{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:31.350392", "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": "2019-Sep-29_to_2019-Oct-02_314.0_-9.0"}, "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": 2019090000876}, "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": "September 29 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 115857.03844155703}, "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": -9.0}, "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": 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": -12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -9.47], [-49.68, -9.32], [-49.65, -9.25], [-49.75, -9.0], [-49.53, -8.47], [-49.18, -8.32], [-49.03, -7.97], [-48.68, -7.82], [-48.65, -7.75], [-48.75, -7.5], [-48.53, -6.97], [-48.0, -6.75], [-47.47, -6.97], [-47.32, -7.32], [-47.0, -7.46], [-46.5, -7.25], [-46.25, -7.35], [-46.0, -7.25], [-45.47, -7.47], [-45.32, -7.82], [-44.97, -7.97], [-44.75, -8.5], [-44.97, -9.03], [-45.32, -9.18], [-45.35, -9.25], [-45.25, -9.5], [-45.47, -10.03], [-46.0, -10.25], [-46.25, -10.15], [-46.37, -10.2], [-46.25, -10.5], [-46.46, -11.0], [-46.25, -11.5], [-46.47, -12.03], [-46.82, -12.18], [-46.97, -12.53], [-47.5, -12.75], [-48.03, -12.53], [-48.25, -12.0], [-48.15, -11.75], [-48.25, -11.5], [-48.15, -11.25], [-48.18, -11.18], [-48.53, -11.03], [-48.68, -10.68], [-48.75, -10.65], [-48.82, -10.68], [-48.97, -11.03], [-49.5, -11.25], [-50.03, -11.03], [-50.25, -10.5], [-50.15, -10.25], [-50.25, -10.0], [-50.03, -9.47]]]]}, "2019-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -9.47], [-49.68, -9.32], [-49.65, -9.25], [-49.75, -9.0], [-49.53, -8.47], [-49.18, -8.32], [-49.03, -7.97], [-48.68, -7.82], [-48.65, -7.75], [-48.75, -7.5], [-48.53, -6.97], [-48.0, -6.75], [-47.47, -6.97], [-47.32, -7.32], [-47.0, -7.46], [-46.5, -7.25], [-46.25, -7.35], [-46.0, -7.25], [-45.47, -7.47], [-45.32, -7.82], [-44.97, -7.97], [-44.75, -8.5], [-44.97, -9.03], [-45.32, -9.18], [-45.35, -9.25], [-45.25, -9.5], [-45.47, -10.03], [-46.0, -10.25], [-46.25, -10.15], [-46.37, -10.2], [-46.25, -10.5], [-46.46, -11.0], [-46.25, -11.5], [-46.47, -12.03], [-46.82, -12.18], [-46.97, -12.53], [-47.5, -12.75], [-48.03, -12.53], [-48.25, -12.0], [-48.15, -11.75], [-48.25, -11.5], [-48.15, -11.25], [-48.18, -11.18], [-48.53, -11.03], [-48.68, -10.68], [-48.75, -10.65], [-48.82, -10.68], [-48.97, -11.03], [-49.5, -11.25], [-50.03, -11.03], [-50.25, -10.5], [-50.15, -10.25], [-50.25, -10.0], [-50.03, -9.47]]]]}, "2019-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -9.47], [-49.68, -9.32], [-49.65, -9.25], [-49.75, -9.0], [-49.53, -8.47], [-49.18, -8.32], [-49.03, -7.97], [-48.68, -7.82], [-48.65, -7.75], [-48.75, -7.5], [-48.53, -6.97], [-48.0, -6.75], [-47.47, -6.97], [-47.32, -7.32], [-47.0, -7.46], [-46.5, -7.25], [-46.25, -7.35], [-46.0, -7.25], [-45.47, -7.47], [-45.32, -7.82], [-44.97, -7.97], [-44.75, -8.5], [-44.97, -9.03], [-45.32, -9.18], [-45.35, -9.25], [-45.25, -9.5], [-45.47, -10.03], [-46.0, -10.25], [-46.25, -10.15], [-46.37, -10.2], [-46.25, -10.5], [-46.46, -11.0], [-46.25, -11.5], [-46.47, -12.03], [-46.82, -12.18], [-46.97, -12.53], [-47.5, -12.75], [-48.03, -12.53], [-48.25, -12.0], [-48.15, -11.75], [-48.25, -11.5], [-48.15, -11.25], [-48.18, -11.18], [-48.53, -11.03], [-48.68, -10.68], [-48.75, -10.65], [-48.82, -10.68], [-48.97, -11.03], [-49.5, -11.25], [-50.03, -11.03], [-50.25, -10.5], [-50.15, -10.25], [-50.25, -10.0], [-50.03, -9.47]]]]}, "2019-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.75, -9.0], [-49.53, -8.47], [-49.18, -8.32], [-49.03, -7.97], [-48.68, -7.82], [-48.53, -7.47], [-48.0, -7.25], [-47.47, -7.47], [-47.25, -8.0], [-47.35, -8.25], [-47.25, -8.5], [-47.47, -9.03], [-47.82, -9.18], [-47.97, -9.53], [-48.32, -9.68], [-48.35, -9.75], [-48.25, -10.0], [-48.47, -10.53], [-49.0, -10.75], [-49.25, -10.65], [-49.5, -10.75], [-50.03, -10.53], [-50.25, -10.0], [-50.03, -9.47], [-49.68, -9.32], [-49.65, -9.25], [-49.75, -9.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.308951081646569}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7292374531698473}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.38338718644468, 25.975972407822326, 26.205837078230388, 25.650273082894955]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.34609797769957, 25.1007671773977, 25.3009189306066, 25.120580722038767]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.228733106394335, -2.635592425841844, -2.382513622161992, -2.4483851774488627]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.308951081646569, -3.5673621292982602, -2.97339098878399, -3.0065564688065365]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1479663415960193, -1.8166793943816208, -1.5869567862856726, -1.5680009843032168]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.918933690947981, -2.5822309928707456, -1.891138462118537, -1.7416907978721223]}}