{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:07.348953", "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": "2013-Aug-08_to_2013-Aug-12_103.5_23.5"}, "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": 2013080000460}, "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": "August 08 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 12 2013"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 51328.69359553253}, "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", "Vietnam"]}, "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": []}, "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": 23.5}, "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": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 106.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.97, 24.03], [103.5, 24.25], [104.0, 24.04], [104.5, 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21.5], [105.53, 20.97], [105.0, 20.75], [104.75, 20.85], [104.5, 20.75], [103.97, 20.97], [103.75, 21.5], [103.85, 21.75], [103.82, 21.82], [103.47, 21.97], [103.32, 22.32], [102.97, 22.47], [102.75, 23.0], [102.85, 23.25], [102.75, 23.5], [102.97, 24.03]]]]}, "2013-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.97, 24.03], [103.5, 24.25], [104.0, 24.04], [104.5, 24.25], [104.75, 24.15], [105.0, 24.25], [105.53, 24.03], [105.68, 23.68], [105.75, 23.65], [106.0, 23.75], [106.25, 23.65], [106.5, 23.75], [107.03, 23.53], [107.25, 23.0], [107.03, 22.47], [106.5, 22.25], [106.25, 22.35], [106.18, 22.32], [106.03, 21.97], [105.68, 21.82], [105.65, 21.75], [105.75, 21.5], [105.53, 20.97], [105.0, 20.75], [104.75, 20.85], [104.5, 20.75], [103.97, 20.97], [103.75, 21.5], [103.85, 21.75], [103.82, 21.82], [103.47, 21.97], [103.32, 22.32], [102.97, 22.47], [102.75, 23.0], [102.85, 23.25], [102.75, 23.5], [102.97, 24.03]]]]}, "2013-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.97, 24.03], [103.5, 24.25], [104.03, 24.03], [104.18, 23.68], [104.53, 23.53], [104.75, 23.0], [104.53, 22.47], [104.0, 22.25], [103.75, 22.35], [103.5, 22.25], [102.97, 22.47], [102.75, 23.0], [102.85, 23.25], [102.75, 23.5], [102.97, 24.03]]]]}, "2013-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.5, 24.25], [104.03, 24.03], [104.25, 23.5], [104.03, 22.97], [103.5, 22.75], [102.97, 22.97], [102.75, 23.5], [102.97, 24.03], [103.5, 24.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5791134342134683}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.323323659204934}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.469862711398832, 22.52699279941544, 22.71901172642231, 20.59421384357745, 19.45649109946146]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.4198847983522, 19.291762744469963, 19.322541585088686, 19.157402845555623, 19.45649109946146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.499585049457017, -2.4455511004644057, -2.191027881840919, -1.6726582670493144, -1.283844861016064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5791134342134683, -3.2156873928912546, -2.782821063417998, -1.9236840639893558, -1.283844861016064]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.976123886453293, -1.9564959097742662, -1.7476569044627945, -1.6401509103800773, -1.4332418084578034]}, 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