{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:24.553264", "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": "2022-Apr-15_to_2022-Apr-22_109.0_11.5"}, "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": 2022040000506}, "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": "April 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 22 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 63250.065456517135}, "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": ["Viet Nam"]}, "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": 11.5}, "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": 109.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 108.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[109.53, 10.97], [109.0, 10.75], [108.47, 10.97], [108.25, 11.5], [108.38, 11.8], [107.97, 11.97], [107.75, 12.5], [107.85, 12.75], [107.75, 13.0], [107.96, 13.5], [107.75, 14.0], [107.97, 14.53], [108.32, 14.68], [108.47, 15.03], [109.0, 15.25], [109.53, 15.03], [109.75, 14.5], [109.65, 14.25], [109.7, 14.13], [110.0, 14.25], [110.25, 14.15], [110.5, 14.25], [110.75, 14.15], [111.0, 14.25], [111.53, 14.03], [111.75, 13.5], [111.65, 13.25], [111.75, 13.0], [111.53, 12.47], [111.18, 12.32], [111.03, 11.97], [110.68, 11.82], [110.53, 11.47], [110.0, 11.25], [109.75, 11.35], [109.68, 11.32], [109.53, 10.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.47, 12.03], [109.0, 12.25], [109.53, 12.03], [109.75, 11.5], [109.53, 10.97], [109.0, 10.75], [108.47, 10.97], [108.25, 11.5], [108.47, 12.03]]]]}, 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.594617594487886}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4758642275148062}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.151423343827616, 26.08005129461617, 26.35537641904409, 25.526081663779962, 25.43593353115716, 25.560287308061845, 26.186902588181738, 26.76858504204273]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.151423343827616, 25.93963183090517, 26.25217032258007, 23.24313241256806, 23.579724149360686, 23.303611338790915, 24.175829652169, 26.76858504204273]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0520488901775025, -1.191225500966425, 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-1.7540103896825807, -1.8112797397584373, -3.161184937825053, -2.873018196077558, -2.1830694183307107, -1.4440988050965302]}}