{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:29.022472", "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": "2020-Apr-14_to_2020-Apr-17_305.0_-10.5"}, "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": 2020040000390}, "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": "April 14 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 2020"}, "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": 51631.557659790036}, "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": ["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": -10.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.25, -10.0], [-56.03, -9.47], [-55.5, -9.25], [-55.25, -9.35], [-55.0, -9.25], [-54.75, -9.35], [-54.5, -9.25], [-54.25, -9.35], [-54.0, -9.25], [-53.47, -9.47], [-53.32, -9.82], [-53.25, -9.85], [-53.0, -9.75], [-52.47, -9.97], [-52.25, -10.5], [-52.47, -11.03], [-53.0, -11.25], [-53.25, -11.15], [-53.5, -11.25], [-53.75, -11.15], [-53.82, -11.18], [-53.97, -11.53], [-54.5, -11.75], [-54.75, -11.65], [-55.0, -11.75], [-55.53, -11.53], [-55.75, -11.0], [-55.65, -10.75], [-55.68, -10.68], [-56.03, -10.53], [-56.25, -10.0]]]]}, "2020-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.25, -11.0], [-57.03, -10.47], [-56.5, -10.25], [-56.25, -10.35], [-56.12, -10.3], [-56.25, -10.0], [-56.03, -9.47], [-55.5, -9.25], [-55.25, -9.35], [-55.0, -9.25], [-54.75, -9.35], [-54.5, -9.25], [-54.25, -9.35], [-54.0, -9.25], [-53.47, -9.47], [-53.32, -9.82], [-53.25, -9.85], [-53.0, -9.75], [-52.47, -9.97], [-52.25, -10.5], [-52.47, -11.03], [-53.0, -11.25], [-53.25, -11.15], [-53.5, -11.25], [-53.75, -11.15], [-53.82, -11.18], [-53.97, -11.53], [-54.32, -11.68], [-54.47, -12.03], [-55.0, -12.25], [-55.25, -12.15], [-55.5, -12.25], [-55.75, -12.15], [-56.0, -12.25], [-56.53, -12.03], [-56.68, -11.68], [-57.03, -11.53], [-57.25, -11.0]]]]}, "2020-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.25, -11.0], [-57.03, -10.47], [-56.5, -10.25], [-56.25, -10.35], [-56.12, -10.3], [-56.25, -10.0], [-56.03, -9.47], [-55.5, -9.25], [-55.25, -9.35], [-55.0, -9.25], [-54.75, -9.35], [-54.5, -9.25], [-54.25, -9.35], [-54.0, -9.25], [-53.47, -9.47], [-53.32, -9.82], [-53.25, -9.85], [-53.0, -9.75], [-52.47, -9.97], [-52.25, -10.5], [-52.47, -11.03], [-53.0, -11.25], [-53.25, -11.15], [-53.5, -11.25], [-53.75, -11.15], [-53.82, -11.18], [-53.97, -11.53], [-54.32, -11.68], [-54.47, -12.03], [-55.0, -12.25], [-55.25, -12.15], [-55.5, -12.25], [-55.75, -12.15], [-56.0, -12.25], [-56.53, -12.03], [-56.68, -11.68], [-57.03, -11.53], [-57.25, -11.0]]]]}, "2020-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.25, -11.0], [-57.03, -10.47], [-56.5, -10.25], [-56.25, -10.35], [-56.0, -10.25], [-55.75, -10.35], [-55.68, -10.32], [-55.53, -9.97], [-55.0, -9.75], [-54.47, -9.97], [-54.25, -10.5], [-54.35, -10.75], [-54.25, -11.0], [-54.35, -11.25], [-54.25, -11.5], [-54.47, -12.03], [-55.0, -12.25], [-55.25, -12.15], [-55.5, -12.25], [-55.75, -12.15], [-56.0, -12.25], [-56.53, -12.03], [-56.68, -11.68], [-57.03, -11.53], [-57.25, -11.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0338663748268573}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5027912146905176}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.444679140012738, 23.387298409651578, 23.465783379083348, 23.726242796550935]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.634311713476052, 22.57309730823016, 22.967088523993823, 23.437368192295366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3943361458766246, -1.580430792393546, -1.5178349261428385, -1.4549649448545026]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8631744568892827, -2.0338663748268573, -1.770071891714224, -1.6799721766028597]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3853535432270028, -1.5122104478708753, -1.450135075776485, -1.3375497643455425]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8507671768794263, -1.8401870180052213, -1.726569788924461, -1.4855072855610418]}}