{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:04.028340", "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": "2011-Dec-05_to_2011-Dec-10_118.0_9.5"}, "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": 2011120000365}, "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": "December 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 112249.86479929376}, "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": ["Philippines"]}, "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", "Sulu 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": 9.5}, "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": 118.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.0, 10.25], [118.53, 10.03], [118.75, 9.5], [118.53, 8.97], [118.0, 8.75], [117.47, 8.97], [117.25, 9.5], [117.47, 10.03], [118.0, 10.25]]]]}, "2011-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.35, 10.25], [117.25, 10.5], [117.35, 10.75], [117.25, 11.0], [117.47, 11.53], [118.0, 11.75], [118.53, 11.53], [118.68, 11.18], [119.03, 11.03], [119.2, 10.63], [119.5, 10.75], [120.03, 10.53], [120.25, 10.0], [120.03, 9.47], [119.68, 9.32], [119.53, 8.97], [119.0, 8.75], [118.5, 8.96], [118.0, 8.75], [117.47, 8.97], [117.25, 9.5], [117.35, 9.75], [117.25, 10.0], [117.35, 10.25]]]]}, "2011-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.25, 10.0], [117.35, 10.25], [117.25, 10.5], [117.35, 10.75], [117.25, 11.0], [117.47, 11.53], [117.82, 11.68], [117.97, 12.03], [118.5, 12.25], [118.75, 12.15], [119.0, 12.25], [119.25, 12.15], [119.5, 12.25], [120.03, 12.03], [120.18, 11.68], [120.53, 11.53], [120.68, 11.18], [121.03, 11.03], [121.18, 10.68], [121.53, 10.53], [121.68, 10.18], [122.03, 10.03], 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10.82], [119.03, 10.47], [118.5, 10.25], [118.25, 10.35], [118.0, 10.25], [117.47, 10.47], [117.25, 11.0], [117.35, 11.25], [117.32, 11.32], [116.97, 11.47], [116.75, 12.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6080241715272905}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.935340549764022}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.326868402246134, 26.338996550588377, 26.240511012178217, 26.275375237757657, 26.172123177141145, 26.3960630454348]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.326868402246134, 26.218946967784348, 25.309006178569973, 25.457805892708905, 25.42622759516547, 26.093536014683025]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8105835052815564, -0.8584497093148755, -0.8891937641068944, -0.9216707012013585, -1.0188004236119061, -0.9117532076278494]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8105835052815564, -0.9486114485878829, -1.4517225766739443, -1.2256472426938103, -1.6080241715272905, -1.0992445772979522]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4335446200292339, -1.5066700028994156, -1.642925077231662, -1.7812409783329861, -1.9972248366693697, -1.8229604702973334]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4335446200292339, -1.7454338255029849, -2.126085403673148, -2.7114448147429884, -3.0643920185054587, -2.2931467703338733]}}