{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:15.315640", "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-Mar-11_to_2022-Mar-13_298.5_-16.0"}, "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": 2022030000357}, "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 11 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 13 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": 112651.23066850229}, "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": ["Bolivia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "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": -16.0}, "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": 298.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, -15.5], [-64.53, -14.97], [-64.18, -14.82], [-64.15, -14.75], [-64.25, -14.5], [-64.03, -13.97], [-63.5, -13.75], [-63.25, -13.85], [-63.0, -13.75], [-62.75, -13.85], [-62.5, -13.75], [-61.97, -13.97], [-61.82, -14.32], [-61.47, -14.47], [-61.25, -15.0], [-61.35, -15.25], [-61.32, -15.32], [-61.25, -15.35], [-61.18, -15.32], [-61.03, -14.97], [-60.5, -14.75], [-59.97, -14.97], [-59.75, -15.5], [-59.85, -15.75], [-59.75, -16.0], [-59.85, -16.25], [-59.75, -16.5], [-59.97, -17.03], [-60.32, -17.18], [-60.35, -17.25], [-60.32, -17.32], [-60.25, -17.35], [-60.0, -17.25], [-59.47, -17.47], [-59.25, -18.0], [-59.47, -18.53], [-59.82, -18.68], [-59.85, -18.75], [-59.75, -19.0], [-59.97, -19.53], [-60.5, -19.75], [-60.75, -19.65], [-61.0, -19.75], [-61.53, -19.53], [-61.75, -19.0], [-61.57, -18.57], [-62.0, -18.75], [-62.53, -18.53], [-62.75, -18.0], [-62.65, -17.75], [-62.68, -17.68], [-63.03, -17.53], [-63.25, -17.0], [-63.15, -16.75], [-63.18, -16.68], [-63.25, -16.65], [-63.5, -16.75], [-64.03, -16.53], [-64.18, -16.18], [-64.53, -16.03], [-64.75, -15.5]]]]}, "2022-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, -15.5], [-64.53, -14.97], [-64.18, -14.82], [-64.15, -14.75], [-64.25, -14.5], [-64.03, -13.97], [-63.5, -13.75], [-63.25, -13.85], [-63.0, -13.75], [-62.75, -13.85], [-62.5, -13.75], [-61.97, -13.97], [-61.82, -14.32], [-61.47, -14.47], [-61.25, -15.0], [-61.35, -15.25], [-61.32, -15.32], [-61.25, -15.35], [-61.18, -15.32], [-61.03, -14.97], [-60.5, -14.75], [-59.97, -14.97], [-59.75, -15.5], [-59.85, -15.75], [-59.75, -16.0], [-59.85, -16.25], [-59.75, -16.5], [-59.97, -17.03], [-60.32, -17.18], [-60.35, -17.25], [-60.32, -17.32], [-60.25, -17.35], [-60.0, -17.25], [-59.47, -17.47], [-59.25, -18.0], [-59.47, -18.53], [-59.82, -18.68], [-59.85, -18.75], [-59.75, -19.0], [-59.97, -19.53], [-60.5, -19.75], [-60.75, -19.65], [-61.0, -19.75], [-61.53, -19.53], [-61.75, -19.0], [-61.57, -18.57], [-62.0, -18.75], [-62.53, -18.53], [-62.75, -18.0], [-62.65, -17.75], [-62.68, -17.68], [-63.03, -17.53], [-63.25, -17.0], [-63.15, -16.75], [-63.18, -16.68], [-63.25, -16.65], [-63.5, -16.75], [-64.03, -16.53], [-64.18, -16.18], [-64.53, -16.03], [-64.75, -15.5]]]]}, "2022-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, -15.5], [-64.53, -14.97], [-64.18, -14.82], [-64.15, -14.75], [-64.25, -14.5], [-64.03, -13.97], [-63.5, -13.75], [-63.25, -13.85], [-63.0, -13.75], [-62.75, -13.85], [-62.5, -13.75], [-61.97, -13.97], [-61.82, -14.32], [-61.47, -14.47], [-61.25, -15.0], [-61.35, -15.25], [-61.32, -15.32], [-61.25, -15.35], [-61.18, -15.32], [-61.03, -14.97], [-60.5, -14.75], [-59.97, -14.97], [-59.75, -15.5], [-59.85, -15.75], [-59.75, -16.0], [-59.85, -16.25], [-59.75, -16.5], [-59.97, -17.03], [-60.32, -17.18], [-60.35, -17.25], [-60.32, -17.32], [-60.25, -17.35], [-60.0, -17.25], [-59.47, -17.47], [-59.25, -18.0], [-59.47, -18.53], [-59.82, -18.68], [-59.85, -18.75], [-59.75, -19.0], [-59.97, -19.53], [-60.5, -19.75], [-60.75, -19.65], [-61.0, -19.75], [-61.53, -19.53], [-61.75, -19.0], [-61.57, -18.57], [-62.0, -18.75], [-62.53, -18.53], [-62.75, -18.0], [-62.65, -17.75], [-62.68, -17.68], [-63.03, -17.53], [-63.25, -17.0], [-63.15, -16.75], [-63.18, -16.68], [-63.25, -16.65], [-63.5, -16.75], [-64.03, -16.53], [-64.18, -16.18], [-64.53, -16.03], [-64.75, -15.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.378254766121643}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.602582396852911}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.645252941851766, 22.33646399457473, 23.69428983171798]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.273330112671715, 20.470663797553073, 22.37131107575908]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2144785741450126, -3.5009294182395023, -2.0923391981742188]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3195816724063434, -5.378254766121643, -3.054656192006803]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6053625613735478, -2.529949562054707, -1.5053615430439868]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8933001675542829, -3.2132486851303983, -2.1745139714297945]}}