{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:04.497117", "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-Apr-05_to_2025-Apr-08_319.0_-20.5"}, "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": 2025040000193}, "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": "April 05 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 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": 55102.36101027226}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "S.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": -20.5}, "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": 319.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "319.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 313.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 319.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.53, -18.47], [-46.0, -18.25], [-45.47, -18.47], [-45.32, -18.82], [-44.97, -18.97], [-44.75, -19.5], [-44.97, -20.03], [-45.5, -20.25], [-45.75, -20.15], [-46.0, -20.25], [-46.53, -20.03], [-46.75, -19.5], [-46.65, -19.25], [-46.75, -19.0], [-46.53, -18.47]]]]}, "2025-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.53, -18.47], [-46.0, -18.25], [-45.47, -18.47], [-45.32, -18.82], [-44.97, -18.97], [-44.82, -19.32], [-44.75, -19.35], [-44.5, -19.25], [-44.25, -19.35], [-44.18, -19.32], [-44.03, -18.97], [-43.5, -18.75], [-42.97, -18.97], [-42.82, -19.32], [-42.47, -19.47], [-42.32, -19.82], [-42.25, -19.85], [-42.0, -19.75], [-41.75, -19.85], [-41.5, -19.75], [-41.25, -19.85], [-41.0, -19.75], [-40.47, -19.97], [-40.25, -20.5], [-40.35, -20.75], [-40.25, -21.0], [-40.47, -21.53], [-41.0, -21.75], [-41.25, -21.65], [-41.5, -21.75], [-41.75, -21.65], [-42.0, -21.75], [-42.25, -21.65], [-42.5, -21.75], [-43.03, -21.53], [-43.18, -21.18], [-43.25, -21.15], [-43.5, -21.25], [-44.03, -21.03], [-44.18, -20.68], [-44.25, -20.65], [-44.5, -20.75], [-44.75, -20.65], [-45.0, -20.75], [-45.53, -20.53], [-45.68, -20.18], [-45.75, -20.15], [-46.0, -20.25], [-46.53, -20.03], [-46.75, -19.5], [-46.65, -19.25], [-46.75, -19.0], [-46.53, -18.47]]]]}, "2025-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.53, -18.47], [-46.0, -18.25], [-45.47, -18.47], [-45.32, -18.82], [-44.97, -18.97], [-44.82, -19.32], [-44.75, -19.35], [-44.5, -19.25], [-44.25, -19.35], [-44.18, -19.32], [-44.03, -18.97], [-43.5, -18.75], [-42.97, -18.97], [-42.82, -19.32], [-42.47, -19.47], [-42.32, -19.82], [-42.25, -19.85], [-42.0, -19.75], [-41.75, -19.85], [-41.5, -19.75], [-41.25, -19.85], [-41.0, -19.75], [-40.47, -19.97], [-40.25, -20.5], [-40.35, -20.75], [-40.25, -21.0], [-40.47, -21.53], [-41.0, -21.75], [-41.25, -21.65], [-41.5, -21.75], [-41.75, -21.65], [-42.0, -21.75], [-42.25, -21.65], [-42.5, -21.75], [-43.03, -21.53], [-43.18, -21.18], [-43.25, -21.15], [-43.5, -21.25], [-44.03, -21.03], [-44.18, -20.68], [-44.25, -20.65], [-44.5, -20.75], [-44.75, -20.65], [-45.0, -20.75], [-45.53, -20.53], [-45.68, -20.18], [-45.75, -20.15], [-46.0, -20.25], [-46.53, -20.03], [-46.75, -19.5], [-46.65, -19.25], [-46.75, -19.0], [-46.53, -18.47]]]]}, "2025-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.53, -20.53], [-45.75, -20.0], [-45.53, -19.47], [-45.0, -19.25], [-44.75, -19.35], [-44.5, -19.25], [-44.25, -19.35], [-44.18, -19.32], [-44.03, -18.97], [-43.5, -18.75], [-42.97, -18.97], [-42.82, -19.32], [-42.47, -19.47], [-42.32, -19.82], [-42.25, -19.85], [-42.0, -19.75], [-41.75, -19.85], [-41.5, -19.75], [-41.25, -19.85], [-41.0, -19.75], [-40.47, -19.97], [-40.25, -20.5], [-40.35, -20.75], [-40.25, -21.0], [-40.47, -21.53], [-41.0, -21.75], [-41.25, -21.65], [-41.5, -21.75], [-41.75, -21.65], [-42.0, -21.75], [-42.25, -21.65], [-42.5, -21.75], [-43.03, -21.53], [-43.18, -21.18], [-43.25, -21.15], [-43.5, -21.25], [-44.03, -21.03], [-44.18, -20.68], [-44.25, -20.65], [-44.5, -20.75], [-44.75, -20.65], [-45.0, -20.75], [-45.53, -20.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.550396172040564}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.42227919368562}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.111750539143884, 19.84306039642871, 19.693218619363392, 19.8954902648926]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.27182540893557, 17.64943974812826, 17.54151306152346, 18.3246843973796]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.612357217104261, -2.4964561006903403, -2.599996240694368, -2.2750154939036307]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6389719061772325, -3.0453679033224716, -3.550396172040564, -2.815350229041087]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2406268600246344, -1.7782772605866084, -1.8727032573458926, -1.6166209561543825]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2767755859011518, -2.154781472328677, -2.23881872376196, -1.8445485820668646]}}