{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:45.462392", "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-Mar-07_to_2025-Mar-11_319.5_-4.0"}, "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": 2025030000202}, "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": "March 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 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": 64719.36186115691}, "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"]}, "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": -4.0}, "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": 319.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "319.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 318.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.75}, "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": {"2025-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.5, -3.75], [-40.97, -3.97], [-40.75, -4.5], [-40.97, -5.03], [-41.5, -5.25], [-42.03, -5.03], [-42.25, -4.5], [-42.03, -3.97], [-41.5, -3.75]]]]}, "2025-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.25, -4.5], [-42.03, -3.97], [-41.5, -3.75], [-41.25, -3.85], [-41.18, -3.82], [-41.15, -3.75], [-41.25, -3.5], [-41.03, -2.97], [-40.5, -2.75], [-39.97, -2.97], [-39.75, -3.5], [-39.85, -3.75], [-39.75, -4.0], [-39.85, -4.25], [-39.75, -4.5], [-39.97, -5.03], [-40.32, -5.18], [-40.47, -5.53], [-41.0, -5.75], [-41.53, -5.53], [-41.68, -5.18], [-42.03, -5.03], [-42.25, -4.5]]]]}, "2025-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.25, -4.5], [-42.03, -3.97], [-41.68, -3.82], [-41.53, -3.47], [-41.18, -3.32], [-41.15, -3.25], [-41.25, -3.0], [-41.03, -2.47], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47, -2.47], [-39.32, -2.82], [-38.97, -2.97], [-38.75, -3.5], [-38.85, -3.75], [-38.75, -4.0], [-38.85, -4.25], [-38.75, -4.5], [-38.85, -4.75], [-38.75, -5.0], [-38.97, -5.53], [-39.32, -5.68], [-39.47, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.53, -6.03], [-41.75, -5.5], [-41.65, -5.25], [-41.68, -5.18], [-42.03, -5.03], [-42.25, -4.5]]]]}, "2025-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.65, -4.75], [-41.75, -4.5], [-41.65, -4.25], [-41.75, -4.0], [-41.53, -3.47], [-41.18, -3.32], [-41.15, -3.25], [-41.25, -3.0], [-41.03, -2.47], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47, -2.47], [-39.32, -2.82], [-38.97, -2.97], [-38.75, -3.5], [-38.85, -3.75], [-38.75, -4.0], [-38.85, -4.25], [-38.75, -4.5], [-38.85, -4.75], [-38.75, -5.0], [-38.97, -5.53], [-39.32, -5.68], [-39.47, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.53, -6.03], [-41.75, -5.5], [-41.65, -5.25], [-41.75, -5.0], [-41.65, -4.75]]]]}, "2025-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.65, -4.75], [-41.75, -4.5], [-41.65, -4.25], [-41.75, -4.0], [-41.53, -3.47], [-41.18, -3.32], [-41.15, -3.25], [-41.25, -3.0], [-41.03, -2.47], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47, -2.47], [-39.32, -2.82], [-38.97, -2.97], [-38.75, -3.5], [-38.85, -3.75], [-38.75, -4.0], [-38.85, -4.25], [-38.75, -4.5], [-38.85, -4.75], [-38.75, -5.0], [-38.97, -5.53], [-39.32, -5.68], [-39.47, -6.03], [-40.0, -6.25], [-40.25, -6.15], [-40.5, -6.25], [-40.75, -6.15], [-41.0, -6.25], [-41.53, -6.03], [-41.75, -5.5], [-41.65, -5.25], [-41.75, -5.0], [-41.65, -4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8804551893819053}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9752829244471195}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.986035919189476, 24.762138197157185, 24.20443999275335, 24.135683441162143, 24.44168421427412]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.986035919189476, 23.6601552327474, 22.24513397216799, 22.644216156005882, 23.06887334187826]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.751556481752175, -1.5989940850673463, -2.0950839957716476, -2.131947323287477, -1.8169003746646866]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.751556481752175, -1.9586635494596862, -2.4889641859771245, -2.8804551893819053, -2.5064069016098074]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-0.9839500203208145, -1.0939131627023293, -1.5291967779823306, -1.5474207827787438, -1.3270284128585241]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-0.9839500203208145, -1.1616639347172049, -1.9315863372577196, -1.8897142584322295, -1.7070005138235846]}}