{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:26:22.868914", "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-Jul-08_to_2021-Jul-14_114.0_34.5"}, "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": 2021070001975}, "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": "July 08 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 14 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 53169.27679115176}, "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": 34.5}, "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": 114.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 116.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.0}, "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": "Polygon", "coordinates": [[[114.5, 33.25], [114.25, 33.354], [114.0, 33.25], [113.47, 33.47], [113.25, 34.0], [113.354, 34.249], [113.354, 34.25], [113.323, 34.323], [113.25, 34.354], [113.0, 34.25], [112.47, 34.47], [112.25, 35.0], [112.47, 35.53], [113.0, 35.75], [113.25, 35.646], [113.5, 35.75], [113.75, 35.646], [113.823, 35.677], [113.97, 36.03], [114.5, 36.25], [114.75, 36.146], [114.875, 36.198], [114.75, 36.5], [114.97, 37.03], [115.5, 37.25], [115.75, 37.146], [116.0, 37.25], [116.53, 37.03], [116.75, 36.5], [116.646, 36.25], [116.75, 36.0], [116.543, 35.5], [116.75, 35.0], [116.646, 34.75], [116.75, 34.5], [116.53, 33.97], [116.0, 33.75], [115.75, 33.854], [115.677, 33.823], [115.53, 33.47], [115.0, 33.25], [114.75, 33.354], [114.5, 33.25]]]}}, "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": {"2021-07-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.25, 34.35355339059328], [113.0, 34.25], [112.46966991411009, 34.46966991411009], [112.25, 35.0], [112.46966991411009, 35.53033008588991], [113.0, 35.75], [113.25, 35.64644660940672], [113.5, 35.75], [113.75, 35.64644660940672], [113.82322330470336, 35.67677669529664], [113.96966991411009, 36.03033008588991], [114.5, 36.25], [114.75, 36.14644660940672], [114.875, 36.19822330470336], [114.75, 36.5], [114.96966991411009, 37.03033008588991], [115.5, 37.25], [115.75, 37.14644660940672], [116.0, 37.25], [116.53033008588991, 37.03033008588991], [116.75, 36.5], [116.64644660940672, 36.25], [116.75, 36.0], [116.53033008588991, 35.46966991411009], [116.17677669529664, 35.32322330470336], [116.14644660940672, 35.25], [116.25, 35.0], [116.03033008588991, 34.46966991411009], [115.67677669529664, 34.32322330470336], [115.53033008588991, 33.96966991411009], [115.0, 33.75], [114.5, 33.957106781186546], [114.0, 33.75], [113.46966991411009, 33.96966991411009], [113.32322330470336, 34.32322330470336], [113.25, 34.35355339059328]]]}, "2021-07-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.25, 34.35355339059328], [113.0, 34.25], [112.46966991411009, 34.46966991411009], [112.25, 35.0], [112.46966991411009, 35.53033008588991], [113.0, 35.75], [113.25, 35.64644660940672], [113.5, 35.75], [113.75, 35.64644660940672], [113.82322330470336, 35.67677669529664], [113.96966991411009, 36.03033008588991], [114.5, 36.25], [114.75, 36.14644660940672], [114.875, 36.19822330470336], [114.75, 36.5], [114.96966991411009, 37.03033008588991], [115.5, 37.25], [115.75, 37.14644660940672], [116.0, 37.25], [116.53033008588991, 37.03033008588991], [116.75, 36.5], [116.64644660940672, 36.25], [116.75, 36.0], [116.54289321881346, 35.5], [116.75, 35.0], [116.64644660940672, 34.75], [116.75, 34.5], [116.53033008588991, 33.96966991411009], [116.0, 33.75], [115.75, 33.85355339059328], [115.67677669529664, 33.82322330470336], [115.53033008588991, 33.46966991411009], [115.0, 33.25], [114.46966991411009, 33.46966991411009], [114.30177669529664, 33.875], [114.0, 33.75], [113.46966991411009, 33.96966991411009], [113.32322330470336, 34.32322330470336], [113.25, 34.35355339059328]]]}, "2021-07-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.25, 34.35355339059328], [113.0, 34.25], [112.46966991411009, 34.46966991411009], [112.25, 35.0], [112.46966991411009, 35.53033008588991], [113.0, 35.75], [113.25, 35.64644660940672], [113.5, 35.75], [113.75, 35.64644660940672], [113.82322330470336, 35.67677669529664], [113.96966991411009, 36.03033008588991], [114.5, 36.25], [114.75, 36.14644660940672], [114.875, 36.19822330470336], [114.75, 36.5], [114.96966991411009, 37.03033008588991], [115.5, 37.25], [115.75, 37.14644660940672], [116.0, 37.25], [116.53033008588991, 37.03033008588991], [116.75, 36.5], [116.64644660940672, 36.25], [116.75, 36.0], [116.54289321881346, 35.5], [116.75, 35.0], [116.64644660940672, 34.75], [116.75, 34.5], [116.53033008588991, 33.96966991411009], [116.0, 33.75], [115.75, 33.85355339059328], [115.67677669529664, 33.82322330470336], [115.53033008588991, 33.46966991411009], [115.0, 33.25], [114.46966991411009, 33.46966991411009], [114.30177669529664, 33.875], [114.0, 33.75], [113.46966991411009, 33.96966991411009], [113.32322330470336, 34.32322330470336], [113.25, 34.35355339059328]]]}, "2021-07-11T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[114.82322330470336, 34.67677669529664], [114.96966991411009, 35.03033008588991], [115.32322330470336, 35.17677669529664], [115.46966991411009, 35.53033008588991], [116.0, 35.75], [116.53033008588991, 35.53033008588991], [116.75, 35.0], [116.64644660940672, 34.75], [116.75, 34.5], [116.53033008588991, 33.96966991411009], [116.0, 33.75], [115.75, 33.85355339059328], [115.67677669529664, 33.82322330470336], [115.53033008588991, 33.46966991411009], [115.0, 33.25], [114.46966991411009, 33.46966991411009], [114.25, 34.0], [114.46966991411009, 34.53033008588991], [114.82322330470336, 34.67677669529664]]]}, "2021-07-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.35355339059328, 34.25], [113.25, 34.5], [113.46966991411009, 35.03033008588991], [114.0, 35.25], [114.25, 35.14644660940672], [114.5, 35.25], [115.03033008588991, 35.03033008588991], [115.25, 34.5], [115.14644660940672, 34.25], [115.25, 34.0], [115.03033008588991, 33.46966991411009], [114.5, 33.25], [114.25, 33.35355339059328], [114.0, 33.25], [113.46966991411009, 33.46966991411009], [113.25, 34.0], [113.35355339059328, 34.25]]]}, "2021-07-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.35355339059328, 34.25], [113.25, 34.5], [113.46966991411009, 35.03033008588991], [114.0, 35.25], [114.25, 35.14644660940672], [114.5, 35.25], [115.03033008588991, 35.03033008588991], [115.25, 34.5], [115.14644660940672, 34.25], [115.25, 34.0], [115.03033008588991, 33.46966991411009], [114.5, 33.25], [114.25, 33.35355339059328], [114.0, 33.25], [113.46966991411009, 33.46966991411009], [113.25, 34.0], [113.35355339059328, 34.25]]]}, "2021-07-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.35355339059328, 34.25], [113.25, 34.5], [113.46966991411009, 35.03033008588991], [114.0, 35.25], [114.25, 35.14644660940672], [114.5, 35.25], [115.03033008588991, 35.03033008588991], [115.25, 34.5], [115.14644660940672, 34.25], [115.25, 34.0], [115.03033008588991, 33.46966991411009], [114.5, 33.25], [114.25, 33.35355339059328], [114.0, 33.25], [113.46966991411009, 33.46966991411009], [113.25, 34.0], [113.35355339059328, 34.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.025144093169331}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.262443657413785}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.675502953588364, 32.09899749476193, 32.37011452245213, 31.3687981558831, 31.764122538406298, 32.72613326468195, 31.23278694700599]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.323839458224484, 33.47480301131037, 33.48639740944424, 31.736373008607075, 32.02712483873137, 33.106133582538746, 31.567808297277395]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.139316103489701, 4.598549551638835, 4.831528704296255, 3.8763928963055463, 4.15773450249074, 5.20961589043695, 3.6636185441723654]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.5301962265704674, 5.4603735744061055, 6.025144093169331, 4.315358173589345, 4.285789029787907, 5.465428428282507, 3.877082568304104]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.388573252438718, 1.9212244115659347, 1.952623910002777, 1.499958093210069, 1.5142633174722104, 1.8489012653170804, 1.297496769807742]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5748069983128121, 2.3514291299983467, 2.438251354706065, 1.6716661777814008, 1.5690541320431164, 1.92054609689061, 1.357644730899746]}}