{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:29.438820", "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": "2019-Apr-06_to_2019-Apr-08_299.0_-19.0"}, "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": 2019040000249}, "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": "April 06 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2019"}, "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": 52344.420095990055}, "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": ["Bolivia", "Paraguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -19.0}, "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": 299.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.53, -17.97], [-62.0, -17.75], [-61.47, -17.97], [-61.32, -18.32], [-61.25, -18.35], [-61.0, -18.25], [-60.47, -18.47], [-60.32, -18.82], [-60.0, -18.96], [-59.5, -18.75], [-59.25, -18.85], [-59.0, -18.75], [-58.47, -18.97], [-58.25, -19.5], [-58.47, -20.03], [-58.82, -20.18], [-58.97, -20.53], [-59.32, -20.68], [-59.47, -21.03], [-59.82, -21.18], [-59.97, -21.53], [-60.5, -21.75], [-60.75, -21.65], [-61.0, -21.75], [-61.53, -21.53], [-61.75, -21.0], [-61.65, -20.75], [-61.75, -20.5], [-61.65, -20.25], [-61.68, -20.18], [-62.03, -20.03], [-62.18, -19.68], [-62.53, -19.53], [-62.75, -19.0], [-62.65, -18.75], [-62.75, -18.5], [-62.53, -17.97]]]]}, "2019-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.53, -17.97], [-62.0, -17.75], [-61.47, -17.97], [-61.32, -18.32], [-61.25, -18.35], [-61.0, -18.25], [-60.47, -18.47], [-60.32, -18.82], [-60.0, -18.96], [-59.5, -18.75], [-59.25, -18.85], [-59.0, -18.75], [-58.47, -18.97], [-58.25, -19.5], [-58.47, -20.03], [-58.82, -20.18], [-58.97, -20.53], [-59.32, -20.68], [-59.47, -21.03], [-59.82, -21.18], [-59.97, -21.53], [-60.5, -21.75], [-60.75, -21.65], [-61.0, -21.75], [-61.53, -21.53], [-61.75, -21.0], [-61.65, -20.75], [-61.75, -20.5], [-61.65, -20.25], [-61.68, -20.18], [-62.03, -20.03], [-62.18, -19.68], [-62.53, -19.53], [-62.75, -19.0], [-62.65, -18.75], [-62.75, -18.5], [-62.53, -17.97]]]]}, "2019-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.53, -17.97], [-62.0, -17.75], [-61.47, -17.97], [-61.32, -18.32], [-61.25, -18.35], [-61.0, -18.25], [-60.47, -18.47], [-60.32, -18.82], [-60.0, -18.96], [-59.5, -18.75], [-59.25, -18.85], [-59.0, -18.75], [-58.47, -18.97], [-58.25, -19.5], [-58.47, -20.03], [-58.82, -20.18], [-58.97, -20.53], [-59.32, -20.68], [-59.47, -21.03], [-59.82, -21.18], [-59.97, -21.53], [-60.5, -21.75], [-60.75, -21.65], [-61.0, -21.75], [-61.53, -21.53], [-61.75, -21.0], [-61.65, -20.75], [-61.75, -20.5], [-61.65, -20.25], [-61.68, -20.18], [-62.03, -20.03], [-62.18, -19.68], [-62.53, -19.53], [-62.75, -19.0], [-62.65, -18.75], [-62.75, -18.5], [-62.53, -17.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.591399038903944}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.481333644047383}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.88874089694582, 20.38932776935195, 21.167164326459044]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.038796960048614, 19.624206784999558, 20.464072705217063]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.1422214686455385, -5.549748191362324, -4.752031272134285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.591399038903944, -6.13348285696992, -5.297747202111964]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.947129214658165, -1.7387887415690715, -1.4843633898527768]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2934953901164716, -1.9098952111475487, -1.6124414862112024]}}