{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:19.281793", "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-28_to_2022-Mar-31_299.5_-3.5"}, "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": 2022030000897}, "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 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 31 2022"}, "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": 228210.12497270326}, "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.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": -3.5}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.53, -1.97], [-62.18, -1.82], [-62.03, -1.47], [-61.5, -1.25], [-61.25, -1.35], [-61.0, -1.25], [-60.75, -1.35], [-60.5, -1.25], [-60.25, -1.35], [-60.18, -1.32], [-60.03, -0.97], [-59.5, -0.75], [-59.25, -0.85], [-59.18, -0.82], [-59.03, -0.47], [-58.5, -0.25], [-58.25, -0.35], [-58.0, -0.25], [-57.47, -0.47], [-57.32, -0.82], [-56.97, -0.97], [-56.82, -1.32], [-56.47, -1.47], [-56.25, -2.0], [-56.35, -2.25], [-56.25, -2.5], [-56.47, -3.03], [-57.0, -3.25], [-57.25, -3.15], [-57.32, -3.18], [-57.35, -3.25], [-57.25, -3.5], [-57.47, -4.03], [-58.0, -4.25], [-58.25, -4.15], [-58.5, -4.25], [-58.75, -4.15], [-59.0, -4.25], [-59.25, -4.15], [-59.5, -4.25], [-59.75, -4.15], [-60.0, -4.25], [-60.25, -4.15], [-60.5, -4.25], [-60.75, -4.15], [-60.82, -4.18], [-60.97, -4.53], [-61.5, -4.75], [-62.03, -4.53], [-62.18, -4.18], [-62.25, -4.15], [-62.5, -4.25], [-63.03, -4.03], [-63.25, -3.5], [-63.03, -2.97], [-62.62, -2.8], [-62.75, -2.5], [-62.53, -1.97]]]]}, "2022-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.25, -3.5], [-63.03, -2.97], [-62.62, -2.8], [-62.75, -2.5], [-62.53, -1.97], [-62.18, -1.82], [-62.03, -1.47], [-61.5, -1.25], [-61.25, -1.35], [-61.0, -1.25], [-60.75, -1.35], [-60.5, -1.25], [-60.25, -1.35], [-60.18, -1.32], [-60.03, -0.97], [-59.5, -0.75], [-59.25, -0.85], [-59.18, -0.82], [-59.03, -0.47], [-58.5, -0.25], [-58.25, -0.35], [-58.0, -0.25], [-57.47, -0.47], [-57.32, -0.82], [-56.97, -0.97], [-56.82, -1.32], [-56.47, -1.47], [-56.25, -2.0], [-56.35, -2.25], [-56.25, -2.5], [-56.47, -3.03], [-57.0, -3.25], [-56.47, -3.47], [-56.32, -3.82], [-55.97, -3.97], [-55.75, -4.5], [-55.97, -5.03], [-56.5, -5.25], [-56.75, -5.15], [-57.0, -5.25], [-57.25, -5.15], [-57.5, -5.25], [-58.03, -5.03], [-58.18, -4.68], [-58.25, -4.65], [-58.32, -4.68], [-58.35, -4.75], [-58.25, -5.0], [-58.35, -5.25], [-58.25, -5.5], [-58.47, -6.03], [-58.82, -6.18], [-58.85, -6.25], [-58.75, -6.5], [-58.85, -6.75], [-58.75, -7.0], [-58.97, -7.53], [-59.32, -7.68], [-59.47, -8.03], [-60.0, -8.25], [-60.53, -8.03], [-60.68, -7.68], [-61.03, -7.53], [-61.25, -7.0], [-61.15, -6.75], [-61.25, -6.5], [-61.15, -6.25], [-61.25, -6.0], [-61.03, -5.47], [-60.5, -5.25], [-60.25, -5.35], [-60.18, -5.32], [-60.15, -5.25], [-60.18, -5.18], [-60.53, -5.03], [-60.75, -4.5], [-60.65, -4.25], [-60.68, -4.18], [-60.75, -4.15], [-60.82, -4.18], [-60.97, -4.53], [-61.32, -4.68], [-61.47, -5.03], [-62.0, -5.25], [-62.53, -5.03], [-62.75, -4.5], [-62.62, -4.2], [-63.03, -4.03], [-63.25, -3.5]], [[-57.25, -3.15], [-57.32, -3.18], [-57.35, -3.25], [-57.32, -3.32], [-57.25, -3.35], [-57.0, -3.25], [-57.25, -3.15]]]]}, "2022-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.25, -3.5], [-63.03, -2.97], [-62.62, -2.8], [-62.75, -2.5], [-62.53, -1.97], [-62.18, -1.82], [-62.03, -1.47], [-61.5, -1.25], [-61.25, -1.35], [-61.0, -1.25], [-60.75, -1.35], [-60.5, -1.25], [-60.25, -1.35], [-60.18, -1.32], [-60.03, -0.97], [-59.5, -0.75], [-59.25, -0.85], [-59.18, -0.82], [-59.03, -0.47], [-58.5, -0.25], [-58.25, -0.35], [-58.0, -0.25], [-57.47, -0.47], [-57.32, -0.82], [-56.97, -0.97], [-56.82, -1.32], [-56.47, -1.47], [-56.25, -2.0], [-56.35, -2.25], [-56.25, -2.5], [-56.47, -3.03], [-57.0, -3.25], [-56.47, -3.47], [-56.32, -3.82], [-55.97, -3.97], [-55.75, -4.5], [-55.97, -5.03], [-56.5, -5.25], [-56.75, -5.15], [-57.0, -5.25], [-57.25, -5.15], [-57.5, -5.25], [-58.03, -5.03], [-58.18, -4.68], [-58.25, -4.65], [-58.32, -4.68], [-58.35, -4.75], [-58.25, -5.0], [-58.35, -5.25], [-58.25, -5.5], [-58.47, -6.03], [-58.82, -6.18], [-58.85, -6.25], [-58.75, -6.5], [-58.85, -6.75], [-58.75, -7.0], [-58.97, -7.53], [-59.32, -7.68], [-59.47, -8.03], [-60.0, -8.25], [-60.53, -8.03], [-60.68, -7.68], [-61.03, -7.53], [-61.25, -7.0], [-61.15, -6.75], [-61.25, -6.5], [-61.15, -6.25], [-61.25, -6.0], [-61.03, -5.47], [-60.5, -5.25], [-60.25, -5.35], [-60.18, -5.32], [-60.15, -5.25], [-60.18, -5.18], [-60.53, -5.03], [-60.75, -4.5], [-60.65, -4.25], [-60.68, -4.18], [-60.75, -4.15], [-60.82, -4.18], [-60.97, -4.53], [-61.32, -4.68], [-61.47, -5.03], [-62.0, -5.25], [-62.53, -5.03], [-62.75, -4.5], [-62.62, -4.2], [-63.03, -4.03], [-63.25, -3.5]], [[-57.25, -3.15], [-57.32, -3.18], [-57.35, -3.25], [-57.32, -3.32], [-57.25, -3.35], [-57.0, -3.25], [-57.25, -3.15]]]]}, "2022-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, -6.0], [-61.03, -5.47], [-60.5, -5.25], [-60.25, -5.35], [-60.18, -5.32], [-60.15, -5.25], [-60.18, -5.18], [-60.53, -5.03], [-60.75, -4.5], [-60.65, -4.25], [-60.68, -4.18], [-61.03, -4.03], [-61.25, -3.5], [-61.03, -2.97], [-60.5, -2.75], [-59.97, -2.97], [-59.82, -3.32], [-59.75, -3.35], [-59.68, -3.32], [-59.53, -2.97], [-59.0, -2.75], [-58.75, -2.85], [-58.5, -2.75], [-58.25, -2.85], [-58.0, -2.75], [-57.47, -2.97], [-57.32, -3.32], [-57.25, -3.35], [-57.0, -3.25], [-56.47, -3.47], [-56.32, -3.82], [-55.97, -3.97], [-55.75, -4.5], [-55.97, -5.03], [-56.5, -5.25], [-56.75, -5.15], [-57.0, -5.25], [-57.25, -5.15], [-57.5, -5.25], [-58.03, -5.03], [-58.18, -4.68], [-58.25, -4.65], [-58.32, -4.68], [-58.35, -4.75], [-58.25, -5.0], [-58.35, -5.25], [-58.25, -5.5], [-58.47, -6.03], [-58.82, -6.18], [-58.85, -6.25], [-58.75, -6.5], [-58.85, -6.75], [-58.75, -7.0], [-58.97, -7.53], [-59.32, -7.68], [-59.47, -8.03], [-60.0, -8.25], [-60.53, -8.03], [-60.68, -7.68], [-61.03, -7.53], [-61.25, -7.0], [-61.15, -6.75], [-61.25, -6.5], [-61.15, -6.25], [-61.25, -6.0]]], [[[-62.5, -2.75], [-61.97, -2.97], [-61.75, -3.5], [-61.87, -3.8], [-61.47, -3.97], [-61.25, -4.5], [-61.47, -5.03], [-62.0, -5.25], [-62.53, -5.03], [-62.75, -4.5], [-62.62, -4.2], [-63.03, -4.03], [-63.25, -3.5], [-63.03, -2.97], [-62.5, -2.75]]], [[[-58.75, -1.0], [-58.53, -0.47], [-58.0, -0.25], [-57.47, -0.47], [-57.25, -1.0], [-57.47, -1.53], [-58.0, -1.75], [-58.53, -1.53], [-58.75, -1.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.389359943941031}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6315669713371264}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.330467222804884, 24.1543785291546, 24.107600545571074, 24.604047137170085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.29934386940812, 22.845555866858433, 23.32523228802097, 23.690491774606073]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5266089778341847, -1.7083918928451536, -1.7631983254802153, -1.3198700096592655]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1570641028868636, -2.2999093684192076, -2.389359943941031, -1.58279044800895]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6561234957193698, -1.9045990784889941, -1.9667115308782102, -1.5634783236267071]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3665382108035953, -2.5292695291085305, -2.611709250955341, -2.0553295245867096]}}