{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:36.593303", "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-Aug-11_to_2015-Aug-14_317.0_-10.5"}, "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": 2015080000495}, "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": "August 11 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 2015"}, "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": 109244.89969917665}, "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": -10.5}, "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": 317.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 315.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 319.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.03, -9.47], [-41.68, -9.32], [-41.53, -8.97], [-41.0, -8.75], [-40.47, -8.97], [-40.32, -9.32], [-39.97, -9.47], [-39.75, -10.0], [-39.85, -10.25], [-39.75, -10.5], [-39.97, -11.03], [-40.5, -11.25], [-41.0, -11.04], [-41.5, -11.25], [-42.03, -11.03], [-42.25, -10.5], [-42.15, -10.25], [-42.25, -10.0], [-42.03, -9.47]]]]}, "2015-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.65, -10.25], [-44.75, -10.0], [-44.53, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68, -9.32], [-43.53, -8.97], [-43.0, -8.75], [-42.75, -8.85], [-42.5, -8.75], [-41.97, -8.97], [-41.82, -9.32], [-41.75, -9.35], [-41.68, -9.32], [-41.53, -8.97], [-41.0, -8.75], [-40.47, -8.97], [-40.32, -9.32], [-39.97, -9.47], [-39.75, -10.0], [-39.85, -10.25], [-39.75, -10.5], [-39.97, -11.03], [-40.5, -11.25], [-41.0, -11.04], [-41.32, -11.18], [-41.35, -11.25], [-41.25, -11.5], [-41.35, -11.75], [-41.25, -12.0], [-41.47, -12.53], [-41.82, -12.68], [-41.97, -13.03], [-42.5, -13.25], [-42.75, -13.15], [-43.0, -13.25], [-43.25, -13.15], [-43.5, -13.25], [-43.75, -13.15], [-44.0, -13.25], [-44.25, -13.15], [-44.5, -13.25], [-45.03, -13.03], [-45.25, -12.5], [-45.03, -11.97], [-44.5, -11.75], [-44.25, -11.85], [-44.18, -11.82], [-44.15, -11.75], [-44.18, -11.68], [-44.53, -11.53], [-44.75, -11.0], [-44.65, -10.75], [-44.75, -10.5], [-44.65, -10.25]]]]}, "2015-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.65, -10.25], [-44.75, -10.0], [-44.53, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68, -9.32], [-43.53, -8.97], [-43.0, -8.75], [-42.75, -8.85], [-42.5, -8.75], [-41.97, -8.97], [-41.82, -9.32], [-41.75, -9.35], [-41.68, -9.32], [-41.53, -8.97], [-41.0, -8.75], [-40.47, -8.97], [-40.32, -9.32], [-39.97, -9.47], [-39.75, -10.0], [-39.85, -10.25], [-39.75, -10.5], [-39.97, -11.03], [-40.5, -11.25], [-41.0, -11.04], [-41.32, -11.18], [-41.35, -11.25], [-41.25, -11.5], [-41.35, -11.75], [-41.25, -12.0], [-41.47, -12.53], [-41.82, -12.68], [-41.97, -13.03], [-42.5, -13.25], [-42.75, -13.15], [-43.0, -13.25], [-43.25, -13.15], [-43.5, -13.25], [-43.75, -13.15], [-44.0, -13.25], [-44.25, -13.15], [-44.5, -13.25], [-45.03, -13.03], [-45.25, -12.5], [-45.03, -11.97], [-44.5, -11.75], [-44.25, -11.85], [-44.18, -11.82], [-44.15, -11.75], [-44.18, -11.68], [-44.53, -11.53], [-44.75, -11.0], [-44.65, -10.75], [-44.75, -10.5], [-44.65, -10.25]]]]}, "2015-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.65, -10.25], [-44.75, -10.0], [-44.53, -9.47], [-44.0, -9.25], [-43.75, -9.35], [-43.68, -9.32], [-43.53, -8.97], [-43.0, -8.75], [-42.75, -8.85], [-42.5, -8.75], [-41.97, -8.97], [-41.82, -9.32], [-41.47, -9.47], [-41.25, -10.0], [-41.35, -10.25], [-41.25, -10.5], [-41.35, -10.75], [-41.25, -11.0], [-41.35, -11.25], [-41.25, -11.5], [-41.35, -11.75], [-41.25, -12.0], [-41.47, -12.53], [-41.82, -12.68], [-41.97, -13.03], [-42.5, -13.25], [-42.75, -13.15], [-43.0, -13.25], [-43.25, -13.15], [-43.5, -13.25], [-43.75, -13.15], [-44.0, -13.25], [-44.25, -13.15], [-44.5, -13.25], [-45.03, -13.03], [-45.25, -12.5], [-45.03, -11.97], [-44.5, -11.75], [-44.25, -11.85], [-44.18, -11.82], [-44.15, -11.75], [-44.18, -11.68], [-44.53, -11.53], [-44.75, -11.0], [-44.65, -10.75], [-44.75, -10.5], [-44.65, -10.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.499772063836758}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4086840917687304}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.125889353528805, 21.941026970830137, 21.656454435514206, 22.723890321297006]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.85166574079733, 17.583591092547294, 16.506322863669027, 17.7016295101551]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.381173391306883, -2.4893949966513986, -2.783954291899971, -2.067008905844409]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5599580670402702, -3.2272671352999964, -3.499772063836758, -2.602441314760995]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3578993559169288, -2.1365758516517324, -2.210470288196377, -1.5487801887037518]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3880862412157722, -2.7601027992500957, -2.6652377120144117, -1.8879965322040861]}}