{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:51.989101", "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-Jan-06_to_2022-Jan-10_303.5_3.0"}, "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": 2022010000347}, "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": "January 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 10 2022"}, "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": 64832.2660943151}, "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", "Guyana", "Suriname"]}, "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": 3.0}, "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": 303.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 301.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 3.53], [-57.68, 3.68], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.68, 4.18], [-56.53, 4.53], [-56.0, 4.75], [-55.47, 4.53], [-55.32, 4.18], [-54.97, 4.03], [-54.75, 3.5], [-54.85, 3.25], [-54.75, 3.0], [-54.97, 2.47], [-55.5, 2.25], [-55.75, 2.35], [-55.82, 2.32], [-55.97, 1.97], [-56.5, 1.75], [-56.75, 1.85], [-57.0, 1.75], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.25, 2.5], [-58.15, 2.75], [-58.25, 3.0], [-58.03, 3.53]]]]}, "2022-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 3.53], [-57.68, 3.68], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.68, 4.18], [-56.53, 4.53], [-56.0, 4.75], [-55.47, 4.53], [-55.32, 4.18], [-54.97, 4.03], [-54.75, 3.5], [-54.85, 3.25], [-54.82, 3.18], [-54.47, 3.03], [-54.25, 2.5], [-54.47, 1.97], [-54.82, 1.82], [-54.97, 1.47], [-55.32, 1.32], [-55.47, 0.97], [-56.0, 0.75], [-56.53, 0.97], [-56.68, 1.32], [-57.03, 1.47], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.25, 2.5], [-58.15, 2.75], [-58.25, 3.0], [-58.03, 3.53]]]]}, "2022-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.75, 3.0], [-58.53, 3.53], [-58.0, 3.75], [-57.75, 3.65], [-57.68, 3.68], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.68, 4.18], [-56.53, 4.53], [-56.0, 4.75], [-55.47, 4.53], [-55.32, 4.18], [-54.97, 4.03], [-54.75, 3.5], [-54.85, 3.25], [-54.82, 3.18], [-54.47, 3.03], [-54.25, 2.5], [-54.47, 1.97], [-54.82, 1.82], [-54.97, 1.47], [-55.32, 1.32], [-55.47, 0.97], [-56.0, 0.75], [-56.53, 0.97], [-56.68, 1.32], [-57.03, 1.47], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.18, 2.32], [-58.53, 2.47], [-58.75, 3.0]]]]}, "2022-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.75, 3.0], [-58.53, 3.53], [-58.0, 3.75], [-57.75, 3.65], [-57.68, 3.68], [-57.53, 4.03], [-57.0, 4.25], [-56.75, 4.15], [-56.68, 4.18], [-56.53, 4.53], [-56.0, 4.75], [-55.47, 4.53], [-55.32, 4.18], [-54.97, 4.03], [-54.75, 3.5], [-54.85, 3.25], [-54.82, 3.18], [-54.47, 3.03], [-54.25, 2.5], [-54.47, 1.97], [-54.82, 1.82], [-54.97, 1.47], [-55.32, 1.32], [-55.47, 0.97], [-56.0, 0.75], [-56.53, 0.97], [-56.68, 1.32], [-57.03, 1.47], [-57.18, 1.82], [-57.25, 1.85], [-57.5, 1.75], [-58.03, 1.97], [-58.18, 2.32], [-58.53, 2.47], [-58.75, 3.0]]]]}, "2022-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.53, 2.47], [-58.75, 3.0], [-58.53, 3.53], [-58.0, 3.75], [-57.75, 3.65], [-57.5, 3.75], [-56.97, 3.53], [-56.75, 3.0], [-56.97, 2.47], [-57.5, 2.25], [-57.75, 2.35], [-58.0, 2.25], [-58.53, 2.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4246770663285133}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4165745315208302}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.87819515823884, 23.473670122929207, 23.442934544224215, 23.592692787108376, 24.012447924167702]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.32152298245137, 22.420640611037584, 22.400380074817065, 22.78926040046906, 23.886107556999548]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2926057205436292, -1.5090150329623726, -1.5027054703167415, -1.354862009777784, -1.0415734094021332]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6853829598360903, -1.9144466753861593, -2.4246770663285133, -1.8814116739372935, -1.1071468313206196]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6424796917567581, -1.8486408681002835, -1.8044466074461487, -1.6265946101104514, -1.4055816800687229]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0828365419246566, -2.5200183239075042, -2.5929582444766126, -1.972092818565685, -1.4510154982827181]}}