, 34.5], [123.15, 34.25], [123.25, 34.0], [123.03, 33.47], [122.5, 33.25], [122.25, 33.35], [122.0, 33.25], [121.7, 33.38], [121.53, 32.97], [121.0, 32.75], [120.47, 32.97], [120.25, 33.5], [120.47, 34.03], [121.0, 34.25], [121.3, 34.13], [121.47, 34.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.1220262326735906}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6651123634919014}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.26128694345215, 25.943431601444388, 25.887571240262275, 25.909468025135652, 25.5995982589277, 24.91961303976069]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.926584679926975, 26.734119281333562, 27.05760499188574, 27.207778034411433, 26.983104778701602, 25.42946654488918]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6493500541630293, 1.6203302160217108, 1.6609488749518286, 1.7916886461535215, 1.5831429180964238, 1.3067743246403325]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.921407593828178, 3.1220262326735906, 2.559881337065633, 2.1471867826211906, 2.220132316548529, 1.3455070525012616]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4548932652286442, 1.444488427383051, 1.488086288638574, 1.6342362838535995, 1.4612843891076506, 1.1896837819137]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7086681922913727, 1.6575571343220532, 1.8820948982175367, 2.023875434881107, 2.102044133248259, 1.2151691594174912]}}