{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:53.530420", "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-Aug-11_to_2025-Aug-15_119.5_8.0"}, "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": 2025080000431}, "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": "August 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 15 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": 58200.47032480381}, "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"]}, "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": ["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": 8.0}, "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": 119.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "119.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 121.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.0}, "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": [[[[120.68, 8.18], [120.75, 8.15], [121.0, 8.25], [121.53, 8.03], [121.75, 7.5], [121.65, 7.25], [121.75, 7.0], [121.53, 6.47], [121.0, 6.25], [120.75, 6.35], [120.5, 6.25], [120.25, 6.35], [120.0, 6.25], [119.75, 6.35], [119.5, 6.25], [119.25, 6.35], [119.0, 6.25], [118.47, 6.47], [118.32, 6.82], [117.97, 6.97], [117.75, 7.5], [117.85, 7.75], [117.82, 7.82], [117.75, 7.85], [117.5, 7.75], [116.97, 7.97], [116.75, 8.5], [116.97, 9.03], [117.5, 9.25], [117.75, 9.15], [118.0, 9.25], [118.25, 9.15], [118.5, 9.25], [119.0, 9.04], [119.5, 9.25], [120.03, 9.03], [120.18, 8.68], [120.53, 8.53], [120.68, 8.18]]]]}}, "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": {"2025-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.25, 7.5], [118.47, 8.03], [118.82, 8.18], [118.97, 8.53], [119.5, 8.75], [119.75, 8.65], [120.0, 8.75], [120.53, 8.53], [120.68, 8.18], [120.75, 8.15], [121.0, 8.25], [121.53, 8.03], [121.75, 7.5], [121.65, 7.25], [121.75, 7.0], [121.53, 6.47], [121.0, 6.25], [120.75, 6.35], [120.5, 6.25], [120.25, 6.35], [120.0, 6.25], [119.75, 6.35], [119.5, 6.25], [119.25, 6.35], [119.0, 6.25], [118.47, 6.47], [118.25, 7.0], [118.35, 7.25], [118.25, 7.5]]]]}, "2025-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.75, 8.0], [117.85, 8.25], [117.75, 8.5], [117.97, 9.03], [118.5, 9.25], [119.0, 9.04], [119.5, 9.25], [120.03, 9.03], [120.18, 8.68], [120.53, 8.53], [120.68, 8.18], [120.75, 8.15], [121.0, 8.25], [121.53, 8.03], [121.75, 7.5], [121.65, 7.25], [121.75, 7.0], [121.53, 6.47], [121.0, 6.25], [120.75, 6.35], [120.5, 6.25], [120.25, 6.35], [120.0, 6.25], [119.75, 6.35], [119.5, 6.25], [119.25, 6.35], [119.0, 6.25], [118.47, 6.47], [118.32, 6.82], [117.97, 6.97], [117.75, 7.5], [117.85, 7.75], [117.75, 8.0]]]]}, "2025-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.5, 7.75], [116.97, 7.97], [116.75, 8.5], [116.97, 9.03], [117.5, 9.25], [117.75, 9.15], [118.0, 9.25], [118.25, 9.15], [118.5, 9.25], [119.0, 9.04], [119.5, 9.25], [120.03, 9.03], [120.18, 8.68], [120.53, 8.53], [120.68, 8.18], [120.75, 8.15], [121.0, 8.25], [121.53, 8.03], [121.75, 7.5], [121.65, 7.25], [121.75, 7.0], [121.53, 6.47], [121.0, 6.25], [120.75, 6.35], [120.5, 6.25], [120.25, 6.35], [120.0, 6.25], [119.75, 6.35], [119.5, 6.25], [119.25, 6.35], [119.0, 6.25], [118.47, 6.47], [118.32, 6.82], [117.97, 6.97], [117.75, 7.5], [117.85, 7.75], [117.82, 7.82], [117.75, 7.85], [117.5, 7.75]]]]}, "2025-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.5, 7.75], [116.97, 7.97], [116.75, 8.5], [116.97, 9.03], [117.5, 9.25], [117.75, 9.15], [118.0, 9.25], [118.25, 9.15], [118.5, 9.25], [119.0, 9.04], [119.5, 9.25], [120.03, 9.03], [120.18, 8.68], [120.53, 8.53], [120.75, 8.0], [120.53, 7.47], [120.0, 7.25], [119.75, 7.35], [119.5, 7.25], [119.25, 7.35], [119.18, 7.32], [119.03, 6.97], [118.5, 6.75], [117.97, 6.97], [117.75, 7.5], [117.85, 7.75], [117.82, 7.82], [117.75, 7.85], [117.5, 7.75]]]]}, "2025-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.5, 7.75], [116.97, 7.97], [116.75, 8.5], [116.97, 9.03], [117.5, 9.25], [117.75, 9.15], [118.0, 9.25], [118.53, 9.03], [118.75, 8.5], [118.53, 7.97], [118.0, 7.75], [117.75, 7.85], [117.5, 7.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.3028560376745872}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9887823976801031}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.539429812961146, 26.500637533150496, 26.37354698850396, 26.360499035870646, 26.29687652587893]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.41695938110354, 26.299570973714196, 25.97566630045577, 25.66935501098635, 25.95337066650393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9340301974618134, -0.9769666369503779, -1.0442203064138138, -1.0037065039740583, -0.8239109538994569]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.058972867611999, -1.1031896730773951, -1.3028560376745872, -1.2242763320661538, -0.9144776657576017]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5795183568519393, -1.6443005894841878, -1.7456718746236173, -1.671305958040171, -1.4068426244887946]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.794577101298108, -1.8593353294829422, -2.2908051781060736, -1.9749921259745546, -1.5305390673872024]}}