{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:33.289234", "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": "2011-Jan-21_to_2011-Jan-29_308.0_-10.0"}, "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": 2011010001052}, "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 21 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 67188.22282122652}, "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.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": -10.0}, "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": 308.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 307.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.0, -9.25], [-51.47, -9.47], [-51.25, -10.0], [-51.47, -10.53], [-52.0, -10.75], [-52.53, -10.53], [-52.75, -10.0], [-52.53, -9.47], [-52.0, -9.25]]]]}, "2011-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.0, -9.25], [-51.47, -9.47], [-51.25, -10.0], [-51.47, -10.53], [-52.0, -10.75], [-52.53, -10.53], [-52.75, -10.0], [-52.53, -9.47], [-52.0, -9.25]]]]}, "2011-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, -9.47], [-52.0, -9.25], [-51.47, -9.47], [-51.25, -10.0], [-51.35, -10.25], [-51.25, -10.5], [-51.47, -11.03], [-52.0, -11.25], [-52.53, -11.03], [-52.75, -10.5], [-52.65, -10.25], [-52.75, -10.0], [-52.53, -9.47]]]]}, "2011-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.0, -9.75], [-51.47, -9.97], [-51.25, -10.5], [-51.47, -11.03], [-52.0, -11.25], [-52.53, -11.03], [-52.75, -10.5], [-52.53, -9.97], [-52.0, -9.75]]]]}, "2011-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.65, -9.75], [-52.75, -9.5], [-52.65, -9.25], [-52.75, -9.0], [-52.65, -8.75], [-52.75, -8.5], [-52.65, -8.25], [-52.75, -8.0], [-52.53, -7.47], [-52.18, -7.32], [-52.03, -6.97], [-51.5, -6.75], [-51.25, -6.85], [-51.0, -6.75], [-50.47, -6.97], [-50.32, -7.32], [-50.25, -7.35], [-50.0, -7.25], [-49.47, -7.47], [-49.25, -8.0], [-49.47, -8.53], [-49.82, -8.68], [-49.97, -9.03], [-50.5, -9.25], [-50.75, -9.15], [-51.0, -9.25], [-51.25, -9.15], [-51.32, -9.18], [-51.35, -9.25], [-51.25, -9.5], [-51.35, -9.75], [-51.25, -10.0], [-51.35, -10.25], [-51.25, -10.5], [-51.47, -11.03], [-52.0, -11.25], [-52.53, -11.03], [-52.75, -10.5], [-52.65, -10.25], [-52.75, -10.0], [-52.65, -9.75]]]]}, "2011-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.65, -9.75], [-52.75, -9.5], [-52.65, -9.25], [-52.75, -9.0], [-52.65, -8.75], [-52.75, -8.5], [-52.65, -8.25], [-52.75, -8.0], [-52.53, -7.47], [-52.18, -7.32], [-52.03, -6.97], [-51.5, -6.75], [-51.25, -6.85], [-51.0, -6.75], [-50.47, -6.97], [-50.32, -7.32], [-50.25, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1652524059100529, -1.0561990546437983, -1.3581780260190044, -1.1801559042401664, -1.4703656819522317, -1.6962775020125103, -1.4080746152963461, -1.432188491089063, -1.5080937412190565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1652524059100529, -1.0561990546437983, -1.365114842112007, -1.1801559042401664, -1.7182276913853798, -2.1271988316710804, -1.7403075595804012, -1.6382209609417941, -1.729206470930876]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3102598074034544, -1.2168967725580504, -1.4841763397010546, -1.2397191711326663, -1.6948593168502957, -1.8701290030848305, -1.5510253369364129, -1.4730671198250667, -1.5594880490011132]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3102598074034544, -1.2168967725580504, -1.5549355533745923, -1.2397191711326663, -2.0747703022245005, -2.1784151710625923, -1.8123242003501012, -1.6027383969470592, -1.770040492680217]}}