{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:14:28.463169", "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": "2020-Jun-17_to_2020-Jun-20_88.5_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": 2020060002426}, "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": "June 17 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2020"}, "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": 99285.90994692183}, "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": 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": 88.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "88.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 86.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[85.75, 32.0], [85.97, 32.53], [86.5, 32.75], [86.75, 32.646], [87.0, 32.75], [87.25, 32.646], [87.323, 32.677], [87.354, 32.75], [87.354, 32.751], [87.25, 33.0], [87.47, 33.53], [87.823, 33.677], [87.97, 34.03], [88.5, 34.25], [88.75, 34.146], [89.0, 34.25], [89.25, 34.146], [89.5, 34.25], [89.75, 34.146], [90.0, 34.25], [90.25, 34.146], [90.5, 34.25], [90.75, 34.146], [91.0, 34.25], [91.53, 34.03], [91.75, 33.5], [91.625, 33.198], [92.03, 33.03], [92.25, 32.5], [92.03, 31.97], [91.677, 31.823], [91.53, 31.47], [91.0, 31.25], [90.751, 31.354], [90.75, 31.354], [90.677, 31.323], [90.646, 31.25], [90.677, 31.177], [91.03, 31.03], [91.25, 30.5], [91.03, 29.97], [90.5, 29.75], [90.25, 29.854], [90.0, 29.75], [89.75, 29.854], [89.5, 29.75], [88.97, 29.97], [88.75, 30.5], [88.875, 30.802], [88.75, 30.854], [88.5, 30.75], [88.25, 30.854], [88.0, 30.75], [87.47, 30.97], [87.323, 31.323], [87.25, 31.354], [87.0, 31.25], [86.75, 31.354], [86.5, 31.25], [85.97, 31.47], [85.75, 32.0]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[86.75, 31.353553390593273], [86.5, 31.25], [85.96966991411009, 31.46966991411009], [85.75, 32.0], [85.96966991411009, 32.53033008588991], [86.5, 32.75], [86.75, 32.64644660940672], [87.0, 32.75], [87.25, 32.64644660940672], [87.32322330470336, 32.67677669529664], [87.46966991411009, 33.03033008588991], [88.0, 33.25], [88.25, 33.14644660940672], [88.5, 33.25], [88.75, 33.14644660940672], [89.0, 33.25], [89.25, 33.14644660940672], [89.5, 33.25], [90.03033008588991, 33.03033008588991], [90.17677669529664, 32.67677669529664], [90.25, 32.64644660940672], [90.5, 32.75], [91.03033008588991, 32.53033008588991], [91.25, 32.0], [91.03033008588991, 31.46966991411009], [90.67677669529664, 31.32322330470336], [90.64644660940672, 31.25], [90.67677669529664, 31.17677669529664], [91.03033008588991, 31.03033008588991], [91.25, 30.5], [91.03033008588991, 29.96966991411009], [90.5, 29.75], [90.25, 29.853553390593273], [90.0, 29.75], [89.75, 29.853553390593273], [89.5, 29.75], [88.96966991411009, 29.96966991411009], [88.75, 30.5], [88.875, 30.80177669529664], [88.75, 30.853553390593273], [88.5, 30.75], [88.25, 30.853553390593273], [88.0, 30.75], [87.46966991411009, 30.96966991411009], [87.32322330470336, 31.32322330470336], [87.25, 31.353553390593273], [87.0, 31.25], [86.75, 31.353553390593273]]]}, "2020-06-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[86.75, 31.353553390593273], [86.5, 31.25], [85.96966991411009, 31.46966991411009], [85.75, 32.0], [85.96966991411009, 32.53033008588991], [86.5, 32.75], [86.75, 32.64644660940672], [87.0, 32.75], [87.25, 32.64644660940672], [87.32322330470336, 32.67677669529664], [87.35355339059328, 32.75], [87.25, 33.0], [87.46966991411009, 33.53033008588991], [87.82322330470336, 33.67677669529664], [87.96966991411009, 34.03033008588991], [88.5, 34.25], [88.75, 34.14644660940672], [89.0, 34.25], [89.25, 34.14644660940672], [89.5, 34.25], [89.75, 34.14644660940672], [90.0, 34.25], [90.25, 34.14644660940672], [90.5, 34.25], [90.75, 34.14644660940672], [91.0, 34.25], [91.53033008588991, 34.03033008588991], [91.75, 33.5], [91.625, 33.19822330470336], [92.03033008588991, 33.03033008588991], [92.25, 32.5], [92.03033008588991, 31.96966991411009], [91.67677669529664, 31.82322330470336], [91.53033008588991, 31.46966991411009], [91.0, 31.25], [90.75, 31.353553390593273], [90.67677669529664, 31.32322330470336], [90.64644660940672, 31.25], [90.67677669529664, 31.17677669529664], [91.03033008588991, 31.03033008588991], [91.25, 30.5], [91.03033008588991, 29.96966991411009], [90.5, 29.75], [90.25, 29.853553390593273], [90.0, 29.75], [89.75, 29.853553390593273], [89.5, 29.75], [88.96966991411009, 29.96966991411009], [88.75, 30.5], [88.875, 30.80177669529664], [88.75, 30.853553390593273], [88.5, 30.75], [88.25, 30.853553390593273], [88.0, 30.75], [87.46966991411009, 30.96966991411009], [87.32322330470336, 31.32322330470336], [87.25, 31.353553390593273], [87.0, 31.25], [86.75, 31.353553390593273]]]}, "2020-06-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[86.75, 31.353553390593273], [86.5, 31.25], [85.96966991411009, 31.46966991411009], [85.75, 32.0], [85.96966991411009, 32.53033008588991], [86.5, 32.75], [86.75, 32.64644660940672], [87.0, 32.75], [87.25, 32.64644660940672], [87.32322330470336, 32.67677669529664], [87.35355339059328, 32.75], [87.25, 33.0], [87.46966991411009, 33.53033008588991], [87.82322330470336, 33.67677669529664], [87.96966991411009, 34.03033008588991], [88.5, 34.25], [88.75, 34.14644660940672], [89.0, 34.25], [89.25, 34.14644660940672], [89.5, 34.25], [89.75, 34.14644660940672], [90.0, 34.25], [90.25, 34.14644660940672], [90.5, 34.25], [90.75, 34.14644660940672], [91.0, 34.25], [91.53033008588991, 34.03033008588991], [91.75, 33.5], [91.625, 33.19822330470336], [92.03033008588991, 33.03033008588991], [92.25, 32.5], [92.03033008588991, 31.96966991411009], [91.67677669529664, 31.82322330470336], [91.53033008588991, 31.46966991411009], [91.0, 31.25], [90.75, 31.353553390593273], [90.67677669529664, 31.32322330470336], [90.64644660940672, 31.25], [90.67677669529664, 31.17677669529664], [91.03033008588991, 31.03033008588991], [91.25, 30.5], [91.03033008588991, 29.96966991411009], [90.5, 29.75], [90.25, 29.853553390593273], [90.0, 29.75], [89.75, 29.853553390593273], [89.5, 29.75], [88.96966991411009, 29.96966991411009], [88.75, 30.5], [88.875, 30.80177669529664], [88.75, 30.853553390593273], [88.5, 30.75], [88.25, 30.853553390593273], [88.0, 30.75], [87.46966991411009, 30.96966991411009], [87.32322330470336, 31.32322330470336], [87.25, 31.353553390593273], [87.0, 31.25], [86.75, 31.353553390593273]]]}, "2020-06-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[87.82322330470336, 32.32322330470336], [87.46966991411009, 32.46966991411009], [87.25, 33.0], [87.46966991411009, 33.53033008588991], [87.82322330470336, 33.67677669529664], [87.96966991411009, 34.03033008588991], [88.5, 34.25], [88.75, 34.14644660940672], [89.0, 34.25], [89.25, 34.14644660940672], [89.5, 34.25], [89.75, 34.14644660940672], [90.0, 34.25], [90.25, 34.14644660940672], [90.5, 34.25], [90.75, 34.14644660940672], [91.0, 34.25], [91.53033008588991, 34.03033008588991], [91.75, 33.5], [91.625, 33.19822330470336], [92.03033008588991, 33.03033008588991], [92.25, 32.5], [92.03033008588991, 31.96966991411009], [91.67677669529664, 31.82322330470336], [91.53033008588991, 31.46966991411009], [91.0, 31.25], [90.75, 31.353553390593273], [90.5, 31.25], [89.96966991411009, 31.46966991411009], [89.82322330470336, 31.82322330470336], [89.75, 31.853553390593273], [89.5, 31.75], [89.25, 31.853553390593273], [89.0, 31.75], [88.75, 31.853553390593273], [88.5, 31.75], [87.96966991411009, 31.96966991411009], [87.82322330470336, 32.32322330470336]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.280903962861487}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.45864545707956}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.216731002873985, 11.087812706164925, 11.286577585130885, 9.248164886160168]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.08041441205819, 15.831677304630091, 15.85847353156754, 12.027016637145266]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.2437791476626865, 3.594769421070858, 3.6692168445623623, 3.046158273352825]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.8466434756941226, 5.280903962861487, 5.0721079371695055, 3.4982132060918616]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4936729889278713, 1.6919103376591698, 1.7783675280388165, 1.495762081275972]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7519899034124522, 2.196833669298742, 2.358737853787898, 1.7473359971448557]}}