{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:51.615507", "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": "2025-Jan-01_to_2025-Jan-05_118.0_-9.0"}, "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": 2025010000040}, "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": "January 01 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 05 2025"}, "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": 57961.96091068212}, "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"]}, "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": ["Flores Sea", "Indian Ocean", "Savu 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": -9.0}, "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": 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": 115.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[116.75, -8.35], [117.0, -8.25], [117.25, -8.35], [117.32, -8.32], [117.47, -7.97], [118.0, -7.75], [118.25, -7.85], [118.5, -7.75], [119.03, -7.97], [119.25, -8.5], [119.15, -8.75], [119.25, -9.0], [119.15, -9.25], [119.25, -9.5], [119.03, -10.03], [118.68, -10.18], [118.53, -10.53], [118.18, -10.68], [118.03, -11.03], [117.5, -11.25], [116.97, -11.03], [116.82, -10.68], [116.47, -10.53], [116.25, -10.0], [116.35, -9.75], [116.32, -9.68], [116.25, -9.65], [116.0, -9.75], [115.75, -9.65], [115.5, -9.75], [115.25, -9.65], [115.0, -9.75], [114.47, -9.53], [114.25, -9.0], [114.35, -8.75], [114.25, -8.5], [114.47, -7.97], [115.0, -7.75], [115.53, -7.97], [115.68, -8.32], [115.75, -8.35], [116.0, -8.25], [116.25, -8.35], [116.5, -8.25], [116.75, -8.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia", "N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.97, -9.53], [115.75, -9.0], [115.97, -8.47], [116.5, -8.25], [117.03, -8.47], [117.18, -8.82], [117.25, -8.85], [117.32, -8.82], [117.47, -8.47], [118.0, -8.25], [118.25, -8.35], [118.5, -8.25], [119.03, -8.47], [119.25, -9.0], [119.15, -9.25], [119.25, -9.5], [119.03, -10.03], [118.68, -10.18], [118.53, -10.53], [118.18, -10.68], [118.03, -11.03], [117.5, -11.25], [116.97, -11.03], [116.82, -10.68], [116.47, -10.53], [116.25, -10.0], [116.35, -9.75], [116.32, -9.68], [115.97, -9.53]]]]}, "2025-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.75, -9.0], [115.97, -8.47], [116.5, -8.25], [116.75, -8.35], [117.0, -8.25], [117.25, -8.35], [117.32, -8.32], [117.47, -7.97], [118.0, -7.75], [118.25, -7.85], [118.5, -7.75], [119.03, -7.97], [119.25, -8.5], [119.15, -8.75], [119.25, -9.0], [119.15, -9.25], [119.25, -9.5], [119.03, -10.03], [118.68, -10.18], [118.53, -10.53], [118.18, -10.68], [118.03, -11.03], [117.5, -11.25], [116.97, -11.03], [116.82, -10.68], [116.47, -10.53], [116.25, -10.0], [116.35, -9.75], [116.32, -9.68], [115.97, -9.53], [115.75, -9.0]]], [[[115.0, -9.25], [114.47, -9.03], [114.25, -8.5], [114.47, -7.97], [115.0, -7.75], [115.53, -7.97], [115.75, -8.5], [115.53, -9.03], [115.0, -9.25]]]]}, "2025-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.25, -8.5], [114.47, -7.97], [115.0, -7.75], [115.53, -7.97], [115.68, -8.32], [115.75, -8.35], [116.0, -8.25], [116.25, -8.35], [116.5, -8.25], [116.75, -8.35], [117.0, -8.25], [117.25, -8.35], [117.32, -8.32], [117.47, -7.97], [118.0, -7.75], [118.25, -7.85], [118.5, -7.75], [119.03, -7.97], [119.25, -8.5], [119.15, -8.75], [119.25, -9.0], [119.15, -9.25], [119.25, -9.5], [119.03, -10.03], [118.68, -10.18], [118.53, -10.53], [118.18, -10.68], [118.03, -11.03], [117.5, -11.25], [116.97, -11.03], [116.82, -10.68], [116.47, -10.53], [116.25, -10.0], [116.35, -9.75], [116.32, -9.68], [116.25, -9.65], [116.0, -9.75], [115.75, -9.65], [115.5, -9.75], [115.25, -9.65], [115.0, -9.75], [114.47, -9.53], [114.25, -9.0], [114.35, -8.75], [114.25, -8.5]]]]}, "2025-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.25, -8.5], [114.47, -7.97], [115.0, -7.75], [115.53, -7.97], [115.68, -8.32], [115.75, -8.35], [116.0, -8.25], [116.25, -8.35], [116.5, -8.25], [116.75, -8.35], [117.0, -8.25], [117.25, -8.35], [117.32, -8.32], [117.47, -7.97], [118.0, -7.75], [118.25, -7.85], [118.5, -7.75], [119.03, -7.97], [119.25, -8.5], [119.15, -8.75], [119.25, -9.0], [119.03, -9.53], [118.5, -9.75], [118.25, -9.65], [118.0, -9.75], [117.75, -9.65], [117.5, -9.75], [117.25, -9.65], [117.0, -9.75], [116.75, -9.65], [116.5, -9.75], [116.25, -9.65], [116.0, -9.75], [115.75, -9.65], [115.5, -9.75], [115.25, -9.65], [115.0, -9.75], [114.47, -9.53], [114.25, -9.0], [114.35, -8.75], [114.25, -8.5]]]]}, "2025-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.0, -9.75], [114.47, -9.53], [114.25, -9.0], [114.47, -8.47], [115.0, -8.25], [115.25, -8.35], [115.5, -8.25], [115.75, -8.35], [116.0, -8.25], [116.25, -8.35], [116.5, -8.25], [116.75, -8.35], [117.0, -8.25], [117.25, -8.35], [117.32, -8.32], [117.47, -7.97], [118.0, -7.75], [118.25, -7.85], [118.5, -7.75], [119.03, -7.97], [119.25, -8.5], [119.03, -9.03], [118.68, -9.18], [118.53, -9.53], [118.0, -9.75], [117.75, -9.65], [117.5, -9.75], [117.25, -9.65], [117.0, -9.75], [116.75, -9.65], [116.5, -9.75], [116.25, -9.65], [116.0, -9.75], [115.75, -9.65], [115.5, -9.75], [115.25, -9.65], [115.0, -9.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4566877553178301}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0442489014004916}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.503938640247725, 25.928899383544945, 25.823612065900818, 25.631602801698648, 25.68053984465422]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.131431833903036, 24.82724533081057, 24.66528472900393, 24.491118367513025, 24.762562052408896]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9062673338128207, -1.088240872108841, -1.1739064302477715, -0.946772974292902, -0.980100886091154]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0262367929278184, -1.2900314599536387, -1.4566877553178301, -1.1465621371565362, -1.2959340841691755]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5072825142985342, -1.824649515604736, -1.9916724845454379, -1.6773646769398136, -1.71697005143711]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.658067854133853, -2.112816647784597, -2.651234289738978, -2.0434806728812176, -2.4544925769990944]}}