{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:31.521583", "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-Feb-24_to_2025-Feb-26_100.5_15.5"}, "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": 2025020000523}, "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": "February 24 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 110287.67632953553}, "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": ["Thailand"]}, "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": []}, "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": 15.5}, "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": 100.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "100.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 102.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[98.82, 15.68], [98.97, 16.03], [99.32, 16.18], [99.35, 16.25], [99.32, 16.32], [98.97, 16.47], [98.75, 17.0], [98.97, 17.53], [99.5, 17.75], [100.03, 17.53], [100.18, 17.18], [100.25, 17.15], [100.5, 17.25], [100.75, 17.15], [100.82, 17.18], [100.85, 17.25], [100.75, 17.5], [100.97, 18.03], [101.5, 18.25], [101.75, 18.15], [102.0, 18.25], [102.53, 18.03], [102.68, 17.68], [103.03, 17.53], [103.25, 17.0], [103.15, 16.75], [103.25, 16.5], [103.03, 15.97], [102.68, 15.82], [102.53, 15.47], [102.0, 15.25], [101.75, 15.35], [101.68, 15.32], [101.53, 14.97], [101.18, 14.82], [101.03, 14.47], [100.68, 14.32], [100.65, 14.25], [100.75, 14.0], [100.65, 13.75], [100.75, 13.5], [100.65, 13.25], [100.75, 13.0], [100.65, 12.75], [100.75, 12.5], [100.65, 12.25], [100.75, 12.0], [100.53, 11.47], [100.0, 11.25], [99.47, 11.47], [99.32, 11.82], [98.97, 11.97], [98.75, 12.5], [98.85, 12.75], [98.75, 13.0], [98.85, 13.25], [98.75, 13.5], [98.85, 13.75], [98.82, 13.82], [98.47, 13.97], [98.25, 14.5], [98.35, 14.75], [98.25, 15.0], [98.47, 15.53], [98.82, 15.68]]]]}}, "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": {"2025-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.25, 15.0], [98.47, 15.53], [98.82, 15.68], [98.97, 16.03], [99.32, 16.18], [99.35, 16.25], [99.32, 16.32], [98.97, 16.47], [98.75, 17.0], [98.97, 17.53], [99.5, 17.75], [100.03, 17.53], [100.18, 17.18], [100.25, 17.15], [100.5, 17.25], [100.75, 17.15], [100.82, 17.18], [100.85, 17.25], [100.75, 17.5], [100.97, 18.03], [101.5, 18.25], [101.75, 18.15], [102.0, 18.25], [102.53, 18.03], [102.68, 17.68], [103.03, 17.53], [103.25, 17.0], [103.15, 16.75], [103.25, 16.5], [103.03, 15.97], [102.68, 15.82], [102.53, 15.47], [102.0, 15.25], [101.75, 15.35], [101.68, 15.32], [101.53, 14.97], [101.18, 14.82], [101.03, 14.47], [100.68, 14.32], [100.65, 14.25], [100.75, 14.0], [100.65, 13.75], [100.75, 13.5], [100.65, 13.25], [100.75, 13.0], [100.65, 12.75], [100.75, 12.5], [100.65, 12.25], [100.75, 12.0], [100.53, 11.47], [100.0, 11.25], [99.47, 11.47], [99.32, 11.82], [98.97, 11.97], [98.75, 12.5], [98.85, 12.75], [98.75, 13.0], [98.85, 13.25], [98.75, 13.5], [98.85, 13.75], [98.82, 13.82], [98.47, 13.97], [98.25, 14.5], [98.35, 14.75], [98.25, 15.0]]]]}, "2025-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.25, 15.0], [98.47, 15.53], [98.82, 15.68], [98.97, 16.03], [99.32, 16.18], [99.35, 16.25], [99.32, 16.32], [98.97, 16.47], [98.75, 17.0], [98.97, 17.53], [99.5, 17.75], [100.03, 17.53], [100.18, 17.18], [100.25, 17.15], [100.5, 17.25], [100.75, 17.15], [100.82, 17.18], [100.85, 17.25], [100.75, 17.5], [100.97, 18.03], [101.5, 18.25], [101.75, 18.15], [102.0, 18.25], [102.53, 18.03], [102.68, 17.68], [103.03, 17.53], [103.25, 17.0], [103.15, 16.75], [103.25, 16.5], [103.03, 15.97], [102.68, 15.82], [102.53, 15.47], [102.0, 15.25], [101.75, 15.35], [101.68, 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evolution of mean t2m.", "value": [23.818809041891086, 21.96682792182446, 24.831516107782647]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.443991597493493, 17.592855072021507, 20.962014770507835]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2765496600040933, -5.289152234854581, -2.534903884090333]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.76175580489172, -7.190225559664043, -4.357936382587866]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1536311139647735, -3.6218172835914846, -1.7559319327810066]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.9644357362114206, -4.460421055786443, -2.4849976851009874]}}