{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:57.494416", "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": "2022-Jan-27_to_2022-Jan-29_321.5_-4.5"}, "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": 2022010000991}, "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 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2022"}, "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": 154081.73254278454}, "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": ["South Atlantic Ocean"]}, "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": -4.5}, "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": 321.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "321.5\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": 322.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.25}, "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": {"2022-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -3.0], [-45.03, -2.47], [-44.5, -2.25], [-44.25, -2.35], [-44.0, -2.25], [-43.75, -2.35], [-43.5, -2.25], [-43.25, -2.35], [-43.0, -2.25], [-42.47, -2.47], [-42.32, -2.82], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-41.25, -2.85], [-41.18, -2.82], [-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], [-38.82, -3.32], [-38.75, -3.35], [-38.5, -3.25], [-37.97, -3.47], [-37.82, -3.82], [-37.47, -3.97], [-37.25, -4.5], [-37.47, -5.03], [-37.82, -5.18], [-37.87, -5.3], [-37.47, -5.47], [-37.25, -6.0], [-37.47, -6.53], [-38.0, -6.75], [-38.25, -6.65], [-38.5, -6.75], [-38.75, -6.65], [-39.0, -6.75], [-39.5, -6.54], [-40.0, -6.75], [-40.25, -6.65], [-40.5, -6.75], [-40.75, -6.65], [-41.0, -6.75], [-41.53, -6.53], [-41.75, -6.0], [-41.65, -5.75], [-41.75, -5.5], [-41.65, -5.25], [-41.68, -5.18], [-42.03, -5.03], [-42.18, -4.68], [-42.25, -4.65], [-42.5, -4.75], [-42.75, -4.65], [-43.0, -4.75], [-43.53, -4.53], [-43.7, -4.12], [-44.0, -4.25], [-44.53, -4.03], [-44.68, -3.68], [-45.03, -3.53], [-45.25, -3.0]]]]}, "2022-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -3.0], [-45.03, -2.47], [-44.5, -2.25], [-44.25, -2.35], [-44.0, -2.25], [-43.75, -2.35], [-43.5, -2.25], [-43.25, -2.35], [-43.0, -2.25], [-42.47, -2.47], [-42.32, -2.82], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-41.25, -2.85], [-41.18, -2.82], [-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], [-38.82, -3.32], [-38.75, -3.35], [-38.5, -3.25], [-37.97, -3.47], [-37.82, -3.82], [-37.47, -3.97], [-37.25, -4.5], [-37.47, -5.03], [-37.82, -5.18], [-37.87, -5.3], [-37.47, -5.47], [-37.25, -6.0], [-37.47, -6.53], [-38.0, -6.75], [-38.25, -6.65], [-38.5, -6.75], [-38.75, -6.65], [-39.0, -6.75], [-39.5, -6.54], [-40.0, -6.75], [-40.25, -6.65], [-40.5, -6.75], [-40.75, -6.65], [-41.0, -6.75], [-41.53, -6.53], [-41.75, -6.0], [-41.65, -5.75], [-41.75, -5.5], [-41.65, -5.25], [-41.68, -5.18], [-42.03, -5.03], [-42.18, -4.68], [-42.25, -4.65], [-42.5, -4.75], [-42.75, -4.65], [-43.0, -4.75], [-43.53, -4.53], [-43.7, -4.12], [-44.0, -4.25], [-44.53, -4.03], [-44.68, -3.68], [-45.03, -3.53], [-45.25, -3.0]]]]}, "2022-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.25, -3.0], [-45.03, -2.47], [-44.5, -2.25], [-44.25, -2.35], [-44.0, -2.25], [-43.75, -2.35], [-43.5, -2.25], [-43.25, -2.35], [-43.0, -2.25], [-42.47, -2.47], [-42.32, -2.82], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-41.25, -2.85], [-41.18, -2.82], [-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], [-38.82, -3.32], [-38.75, -3.35], [-38.5, -3.25], [-37.97, -3.47], [-37.82, -3.82], [-37.47, -3.97], [-37.25, -4.5], [-37.47, -5.03], [-37.82, -5.18], [-37.87, -5.3], [-37.47, -5.47], [-37.25, -6.0], [-37.47, -6.53], [-38.0, -6.75], [-38.25, -6.65], [-38.5, -6.75], [-38.75, -6.65], [-39.0, -6.75], [-39.5, -6.54], [-40.0, -6.75], [-40.25, -6.65], [-40.5, -6.75], [-40.75, -6.65], [-41.0, -6.75], [-41.53, -6.53], [-41.75, -6.0], [-41.65, -5.75], [-41.75, -5.5], [-41.65, -5.25], [-41.68, -5.18], [-42.03, -5.03], [-42.18, -4.68], [-42.25, -4.65], [-42.5, -4.75], [-42.75, -4.65], [-43.0, -4.75], [-43.53, -4.53], [-43.7, -4.12], [-44.0, -4.25], [-44.53, -4.03], [-44.68, -3.68], [-45.03, -3.53], [-45.25, -3.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.135573456950624}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3577689794140086}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.83623997167689, 24.24841608775671, 24.83077030450721]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.910688095811167, 22.199672020350988, 22.571476576345333]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1470810826775426, -2.74537843041712, -2.180847425147364]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.649132453981508, -3.7759640661555522, -4.135573456950624]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6283265961667852, -2.0721228382252623, -1.60599143475977]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.322448699927041, -3.3544949739361343, -2.759464518475765]}}