{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:51.863500", "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-Sep-08_to_2025-Sep-12_110.5_-3.5"}, "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": 2025090000233}, "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": "September 08 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 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": 67864.40771475651}, "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": ["Java 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": -3.5}, "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": 110.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 109.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 113.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.5, -2.75], [114.03, -2.97], [114.25, -3.5], [114.03, -4.03], [113.5, -4.25], [112.97, -4.03], [112.75, -3.5], [112.97, -2.97], [113.5, -2.75]]]]}, "2025-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, -3.53], [108.75, -3.0], [108.97, -2.47], [109.5, -2.25], [109.75, -2.35], [110.0, -2.25], [110.25, -2.35], [110.5, -2.25], [110.75, -2.35], [111.0, -2.25], [111.25, -2.35], [111.5, -2.25], [112.03, -2.47], [112.18, -2.82], [112.25, -2.85], [112.5, -2.75], [112.75, -2.85], [113.0, -2.75], [113.25, -2.85], [113.5, -2.75], [114.03, -2.97], [114.25, -3.5], [114.15, -3.75], [114.25, -4.0], [114.03, -4.53], [113.68, -4.68], [113.53, -5.03], [113.0, -5.25], [112.75, -5.15], [112.5, -5.25], [112.25, -5.15], [112.0, -5.25], [111.47, -5.03], [111.32, -4.68], [110.97, -4.53], [110.82, -4.18], [110.75, -4.15], [110.5, -4.25], [109.97, -4.03], [109.82, -3.68], [109.75, -3.65], [109.5, -3.75], [108.97, -3.53]]]]}, "2025-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, -2.47], [109.5, -2.25], [109.75, -2.35], [110.0, -2.25], [110.25, -2.35], [110.5, -2.25], [110.75, -2.35], [111.0, -2.25], [111.25, -2.35], [111.5, -2.25], [112.03, -2.47], [112.18, -2.82], [112.25, -2.85], [112.5, -2.75], [112.75, -2.85], [113.0, -2.75], [113.25, -2.85], [113.5, -2.75], [114.03, -2.97], [114.25, -3.5], [114.15, -3.75], [114.25, -4.0], [114.03, -4.53], [113.68, -4.68], [113.53, -5.03], [113.0, -5.25], [112.75, -5.15], [112.5, -5.25], [112.25, -5.15], [112.0, -5.25], [111.47, -5.03], [111.32, -4.68], [110.97, -4.53], [110.82, -4.18], [110.75, -4.15], [110.5, -4.25], [110.25, -4.15], [110.0, -4.25], [109.75, -4.15], [109.5, -4.25], [108.97, -4.03], [108.75, -3.5], [108.85, -3.25], [108.75, -3.0], [108.97, -2.47]]]]}, "2025-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, -2.47], [109.5, -2.25], [109.75, -2.35], [110.0, -2.25], [110.25, -2.35], [110.5, -2.25], [110.75, -2.35], [111.0, -2.25], [111.25, -2.35], [111.5, -2.25], [112.03, -2.47], [112.18, -2.82], [112.25, -2.85], [112.5, -2.75], [112.75, -2.85], [113.0, -2.75], [113.53, -2.97], [113.68, -3.32], [114.03, -3.47], [114.25, -4.0], [114.03, -4.53], [113.68, -4.68], [113.53, -5.03], [113.0, -5.25], [112.75, -5.15], [112.5, -5.25], [112.25, -5.15], [112.0, -5.25], [111.47, -5.03], [111.32, -4.68], [110.97, -4.53], [110.82, -4.18], [110.75, -4.15], [110.5, -4.25], [110.25, -4.15], [110.0, -4.25], [109.75, -4.15], [109.5, -4.25], [108.97, -4.03], [108.75, -3.5], [108.85, -3.25], [108.75, -3.0], [108.97, -2.47]]]]}, "2025-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, -2.47], [109.5, -2.25], [109.75, -2.35], [110.0, -2.25], [110.25, -2.35], [110.5, -2.25], [110.75, -2.35], [111.0, -2.25], [111.53, -2.47], [111.75, -3.0], [111.53, -3.53], [111.18, -3.68], [111.03, -4.03], [110.5, -4.25], [110.25, -4.15], [110.0, -4.25], [109.75, -4.15], [109.5, -4.25], [108.97, -4.03], [108.75, -3.5], [108.85, -3.25], [108.75, -3.0], [108.97, -2.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.277155078330395}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8363801374111196}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.51429392496749, 26.41128031412768, 26.14765539458307, 26.395664287748787, 26.365929449172256]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.51429392496749, 26.03412780761721, 25.705261484781943, 26.212407684326195, 26.110035196940146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.641178466230997, -0.7192833544235014, -1.005454035914454, -0.7732398634871331, -0.8568740397343829]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.641178466230997, -0.9446536233867278, -1.277155078330395, -0.9118125597501034, -0.9879464439620165]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.34138440900456, -1.5299843355783465, -2.159504360718817, -1.659415883686828, -1.7979339277408786]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.34138440900456, -1.959721482290917, -2.7191766722523862, -1.9751259905955894, -2.0432806601602267]}}