{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:12.309984", "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": "2023-Feb-18_to_2023-Feb-20_317.0_-6.5"}, "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": 2023020000715}, "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 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2023"}, "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": 70794.42992681536}, "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": -6.5}, "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": 317.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 315.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 318.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -4.0], [-45.03, -3.47], [-44.68, -3.32], [-44.53, -2.97], [-44.0, -2.75], [-43.47, -2.97], [-43.32, -3.32], [-43.25, -3.35], [-43.0, -3.25], [-42.47, -3.47], [-42.32, -3.82], [-41.97, -3.97], [-41.75, -4.5], [-41.85, -4.75], [-41.82, -4.82], [-41.47, -4.97], [-41.25, -5.5], [-41.35, -5.75], [-41.25, -6.0], [-41.47, -6.53], [-41.82, -6.68], [-41.97, -7.03], [-42.32, -7.18], [-42.47, -7.53], [-43.0, -7.75], [-43.25, -7.65], [-43.5, -7.75], [-44.03, -7.53], [-44.25, -7.0], [-44.03, -6.47], [-43.68, -6.32], [-43.65, -6.25], [-43.75, -6.0], [-43.65, -5.75], [-43.68, -5.68], [-43.75, -5.65], [-44.0, -5.75], [-44.53, -5.53], [-44.75, -5.0], [-44.65, -4.75], [-44.68, -4.68], [-45.03, -4.53], [-45.25, -4.0]]]]}, "2023-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -4.0], [-45.03, -3.47], [-44.68, -3.32], [-44.53, -2.97], [-44.0, -2.75], [-43.47, -2.97], [-43.32, -3.32], [-43.25, -3.35], [-43.0, -3.25], [-42.47, -3.47], [-42.32, -3.82], [-41.97, -3.97], [-41.75, -4.5], [-41.85, -4.75], [-41.82, -4.82], [-41.47, -4.97], [-41.25, -5.5], [-41.35, -5.75], [-41.25, -6.0], [-41.47, -6.53], [-41.82, -6.68], [-41.97, -7.03], [-42.32, -7.18], [-42.47, -7.53], [-43.0, -7.75], [-43.25, -7.65], [-43.5, -7.75], [-44.03, -7.53], [-44.25, -7.0], [-44.03, -6.47], [-43.68, -6.32], [-43.65, -6.25], [-43.75, -6.0], [-43.65, -5.75], [-43.68, -5.68], [-43.75, -5.65], [-44.0, -5.75], [-44.53, -5.53], [-44.75, -5.0], [-44.65, -4.75], [-44.68, -4.68], [-45.03, -4.53], [-45.25, -4.0]]]]}, "2023-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -4.0], [-45.03, -3.47], [-44.68, -3.32], [-44.53, -2.97], [-44.0, -2.75], [-43.47, -2.97], [-43.32, -3.32], [-43.25, -3.35], [-43.0, -3.25], [-42.47, -3.47], [-42.32, -3.82], [-41.97, -3.97], [-41.75, -4.5], [-41.85, -4.75], [-41.82, -4.82], [-41.47, -4.97], [-41.25, -5.5], [-41.35, -5.75], [-41.25, -6.0], [-41.47, -6.53], [-41.82, -6.68], [-41.97, -7.03], [-42.32, -7.18], [-42.47, -7.53], [-43.0, -7.75], [-43.25, -7.65], [-43.5, -7.75], [-44.03, -7.53], [-44.25, -7.0], [-44.03, -6.47], [-43.68, -6.32], [-43.65, -6.25], [-43.75, -6.0], [-43.65, -5.75], [-43.68, -5.68], [-43.75, -5.65], [-44.0, -5.75], [-44.53, -5.53], [-44.75, -5.0], [-44.65, -4.75], [-44.68, -4.68], [-45.03, -4.53], [-45.25, -4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.44398576209187}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8542065818023317}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.67585752333872, 24.498020006233048, 24.5525283490104]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.923377486167226, 23.782496787416505, 24.035124216054612]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.762252999015884, -1.9262451807361507, -1.8741215656549606]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.406373648363058, -2.306916458420119, -2.44398576209187]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.503100380345576, -1.6646803365119567, -1.6144542198106517]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0322528531382473, -2.0219148933117705, -2.104018326296651]}}