{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:02.656799", "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-28_to_2025-Feb-01_110.5_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": 2025010000778}, "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 28 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 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": 64897.2184274421}, "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", "Malaysia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": []}, "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": 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": 109.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 112.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[109.47, 2.03], [110.0, 2.25], [110.25, 2.15], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.18, 2.68], [112.53, 2.53], [112.75, 2.0], [112.65, 1.75], [112.75, 1.5], [112.65, 1.25], [112.75, 1.0], [112.53, 0.47], [112.18, 0.32], [112.03, -0.03], [111.5, -0.25], [111.25, -0.15], [111.18, -0.18], [111.03, -0.53], [110.5, -0.75], [110.25, -0.65], [110.0, -0.75], [109.47, -0.53], [109.32, -0.18], [108.97, -0.03], [108.75, 0.5], [108.85, 0.75], [108.75, 1.0], [108.97, 1.53], [109.32, 1.68], [109.47, 2.03]]]]}}, "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": {"2025-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 1.0], [108.97, 1.53], [109.32, 1.68], [109.47, 2.03], [110.0, 2.25], [110.25, 2.15], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.18, 2.68], [112.53, 2.53], [112.75, 2.0], [112.53, 1.47], [112.18, 1.32], [112.15, 1.25], [112.25, 1.0], [112.03, 0.47], [111.68, 0.32], [111.53, -0.03], [111.18, -0.18], [111.03, -0.53], [110.5, -0.75], [110.25, -0.65], [110.0, -0.75], [109.47, -0.53], [109.32, -0.18], [108.97, -0.03], [108.75, 0.5], [108.85, 0.75], [108.75, 1.0]]]]}, "2025-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 1.0], [108.97, 1.53], [109.32, 1.68], [109.47, 2.03], [110.0, 2.25], [110.25, 2.15], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.18, 2.68], [112.53, 2.53], [112.75, 2.0], [112.65, 1.75], [112.75, 1.5], [112.65, 1.25], [112.75, 1.0], [112.53, 0.47], [112.18, 0.32], [112.03, -0.03], [111.5, -0.25], [111.25, -0.15], [111.18, -0.18], [111.03, -0.53], [110.5, -0.75], [110.25, -0.65], [110.0, -0.75], [109.47, -0.53], [109.32, -0.18], [108.97, -0.03], [108.75, 0.5], [108.85, 0.75], [108.75, 1.0]]]]}, "2025-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 1.0], [108.97, 1.53], [109.32, 1.68], [109.47, 2.03], [110.0, 2.25], [110.25, 2.15], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.85, 2.25], [110.75, 2.5], [110.97, 3.03], [111.5, 3.25], [112.03, 3.03], [112.18, 2.68], [112.53, 2.53], [112.75, 2.0], [112.65, 1.75], [112.75, 1.5], [112.65, 1.25], [112.75, 1.0], [112.53, 0.47], [112.18, 0.32], [112.03, -0.03], [111.5, -0.25], [111.25, -0.15], [111.18, -0.18], [111.03, -0.53], [110.5, -0.75], [110.25, -0.65], [110.0, -0.75], [109.47, -0.53], [109.32, -0.18], [108.97, -0.03], [108.75, 0.5], [108.85, 0.75], [108.75, 1.0]]]]}, "2025-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 1.0], [108.97, 1.53], [109.32, 1.68], [109.47, 2.03], [110.0, 2.25], [110.25, 2.15], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.97, 2.53], [111.5, 2.75], [112.03, 2.53], [112.18, 2.18], [112.53, 2.03], [112.75, 1.5], [112.65, 1.25], [112.75, 1.0], [112.53, 0.47], [112.18, 0.32], [112.03, -0.03], [111.5, -0.25], [111.25, -0.15], [111.0, -0.25], [110.75, -0.15], [110.5, -0.25], [110.25, -0.15], [110.0, -0.25], [109.75, -0.15], [109.5, -0.25], [108.97, -0.03], [108.75, 0.5], [108.85, 0.75], [108.75, 1.0]]]]}, "2025-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.47, 0.97], [109.25, 1.5], [109.47, 2.03], [110.0, 2.25], [110.25, 2.15], [110.5, 2.25], [110.75, 2.15], [111.0, 2.25], [111.25, 2.15], [111.5, 2.25], [111.75, 2.15], [112.0, 2.25], [112.53, 2.03], [112.75, 1.5], [112.53, 0.97], [112.0, 0.75], [111.75, 0.85], [111.68, 0.82], [111.53, 0.47], [111.0, 0.25], [110.75, 0.35], [110.5, 0.25], [109.97, 0.47], [109.82, 0.82], [109.47, 0.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.128858286068578}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5189767304220578}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.028995768229265, 23.697744835747585, 24.31788890778074, 23.81999635883409, 24.331709798177144]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.406355794270837, 21.0494158426921, 21.82864659627279, 21.29593175252279, 23.097090657552087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.534549361433477, -1.869270762263005, -1.2103513583440824, -1.6055450816373042, -1.1436894184381816]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7943234743322591, -2.128858286068578, -1.4445209520394542, -2.01977606068931, -1.4011228086113192]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.034356503272026, -2.4372373646379537, -1.5656254724684966, -2.0966942203763357, -1.4927103524384915]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.424263486207881, -2.879199950871736, -1.8309008082464382, -2.6978034391152916, -1.8287605392740642]}}