{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:22.893573", "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-Oct-04_to_2025-Oct-07_121.0_6.0"}, "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": 2025100000149}, "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": "October 04 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2025"}, "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": 64678.222699709295}, "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": ["Celebes 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": 6.0}, "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": 121.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 119.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 123.25}, "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": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 5.53], [120.38, 5.7], [120.25, 6.0], [120.47, 6.53], [121.0, 6.75], [121.53, 6.53], [121.68, 6.18], [122.03, 6.03], [122.18, 5.68], [122.25, 5.65], [122.5, 5.75], [122.75, 5.65], [123.0, 5.75], [123.53, 5.53], [123.75, 5.0], [123.54, 4.5], [123.75, 4.0], [123.53, 3.47], [123.0, 3.25], [122.75, 3.35], [122.5, 3.25], [122.2, 3.37], [122.03, 2.97], [121.5, 2.75], [121.25, 2.85], [121.0, 2.75], [120.75, 2.85], [120.5, 2.75], [119.97, 2.97], [119.75, 3.5], [119.96, 4.0], [119.75, 4.5], [119.85, 4.75], [119.75, 5.0], [119.97, 5.53]]]]}, "2025-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.25, 6.5], [119.47, 7.03], [120.0, 7.25], [120.5, 7.04], [121.0, 7.25], [121.53, 7.03], [121.75, 6.5], [121.65, 6.25], [121.68, 6.18], [122.03, 6.03], [122.18, 5.68], [122.25, 5.65], [122.5, 5.75], [122.75, 5.65], [123.0, 5.75], [123.53, 5.53], [123.75, 5.0], [123.54, 4.5], [123.75, 4.0], [123.53, 3.47], [123.0, 3.25], [122.75, 3.35], [122.5, 3.25], [122.2, 3.37], [122.03, 2.97], [121.5, 2.75], [121.25, 2.85], [121.0, 2.75], [120.75, 2.85], [120.5, 2.75], [119.97, 2.97], [119.75, 3.5], [119.96, 4.0], [119.75, 4.5], [119.85, 4.75], [119.75, 5.0], [119.96, 5.5], [119.82, 5.82], [119.47, 5.97], [119.25, 6.5]]]]}, "2025-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.25, 6.5], [119.47, 7.03], [120.0, 7.25], [120.5, 7.04], [121.0, 7.25], [121.53, 7.03], [121.75, 6.5], [121.65, 6.25], [121.68, 6.18], [122.03, 6.03], [122.18, 5.68], [122.25, 5.65], [122.5, 5.75], [122.75, 5.65], [123.0, 5.75], [123.53, 5.53], [123.75, 5.0], [123.54, 4.5], [123.75, 4.0], [123.53, 3.47], [123.0, 3.25], [122.75, 3.35], [122.5, 3.25], [122.2, 3.37], [122.03, 2.97], [121.5, 2.75], [121.25, 2.85], [121.0, 2.75], [120.75, 2.85], [120.5, 2.75], [119.97, 2.97], [119.75, 3.5], [119.96, 4.0], [119.75, 4.5], [119.85, 4.75], [119.75, 5.0], [119.96, 5.5], [119.82, 5.82], [119.47, 5.97], [119.25, 6.5]]]]}, "2025-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.25, 6.5], [119.47, 7.03], [120.0, 7.25], [120.5, 7.04], [121.0, 7.25], [121.53, 7.03], [121.75, 6.5], [121.65, 6.25], [121.68, 6.18], [122.03, 6.03], [122.18, 5.68], [122.25, 5.65], [122.5, 5.75], [123.03, 5.53], [123.25, 5.0], [123.03, 4.47], [122.5, 4.25], [122.25, 4.35], [122.0, 4.25], [121.47, 4.47], [121.32, 4.82], [120.97, 4.97], [120.82, 5.32], [120.75, 5.35], [120.5, 5.25], [119.97, 5.47], [119.82, 5.82], [119.47, 5.97], [119.25, 6.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4784718548449973}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0255708841819091}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.391525805437993, 26.5398083762517, 26.328222014412063, 26.345355696905244]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.214790598551474, 26.241112009684286, 25.548266347249353, 25.90902989705404]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.076766742941525, -0.9085219924736169, -1.1224264392979155, -0.9545044000054678]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.309898992653416, -1.2441789668828847, -1.4784718548449973, -1.1256504771064328]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8199084870095588, -1.5474279035148801, -1.9189229007833757, -1.6981130910562736]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1252935302836207, -1.9576653133316908, -2.7657387374090088, -2.0377570054279532]}}