{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:35.869015", "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": "2012-Feb-10_to_2012-Feb-14_314.0_-12.0"}, "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": 2012020000650}, "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 10 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 14 2012"}, "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": 108546.15227272936}, "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": -12.0}, "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": 314.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "314.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 316.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.65, -12.25], [-46.75, -12.0], [-46.54, -11.5], [-46.75, -11.0], [-46.53, -10.47], [-46.18, -10.32], [-46.03, -9.97], [-45.68, -9.82], [-45.65, -9.75], [-45.75, -9.5], [-45.53, -8.97], [-45.0, -8.75], [-44.47, -8.97], [-44.25, -9.5], [-44.35, -9.75], [-44.25, -10.0], [-44.46, -10.5], [-44.25, -11.0], [-44.35, -11.25], [-44.32, -11.32], [-44.25, -11.35], [-44.0, -11.25], [-43.47, -11.47], [-43.25, -12.0], [-43.47, -12.53], [-44.0, -12.75], [-44.25, -12.65], [-44.5, -12.75], [-44.75, -12.65], [-45.0, -12.75], [-45.25, -12.65], [-45.32, -12.68], [-45.35, -12.75], [-45.25, -13.0], [-45.47, -13.53], [-46.0, -13.75], [-46.53, -13.53], [-46.75, -13.0], [-46.65, -12.75], [-46.75, -12.5], [-46.65, -12.25]]]]}, "2012-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.03, -11.97], [-46.68, -11.82], [-46.65, -11.75], [-46.75, -11.5], [-46.65, -11.25], [-46.75, -11.0], [-46.53, -10.47], [-46.18, -10.32], [-46.03, -9.97], [-45.68, -9.82], [-45.65, -9.75], [-45.75, -9.5], [-45.53, -8.97], [-45.0, -8.75], [-44.47, -8.97], [-44.25, -9.5], [-44.35, -9.75], [-44.25, -10.0], [-44.46, -10.5], [-44.25, -11.0], [-44.35, -11.25], [-44.32, -11.32], [-44.25, -11.35], [-44.0, -11.25], [-43.47, -11.47], [-43.25, -12.0], [-43.47, -12.53], [-43.82, -12.68], [-43.97, -13.03], [-44.32, -13.18], [-44.47, -13.53], [-44.82, -13.68], [-44.97, -14.03], [-45.5, -14.25], [-45.75, -14.15], [-46.0, -14.25], [-46.53, -14.03], [-46.68, -13.68], [-47.03, -13.53], [-47.25, -13.0], [-47.15, -12.75], [-47.25, -12.5], [-47.03, -11.97]]]]}, "2012-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.65, -13.75], [-47.75, -13.5], [-47.65, -13.25], [-47.75, -13.0], [-47.53, -12.47], [-47.18, -12.32], [-47.03, -11.97], [-46.68, -11.82], [-46.65, -11.75], [-46.75, -11.5], [-46.65, -11.25], [-46.75, -11.0], [-46.53, -10.47], [-46.18, -10.32], [-46.03, -9.97], [-45.68, -9.82], [-45.65, -9.75], [-45.75, -9.5], [-45.53, -8.97], [-45.0, -8.75], [-44.47, -8.97], [-44.25, -9.5], [-44.35, -9.75], [-44.25, -10.0], [-44.46, -10.5], [-44.25, -11.0], [-44.35, -11.25], [-44.32, -11.32], [-44.25, -11.35], [-44.0, -11.25], [-43.47, -11.47], [-43.25, -12.0], [-43.47, -12.53], [-43.82, -12.68], [-43.97, -13.03], [-44.32, -13.18], [-44.47, -13.53], [-44.82, -13.68], [-44.85, -13.75], [-44.75, -14.0], [-44.85, -14.25], [-44.75, -14.5], [-44.97, -15.03], [-45.32, -15.18], [-45.47, -15.53], [-46.0, -15.75], [-46.53, -15.53], [-46.68, -15.18], [-46.75, -15.15], [-47.0, -15.25], [-47.53, -15.03], [-47.75, -14.5], [-47.65, -14.25], [-47.75, -14.0], [-47.65, -13.75]]]]}, "2012-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.65, -13.75], [-47.75, -13.5], [-47.65, -13.25], [-47.75, -13.0], [-47.53, -12.47], [-47.18, -12.32], [-47.03, -11.97], [-46.68, -11.82], [-46.65, -11.75], [-46.75, -11.5], [-46.53, -10.97], [-46.0, -10.75], [-45.47, -10.97], [-45.32, -11.32], [-44.97, -11.47], [-44.8, -11.88], [-44.5, -11.75], [-43.97, -11.97], [-43.75, -12.5], [-43.97, -13.03], [-44.32, -13.18], [-44.47, -13.53], 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[-47.53, -15.03], [-47.75, -14.5], [-47.65, -14.25], [-47.75, -14.0], [-47.65, -13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2607768424990695}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.257574805594958}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.48900265697057, 22.300488664524778, 21.873178283171, 21.99079517939441, 22.065564985143794]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.291820996726358, 21.004537958971696, 20.115231356195068, 20.66398607465652, 21.233482062174346]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1493336862846717, -2.0766055784033504, -2.5120104323807797, -2.169074929298097, -2.19630559218151]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7081038635749906, -2.674508753801547, -3.2607768424990695, -2.6091229308948414, -3.202394737371719]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5350811233638137, -1.5002318667981402, -1.7464446249880727, -1.481186707420822, -1.4816770782065103]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.023829720347363, -1.7441919276393745, -2.3039634509477334, -1.7141670234579516, -1.9311320138420964]}}