{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:00.617442", "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": "2021-Jun-12_to_2021-Jun-15_129.5_1.5"}, "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": 2021060000482}, "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": "June 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 71084.43441038982}, "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": ["Indonesia"]}, "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": ["Halmahera Sea", "Molukka Sea", "North Pacific Ocean"]}, "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": 1.5}, "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": 129.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 130.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.47, 0.97], [128.25, 1.5], [128.47, 2.03], [129.0, 2.25], [129.25, 2.15], [129.32, 2.18], [129.47, 2.53], [130.0, 2.75], [130.25, 2.65], [130.5, 2.75], [131.03, 2.53], [131.25, 2.0], [131.03, 1.47], [130.68, 1.32], [130.53, 0.97], [130.0, 0.75], [129.75, 0.85], [129.5, 0.75], [129.25, 0.85], [129.0, 0.75], [128.47, 0.97]]]]}, "2021-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.5, 0.75], [127.75, 0.65], [128.0, 0.75], [128.25, 0.65], [128.32, 0.68], [128.35, 0.75], [128.25, 1.0], [128.35, 1.25], [128.25, 1.5], [128.47, 2.03], [129.0, 2.25], [129.25, 2.15], [129.32, 2.18], [129.47, 2.53], [130.0, 2.75], [130.25, 2.65], [130.5, 2.75], [131.03, 2.53], [131.25, 2.0], [131.03, 1.47], [130.68, 1.32], [130.54, 1.0], [130.75, 0.5], [130.54, 0.0], [130.75, -0.5], [130.53, -1.03], [130.18, -1.18], [130.03, -1.53], [129.5, -1.75], [129.25, -1.65], [129.0, -1.75], [128.75, -1.65], [128.5, -1.75], [127.97, -1.53], [127.8, -1.13], [127.5, -1.25], [127.25, -1.15], [127.0, -1.25], [126.47, -1.03], [126.25, -0.5], [126.47, 0.03], [126.82, 0.18], [126.97, 0.53], [127.5, 0.75]]]]}, "2021-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.5, 0.75], [127.75, 0.65], [128.0, 0.75], [128.25, 0.65], [128.32, 0.68], [128.35, 0.75], [128.25, 1.0], [128.35, 1.25], [128.25, 1.5], [128.47, 2.03], [129.0, 2.25], [129.25, 2.15], [129.32, 2.18], [129.47, 2.53], [130.0, 2.75], [130.25, 2.65], [130.5, 2.75], [131.03, 2.53], [131.25, 2.0], [131.03, 1.47], [130.68, 1.32], [130.54, 1.0], [130.75, 0.5], [130.54, 0.0], [130.75, -0.5], [130.53, -1.03], [130.18, -1.18], [130.03, -1.53], [129.5, -1.75], [129.25, -1.65], [129.0, -1.75], [128.75, -1.65], [128.5, -1.75], [127.97, -1.53], [127.8, -1.13], [127.5, -1.25], [127.25, -1.15], [127.0, -1.25], [126.47, -1.03], [126.25, -0.5], [126.47, 0.03], [126.82, 0.18], [126.97, 0.53], [127.5, 0.75]]]]}, "2021-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.5, 0.75], [127.75, 0.65], [128.0, 0.75], [128.25, 0.65], [128.32, 0.68], [128.35, 0.75], [128.25, 1.0], [128.47, 1.53], [128.82, 1.68], [128.97, 2.03], [129.5, 2.25], [130.03, 2.03], [130.25, 1.5], [130.15, 1.25], [130.18, 1.18], [130.53, 1.03], [130.75, 0.5], [130.54, 0.0], [130.75, -0.5], [130.53, -1.03], [130.18, -1.18], [130.03, -1.53], [129.5, -1.75], [129.25, -1.65], [129.0, -1.75], [128.75, -1.65], [128.5, -1.75], [127.97, -1.53], [127.8, -1.13], [127.5, -1.25], [127.25, -1.15], [127.0, -1.25], [126.47, -1.03], [126.25, -0.5], [126.47, 0.03], [126.82, 0.18], [126.97, 0.53], [127.5, 0.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.1388067791226035}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8328432024399717}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.282747447524116, 26.076532232776913, 25.914181802268843, 25.997314748660244]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.19347417984119, 25.076428398389396, 24.894383248182805, 25.056173259837635]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7686859610142619, -0.7839734360032614, -0.9319395784686633, -0.7889260543617076]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8371168938246569, -0.96501977089207, -1.1388067791226035, -0.9035770125167915]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3024916573548406, -1.4372601732004104, -1.7039890068578105, -1.4543661272364057]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.411969764855963, -1.7345538894487127, -2.16808440514919, -1.723444743063243]}}