{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:30.700789", "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": "2026-May-27_to_2026-May-31_312.5_-12.0"}, "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": 2026050000665}, "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": "May 27 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 31 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 78502.7892872197}, "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", "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": -12.0}, "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": 312.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 308.75}, "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": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.5, -11.25], [-45.97, -11.47], [-45.75, -12.0], [-45.97, -12.53], [-46.5, -12.75], [-47.03, -12.53], [-47.25, -12.0], [-47.03, -11.47], [-46.5, -11.25]]]]}, "2026-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.75, -13.0], [-51.53, -12.47], [-51.0, -12.25], [-50.75, -12.35], [-50.68, -12.32], [-50.53, -11.97], [-50.0, -11.75], [-49.75, -11.85], [-49.5, -11.75], [-49.25, -11.85], [-49.18, -11.82], [-49.15, -11.75], [-49.25, -11.5], [-49.03, -10.97], [-48.5, -10.75], [-48.25, -10.85], [-48.0, -10.75], [-47.5, -10.96], [-47.0, -10.75], [-46.75, -10.85], [-46.68, -10.82], [-46.53, -10.47], [-46.0, -10.25], [-45.75, -10.35], [-45.5, -10.25], [-44.97, -10.47], [-44.75, -11.0], [-44.97, -11.53], [-45.32, -11.68], [-45.47, -12.03], [-45.82, -12.18], [-45.97, -12.53], [-46.5, -12.75], [-46.8, -12.62], [-46.97, -13.03], [-47.32, -13.18], [-47.47, -13.53], [-48.0, -13.75], [-48.25, -13.65], [-48.5, -13.75], [-48.75, -13.65], [-48.82, -13.68], [-48.97, -14.03], [-49.5, -14.25], [-49.75, -14.15], [-50.0, -14.25], [-50.25, -14.15], [-50.5, -14.25], [-51.03, -14.03], [-51.18, -13.68], [-51.53, -13.53], [-51.75, -13.0]]]]}, "2026-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.75, -13.0], [-51.53, -12.47], [-51.0, -12.25], [-50.75, -12.35], [-50.68, -12.32], [-50.53, -11.97], [-50.0, -11.75], [-49.75, -11.85], [-49.5, -11.75], [-49.25, -11.85], [-49.18, -11.82], [-49.15, -11.75], [-49.25, -11.5], [-49.03, -10.97], [-48.5, -10.75], [-48.25, -10.85], [-48.0, -10.75], [-47.5, -10.96], [-47.0, -10.75], [-46.75, -10.85], [-46.68, -10.82], [-46.53, -10.47], [-46.0, -10.25], [-45.75, -10.35], [-45.5, -10.25], [-44.97, -10.47], [-44.75, -11.0], [-44.97, -11.53], [-45.32, -11.68], [-45.47, -12.03], [-45.82, -12.18], [-45.97, -12.53], [-46.5, -12.75], [-46.8, -12.62], [-46.97, -13.03], [-47.32, -13.18], [-47.47, -13.53], [-48.0, -13.75], [-48.25, -13.65], [-48.5, -13.75], [-48.75, -13.65], [-48.82, -13.68], [-48.97, -14.03], [-49.5, -14.25], [-49.75, -14.15], [-50.0, -14.25], [-50.25, -14.15], [-50.5, -14.25], [-51.03, -14.03], [-51.18, -13.68], [-51.53, -13.53], [-51.75, -13.0]]]]}, "2026-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.75, -13.0], [-51.53, -12.47], [-51.0, -12.25], [-50.75, -12.35], [-50.68, -12.32], [-50.53, -11.97], [-50.0, -11.75], [-49.75, -11.85], [-49.5, -11.75], [-49.25, -11.85], [-49.18, -11.82], [-49.15, -11.75], [-49.25, -11.5], [-49.03, -10.97], [-48.5, -10.75], [-48.25, -10.85], [-48.0, -10.75], [-47.5, -10.96], [-47.0, -10.75], [-46.75, -10.85], [-46.68, -10.82], [-46.53, -10.47], [-46.0, -10.25], [-45.75, -10.35], [-45.5, -10.25], [-44.97, -10.47], [-44.75, -11.0], [-44.97, -11.53], [-45.32, -11.68], [-45.47, -12.03], [-45.82, -12.18], [-45.97, -12.53], [-46.5, -12.75], [-46.8, -12.62], [-46.97, -13.03], [-47.32, -13.18], [-47.47, -13.53], [-48.0, -13.75], [-48.25, -13.65], [-48.5, -13.75], [-48.75, -13.65], [-48.82, -13.68], [-48.97, -14.03], [-49.5, -14.25], [-49.75, -14.15], [-50.0, -14.25], [-50.25, -14.15], [-50.5, -14.25], [-51.03, -14.03], [-51.18, -13.68], [-51.53, -13.53], [-51.75, -13.0]]]]}, "2026-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -12.03], [-49.25, -11.5], [-49.03, -10.97], [-48.5, -10.75], [-47.97, -10.97], [-47.8, -11.38], [-47.5, -11.25], [-46.97, -11.47], [-46.75, -12.0], [-46.97, -12.53], [-47.5, -12.75], [-48.03, -12.53], [-48.2, -12.12], [-48.5, -12.25], [-49.03, -12.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7520246407055993}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8672848821236074}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.219668324788415, 24.316191022824057, 24.06021358783437, 23.786698326697717, 24.987477874755882]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.219668324788415, 21.66474558512374, 20.895312245686853, 21.2048329671224, 24.571828460693382]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5585958624689624, -1.6553100497226603, -1.8649671224011923, -2.1191635080704057, -1.5330109522462578]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5585958624689624, -1.9900854858803427, -2.3845069465067468, -2.7520246407055993, -1.6859113192440418]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.409175367737712, -1.4836622871581044, -1.6293730081764548, -1.8421084545456772, -1.3139458790619332]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.409175367737712, -1.8038172999125692, -2.035143159622567, -2.259506406650803, -1.353151097078403]}}