{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:21.030744", "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-Sep-11_to_2020-Sep-15_114.5_5.0"}, "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": 2020090000315}, "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 11 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 15 2020"}, "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": 52358.715110762}, "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": ["Malaysia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["South China 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": 5.0}, "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": 114.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 111.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 114.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.5, 5.75], [115.03, 5.53], [115.25, 5.0], [115.03, 4.47], [114.5, 4.25], [113.97, 4.47], [113.75, 5.0], [113.97, 5.53], [114.5, 5.75]]]]}, "2020-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.47, 5.53], [112.0, 5.75], [112.25, 5.65], [112.5, 5.75], [113.0, 5.54], [113.32, 5.68], [113.47, 6.03], [114.0, 6.25], [114.25, 6.15], [114.5, 6.25], [115.03, 6.03], [115.25, 5.5], [115.15, 5.25], [115.25, 5.0], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.68, 3.32], [113.53, 2.97], [113.0, 2.75], [112.47, 2.97], [112.25, 3.5], [112.35, 3.75], [112.32, 3.82], [112.25, 3.85], [112.0, 3.75], [111.47, 3.97], [111.25, 4.5], [111.35, 4.75], [111.25, 5.0], [111.47, 5.53]]]]}, "2020-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.47, 5.53], [112.0, 5.75], [112.25, 5.65], [112.5, 5.75], [113.0, 5.54], [113.32, 5.68], [113.35, 5.75], [113.25, 6.0], [113.47, 6.53], [114.0, 6.75], [114.25, 6.65], [114.5, 6.75], [115.03, 6.53], [115.25, 6.0], [115.15, 5.75], [115.25, 5.5], [115.15, 5.25], [115.25, 5.0], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.68, 3.32], [113.53, 2.97], [113.0, 2.75], [112.47, 2.97], [112.25, 3.5], [112.35, 3.75], [112.32, 3.82], [112.25, 3.85], [112.0, 3.75], [111.47, 3.97], [111.25, 4.5], [111.35, 4.75], [111.25, 5.0], [111.47, 5.53]]]]}, "2020-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.47, 5.53], [112.0, 5.75], [112.25, 5.65], [112.5, 5.75], [113.0, 5.54], [113.32, 5.68], [113.35, 5.75], [113.25, 6.0], [113.47, 6.53], [114.0, 6.75], [114.25, 6.65], [114.5, 6.75], [115.03, 6.53], [115.25, 6.0], [115.15, 5.75], [115.25, 5.5], [115.15, 5.25], [115.25, 5.0], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.68, 3.32], [113.53, 2.97], [113.0, 2.75], [112.47, 2.97], [112.25, 3.5], [112.35, 3.75], [112.32, 3.82], [112.25, 3.85], [112.0, 3.75], [111.47, 3.97], [111.25, 4.5], [111.35, 4.75], [111.25, 5.0], [111.47, 5.53]]]]}, "2020-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 5.47], [113.25, 6.0], [113.47, 6.53], [114.0, 6.75], [114.25, 6.65], [114.5, 6.75], [115.03, 6.53], [115.25, 6.0], [115.03, 5.47], [114.5, 5.25], [114.25, 5.35], [114.0, 5.25], [113.47, 5.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.5940340782117914}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1623120892129475}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.4844451445407, 26.337630678494293, 26.317283183657878, 26.142031300256747, 26.726938339194135]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.4844451445407, 25.86200998449567, 25.7918471817585, 25.6162004386876, 26.693335311231692]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0527708797310993, -1.085807448223011, -1.1213470515597872, -1.316034197815026, -0.8324323983125907]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0527708797310993, -1.3618147701673138, -1.492328550447894, -1.5940340782117914, -0.8739453159166146]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3832495728217022, -1.570314503311932, -1.658634379424479, -1.9937591741414296, -1.2952851208155125]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3832495728217022, -1.8353353184337562, -2.071504219653958, -2.4765514461097893, -1.3244477826782957]}}