{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:03.186519", "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": "2018-Sep-02_to_2018-Sep-06_121.0_38.0"}, "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": 2018090001388}, "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 02 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 06 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 64989.665836347085}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "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": ["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": 38.0}, "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": 121.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 121.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.82, 38.68], [119.97, 39.03], [120.5, 39.25], [121.03, 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37.85], [118.5, 37.75], [118.25, 37.85], [118.0, 37.75], [117.47, 37.97]]]]}, "2018-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.47, 37.97], [117.25, 38.5], [117.47, 39.03], [118.0, 39.25], [118.25, 39.15], [118.32, 39.18], [118.47, 39.53], [118.82, 39.68], [118.97, 40.03], [119.32, 40.18], [119.47, 40.53], [120.0, 40.75], [120.25, 40.65], [120.32, 40.68], [120.47, 41.03], [121.0, 41.25], [121.53, 41.03], [121.68, 40.68], [122.03, 40.53], [122.25, 40.0], [122.04, 39.5], [122.25, 39.0], [122.04, 38.5], [122.25, 38.0], [122.03, 37.47], [121.5, 37.25], [121.25, 37.35], [121.0, 37.25], [120.75, 37.35], [120.68, 37.32], [120.53, 36.97], [120.0, 36.75], [119.75, 36.85], [119.5, 36.75], [118.97, 36.97], [118.75, 37.5], [118.88, 37.8], [118.75, 37.85], [118.5, 37.75], [118.25, 37.85], [118.0, 37.75], [117.47, 37.97]]]]}, "2018-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.47, 37.97], [117.25, 38.5], [117.47, 39.03], [118.0, 39.25], 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"max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.1363019160259}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8383777966819776}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.2953587359151, 25.29487397896787, 25.237525581243744, 25.42570432606317, 24.763217172368456]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.120038360311185, 26.4224096332901, 26.145728977715237, 26.101560566089972, 24.799524417153975]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.425828142252063, 1.7194774198068155, 1.7980956057092414, 2.1132812260840157, 1.6219893515545512]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5480895916418262, 2.2671909924878264, 2.3549466064145577, 3.1363019160259, 1.7236323976276253]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.270191965020688, 1.4426791599158049, 1.451019327044273, 1.6494857885468743, 1.423492519906927]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4564565958022675, 1.7390225142282203, 1.812987220656168, 2.183038012657254, 1.5388109459969663]}}