{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:18.171089", "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": "2015-Feb-18_to_2015-Feb-20_312.5_-18.5"}, "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": 2015020000691}, "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": "February 18 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2015"}, "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": 55825.962394840746}, "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"]}, "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": -18.5}, "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": 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": 310.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.65, -18.25], [-49.75, -18.0], [-49.65, -17.75], [-49.75, -17.5], [-49.53, -16.97], [-49.0, -16.75], [-48.47, -16.97], [-48.32, -17.32], [-48.25, -17.35], [-48.0, -17.25], [-47.75, -17.35], [-47.68, -17.32], [-47.65, -17.25], [-47.75, -17.0], [-47.65, -16.75], [-47.75, -16.5], [-47.53, -15.97], [-47.0, -15.75], [-46.47, -15.97], [-46.32, -16.32], [-45.97, -16.47], [-45.75, -17.0], [-45.85, -17.25], [-45.75, -17.5], [-45.97, -18.03], [-46.32, -18.18], [-46.47, -18.53], [-46.82, -18.68], [-46.97, -19.03], [-47.32, -19.18], [-47.47, -19.53], [-47.82, -19.68], [-47.97, -20.03], [-48.5, -20.25], [-49.03, -20.03], [-49.18, -19.68], [-49.53, -19.53], [-49.75, -19.0], [-49.65, -18.75], [-49.75, -18.5], [-49.65, -18.25]]]]}, "2015-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.65, -18.25], [-49.75, -18.0], [-49.65, -17.75], [-49.75, -17.5], [-49.53, -16.97], [-49.0, -16.75], [-48.47, -16.97], [-48.32, -17.32], [-48.25, -17.35], [-48.0, -17.25], [-47.75, -17.35], [-47.68, -17.32], [-47.65, -17.25], [-47.75, -17.0], [-47.65, -16.75], [-47.75, -16.5], [-47.53, -15.97], [-47.0, -15.75], [-46.47, -15.97], [-46.32, -16.32], [-45.97, -16.47], [-45.75, -17.0], [-45.85, -17.25], [-45.75, -17.5], [-45.97, -18.03], [-46.32, -18.18], [-46.47, -18.53], [-46.82, -18.68], [-46.97, -19.03], [-47.32, -19.18], [-47.47, -19.53], [-47.82, -19.68], [-47.97, -20.03], [-48.5, -20.25], [-49.03, -20.03], [-49.18, -19.68], [-49.53, -19.53], [-49.75, -19.0], [-49.65, -18.75], [-49.75, -18.5], [-49.65, -18.25]]]]}, "2015-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.65, -18.25], [-49.75, -18.0], [-49.65, -17.75], [-49.75, -17.5], [-49.53, -16.97], [-49.0, -16.75], [-48.47, -16.97], [-48.32, -17.32], [-48.25, -17.35], [-48.0, -17.25], [-47.75, -17.35], [-47.68, -17.32], [-47.65, -17.25], [-47.75, -17.0], [-47.65, -16.75], [-47.75, -16.5], [-47.53, -15.97], [-47.0, -15.75], [-46.47, -15.97], [-46.32, -16.32], [-45.97, -16.47], [-45.75, -17.0], [-45.85, -17.25], [-45.75, -17.5], [-45.97, -18.03], [-46.32, -18.18], [-46.47, -18.53], [-46.82, -18.68], [-46.97, -19.03], [-47.32, -19.18], [-47.47, -19.53], [-47.82, -19.68], [-47.97, -20.03], [-48.5, -20.25], [-49.03, -20.03], [-49.18, -19.68], [-49.53, -19.53], [-49.75, -19.0], [-49.65, -18.75], [-49.75, -18.5], [-49.65, -18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.786080186192578}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.09031358575185}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.142169153119312, 22.309704190328148, 22.745729231253506]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.631954536412593, 21.03976950289274, 21.586313314275287]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.322888760339825, -2.1696301871489765, -1.7784218097667481]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7205367626389716, -2.786080186192578, -2.0828838586857614]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.839314743425848, -1.7342090238485266, -1.4426202076723618]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1539003571498974, -2.0891472554188057, -1.6836786141355906]}}