{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:50.541850", "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": "2013-Mar-23_to_2013-Mar-25_313.5_-27.5"}, "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": 2013030000740}, "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 23 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 2013"}, "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": 149974.83991013916}, "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": ["S.Atlantic-Ocean", "S.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": ["South Atlantic Ocean"]}, "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": -27.5}, "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": 313.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.5\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": 317.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -29.53], [-50.25, -29.0], [-50.03, -28.47], [-49.5, 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[-47.25, -29.15], [-47.5, -29.25], [-47.75, -29.15], [-47.82, -29.18], [-47.97, -29.53], [-48.5, -29.75], [-48.75, -29.65], [-49.0, -29.75], [-49.25, -29.65], [-49.5, -29.75], [-50.03, -29.53]]]]}, "2013-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -29.53], [-50.25, -29.0], [-50.03, -28.47], [-49.5, -28.25], [-49.25, -28.35], [-49.18, -28.32], [-49.03, -27.97], [-48.68, -27.82], [-48.65, -27.75], [-48.75, -27.5], [-48.65, -27.25], [-48.75, -27.0], [-48.65, -26.75], [-48.75, -26.5], [-48.53, -25.97], [-48.0, -25.75], [-47.75, -25.85], [-47.68, -25.82], [-47.53, -25.47], [-47.0, -25.25], [-46.47, -25.47], [-46.32, -25.82], [-46.25, -25.85], [-46.0, -25.75], [-45.47, -25.97], [-45.32, -26.32], [-44.97, -26.47], [-44.82, -26.82], [-44.75, -26.85], [-44.5, -26.75], [-43.97, -26.97], [-43.82, -27.32], [-43.47, -27.47], [-43.25, -28.0], [-43.35, -28.25], [-43.32, -28.32], [-43.25, -28.35], [-43.0, -28.25], [-42.47, -28.47], [-42.25, -29.0], [-42.35, -29.25], [-42.25, -29.5], [-42.47, -30.03], [-43.0, -30.25], [-43.25, -30.15], [-43.5, -30.25], [-43.75, -30.15], [-44.0, -30.25], [-44.25, -30.15], [-44.5, -30.25], [-44.75, -30.15], [-45.0, -30.25], [-45.25, -30.15], [-45.5, -30.25], [-46.03, -30.03], [-46.18, -29.68], [-46.53, -29.53], [-46.68, -29.18], [-46.75, -29.15], [-47.0, -29.25], [-47.25, -29.15], [-47.5, -29.25], [-47.75, -29.15], [-47.82, -29.18], [-47.97, -29.53], [-48.5, -29.75], [-48.75, -29.65], [-49.0, -29.75], [-49.25, -29.65], [-49.5, -29.75], [-50.03, -29.53]]]]}, "2013-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -29.53], [-50.25, -29.0], [-50.03, -28.47], [-49.5, -28.25], [-49.25, -28.35], [-49.18, -28.32], [-49.03, -27.97], [-48.68, -27.82], [-48.65, -27.75], [-48.75, -27.5], [-48.65, -27.25], [-48.75, -27.0], [-48.65, -26.75], [-48.75, -26.5], [-48.53, -25.97], [-48.0, -25.75], [-47.75, -25.85], [-47.68, -25.82], [-47.53, -25.47], [-47.0, -25.25], [-46.47, -25.47], [-46.32, -25.82], 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-2.6038527848223225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9292788627069757}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.494473929740707, 22.11723894718358, 22.14369816371044]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.706208163788858, 20.226519757440485, 20.599005363649837]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7697641429883344, -2.0392001047872794, -1.9788723403453137]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2998231135091487, -2.348836142080529, -2.6038527848223225]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6466670221718858, -1.9614056063714589, -1.8816493504042753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0710375964947065, -2.34374809739928, -2.4669944475113685]}}