{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:58.424703", "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-Dec-03_to_2012-Dec-05_310.5_-5.0"}, "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": 2012120000227}, "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": "December 03 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 05 2012"}, "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": 73805.3444046971}, "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": -5.0}, "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": 310.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.75}, "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": -4.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.68, -5.68], [-50.03, -5.53], [-50.25, -5.0], [-50.03, -4.47], [-49.5, -4.25], [-49.2, -4.38], [-49.03, -3.97], [-48.5, -3.75], [-47.97, -3.97], [-47.82, -4.32], [-47.5, -4.46], [-47.18, -4.32], [-47.03, -3.97], [-46.5, -3.75], [-46.25, -3.85], [-46.0, -3.75], [-45.47, -3.97], [-45.32, -4.32], [-44.97, -4.47], [-44.75, -5.0], [-44.97, -5.53], [-45.5, -5.75], [-46.03, -5.53], [-46.18, -5.18], [-46.25, -5.15], [-46.32, -5.18], [-46.35, -5.25], [-46.25, -5.5], [-46.47, -6.03], [-46.82, -6.18], [-46.85, -6.25], [-46.75, -6.5], [-46.85, -6.75], [-46.75, -7.0], [-46.97, -7.53], [-47.5, -7.75], [-47.75, -7.65], [-48.0, -7.75], [-48.25, -7.65], [-48.5, -7.75], [-49.03, -7.53], [-49.18, -7.18], [-49.25, -7.15], [-49.5, -7.25], [-50.03, -7.03], [-50.25, -6.5], [-50.03, -5.97], [-49.68, -5.82], [-49.65, -5.75], [-49.68, -5.68]]]]}, "2012-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.68, -5.68], [-50.03, -5.53], [-50.25, -5.0], [-50.03, -4.47], [-49.5, -4.25], [-49.2, -4.38], [-49.03, -3.97], [-48.5, -3.75], [-47.97, -3.97], [-47.82, -4.32], [-47.5, -4.46], [-47.18, -4.32], [-47.03, -3.97], [-46.5, -3.75], [-46.25, -3.85], [-46.0, -3.75], [-45.47, -3.97], [-45.32, -4.32], [-44.97, -4.47], [-44.75, -5.0], [-44.97, -5.53], [-45.5, -5.75], [-46.03, -5.53], [-46.18, -5.18], [-46.25, -5.15], [-46.32, -5.18], [-46.35, -5.25], [-46.25, -5.5], [-46.47, -6.03], [-46.82, -6.18], [-46.85, -6.25], [-46.75, -6.5], [-46.85, -6.75], [-46.75, -7.0], [-46.97, -7.53], [-47.5, -7.75], [-47.75, -7.65], [-48.0, -7.75], [-48.25, -7.65], [-48.5, -7.75], [-49.03, -7.53], [-49.18, -7.18], [-49.25, -7.15], [-49.5, -7.25], [-50.03, -7.03], [-50.25, -6.5], [-50.03, -5.97], [-49.68, -5.82], [-49.65, -5.75], [-49.68, -5.68]]]]}, "2012-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.68, -5.68], [-50.03, -5.53], [-50.25, -5.0], [-50.03, -4.47], [-49.5, -4.25], [-49.2, -4.38], [-49.03, -3.97], [-48.5, -3.75], [-47.97, -3.97], [-47.82, -4.32], [-47.5, -4.46], [-47.18, -4.32], [-47.03, -3.97], [-46.5, -3.75], [-46.25, -3.85], [-46.0, -3.75], [-45.47, -3.97], [-45.32, -4.32], [-44.97, -4.47], [-44.75, -5.0], [-44.97, -5.53], [-45.5, -5.75], [-46.03, -5.53], [-46.18, -5.18], [-46.25, -5.15], [-46.32, -5.18], [-46.35, -5.25], [-46.25, -5.5], [-46.47, -6.03], [-46.82, -6.18], [-46.85, -6.25], [-46.75, -6.5], [-46.85, -6.75], [-46.75, -7.0], [-46.97, -7.53], [-47.5, -7.75], [-47.75, -7.65], [-48.0, -7.75], [-48.25, -7.65], [-48.5, -7.75], [-49.03, -7.53], [-49.18, -7.18], [-49.25, -7.15], [-49.5, -7.25], [-50.03, -7.03], [-50.25, -6.5], [-50.03, -5.97], [-49.68, -5.82], [-49.65, -5.75], [-49.68, -5.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.829560007119653}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7590353968051302}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.670973586683772, 25.352191292225314, 25.147539283799404]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.12483226080758, 24.746891471764172, 24.55646660830911]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1443798892350947, -1.4893889845330577, -1.6433373166472383]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.829560007119653, -1.7371548491640851, -2.0620400837032093]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9669938383599181, -1.3926128921874692, -1.5193348912252873]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.8891747390741083, -1.4901555463921548, -1.8137063759952499]}}