{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:04.031737", "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-Jul-17_to_2019-Jul-22_314.0_-21.0"}, "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": 2019070000640}, "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": "July 17 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 22 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 308542.0690713682}, "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", "S.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": -21.0}, "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": 314.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "314.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.53, -19.97], [-47.0, -19.75], [-46.47, -19.97], [-46.32, -20.32], [-46.25, -20.35], [-46.0, -20.25], [-45.47, -20.47], [-45.32, -20.82], [-45.0, -20.96], [-44.68, -20.82], [-44.53, -20.47], [-44.18, -20.32], [-44.03, -19.97], [-43.5, -19.75], [-42.97, -19.97], [-42.82, -20.32], [-42.47, -20.47], [-42.25, -21.0], [-42.35, -21.25], [-42.25, -21.5], [-42.35, -21.75], [-42.32, -21.82], [-41.97, -21.97], [-41.75, -22.5], [-41.97, -23.03], [-42.5, -23.25], [-43.03, -23.03], [-43.18, -22.68], [-43.25, -22.65], [-43.5, -22.75], [-44.0, -22.54], [-44.5, -22.75], [-44.75, -22.65], [-44.82, -22.68], [-44.97, -23.03], [-45.5, -23.25], [-45.75, -23.15], [-46.0, -23.25], [-46.53, -23.03], [-46.68, -22.68], [-47.03, -22.53], [-47.25, -22.0], [-47.15, -21.75], [-47.18, -21.68], [-47.53, -21.53], [-47.75, -21.0], [-47.65, -20.75], [-47.75, -20.5], [-47.53, -19.97]]]]}, "2019-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.53, -19.97], [-47.18, -19.82], [-47.03, -19.47], [-46.68, -19.32], [-46.53, -18.97], [-46.0, -18.75], [-45.75, -18.85], [-45.5, -18.75], [-45.25, -18.85], [-45.18, -18.82], [-45.03, -18.47], [-44.5, -18.25], [-43.97, -18.47], [-43.82, -18.82], [-43.75, -18.85], [-43.5, -18.75], [-43.2, -18.88], [-43.03, -18.47], [-42.5, -18.25], [-43.03, -18.03], [-43.25, -17.5], [-43.15, -17.25], [-43.25, -17.0], [-43.12, -16.7], [-43.53, -16.53], [-43.75, -16.0], [-43.53, -15.47], [-43.0, -15.25], [-42.75, -15.35], [-42.5, -15.25], [-42.25, -15.35], [-42.0, -15.25], [-41.75, -15.35], [-41.5, -15.25], [-40.97, -15.47], [-40.82, -15.82], [-40.75, -15.85], [-40.5, -15.75], [-40.25, -15.85], [-40.0, -15.75], [-39.47, -15.97], [-39.25, -16.5], [-39.35, -16.75], [-39.25, -17.0], [-39.37, -17.3], [-38.97, -17.47], [-38.75, -18.0], [-38.97, -18.53], [-39.32, -18.68], [-39.35, -18.75], [-39.25, -19.0], [-39.35, -19.25], [-39.25, -19.5], [-39.47, -20.03], [-39.82, -20.18], [-39.85, -20.25], [-39.75, -20.5], [-39.97, -21.03], [-40.32, -21.18], [-40.47, -21.53], [-40.82, -21.68], [-40.97, -22.03], [-41.5, -22.25], [-41.8, -22.12], [-41.85, -22.25], [-41.75, -22.5], [-41.97, -23.03], [-42.5, -23.25], [-43.03, -23.03], [-43.18, -22.68], [-43.25, -22.65], [-43.5, -22.75], [-44.0, -22.54], [-44.5, -22.75], [-44.75, -22.65], [-44.82, -22.68], [-44.97, -23.03], [-45.5, -23.25], [-45.75, -23.15], [-46.0, -23.25], [-46.53, -23.03], [-46.68, -22.68], [-47.03, -22.53], [-47.25, -22.0], [-47.15, -21.75], [-47.18, -21.68], [-47.53, -21.53], [-47.75, -21.0], [-47.65, -20.75], [-47.75, -20.5], [-47.53, -19.97]], [[-42.25, -18.35], [-42.18, -18.32], [-42.15, -18.25], [-42.18, -18.18], [-42.25, -18.15], [-42.5, -18.25], [-42.25, -18.35]], [[-40.18, -17.82], [-40.12, -17.7], [-40.25, -17.65], [-40.32, -17.68], [-40.35, -17.75], [-40.32, -17.82], [-40.25, -17.85], [-40.18, -17.82]]]]}, "2019-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.53, -19.97], [-47.18, -19.82], [-47.15, -19.75], [-47.25, -19.5], [-47.15, -19.25], [-47.25, -19.0], [-47.15, -18.75], [-47.25, -18.5], [-47.03, -17.97], [-46.5, -17.75], [-46.25, -17.85], [-46.0, -17.75], [-45.75, -17.85], [-45.5, -17.75], [-44.97, -17.97], [-44.8, -18.38], [-44.5, -18.25], [-44.0, -18.46], [-43.5, -18.25], [-43.0, -18.46], [-42.5, -18.25], [-43.03, -18.03], [-43.25, -17.5], [-43.15, -17.25], [-43.25, -17.0], [-43.12, -16.7], [-43.53, -16.53], [-43.75, -16.0], [-43.53, -15.47], [-43.0, -15.25], [-42.75, -15.35], [-42.5, -15.25], [-42.25, -15.35], [-42.0, -15.25], [-41.75, -15.35], [-41.5, -15.25], [-40.97, -15.47], [-40.82, -15.82], [-40.75, -15.85], [-40.5, -15.75], [-40.25, -15.85], [-40.0, -15.75], [-39.47, -15.97], [-39.25, -16.5], [-39.35, -16.75], [-39.25, -17.0], [-39.37, -17.3], [-38.97, -17.47], [-38.75, -18.0], [-38.97, -18.53], [-39.32, -18.68], [-39.35, -18.75], [-39.25, -19.0], [-39.35, -19.25], [-39.25, -19.5], [-39.47, -20.03], [-39.82, -20.18], [-39.85, -20.25], [-39.75, -20.5], [-39.97, -21.03], [-40.32, -21.18], [-40.47, -21.53], [-40.82, -21.68], [-40.97, -22.03], [-41.5, -22.25], [-41.8, -22.12], [-41.85, -22.25], [-41.75, -22.5], [-41.97, -23.03], [-42.5, -23.25], [-43.03, -23.03], [-43.18, -22.68], [-43.25, -22.65], [-43.5, -22.75], [-44.0, -22.54], [-44.5, -22.75], [-44.75, -22.65], [-44.82, -22.68], [-44.97, -23.03], [-45.5, -23.25], [-45.75, -23.15], [-46.0, -23.25], [-46.53, -23.03], [-46.68, -22.68], [-47.03, -22.53], [-47.25, -22.0], [-47.15, -21.75], [-47.18, -21.68], [-47.53, -21.53], [-47.75, -21.0], [-47.65, -20.75], [-47.75, -20.5], [-47.53, -19.97]], [[-42.25, -18.35], [-42.18, -18.32], [-42.15, -18.25], [-42.18, -18.18], [-42.25, -18.15], [-42.5, -18.25], [-42.25, -18.35]], [[-40.18, -17.82], [-40.12, -17.7], [-40.25, -17.65], [-40.32, -17.68], [-40.35, -17.75], [-40.32, -17.82], [-40.25, -17.85], [-40.18, -17.82]]]]}, "2019-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.15, -20.25], [-47.25, -20.0], [-47.15, -19.75], [-47.25, -19.5], [-47.15, -19.25], [-47.25, -19.0], [-47.15, -18.75], [-47.25, -18.5], [-47.03, -17.97], [-46.5, -17.75], [-46.25, -17.85], [-46.0, -17.75], [-45.75, -17.85], [-45.5, -17.75], [-44.97, -17.97], [-44.8, -18.38], [-44.5, -18.25], [-44.0, -18.46], [-43.5, -18.25], [-43.0, -18.46], [-42.5, -18.25], [-43.03, -18.03], [-43.25, -17.5], [-43.15, -17.25], [-43.25, -17.0], [-43.12, -16.7], [-43.53, -16.53], [-43.75, -16.0], [-43.53, -15.47], [-43.0, -15.25], [-42.75, -15.35], [-42.5, -15.25], [-42.25, -15.35], [-42.0, -15.25], [-41.75, -15.35], [-41.5, -15.25], [-40.97, -15.47], [-40.82, -15.82], [-40.75, -15.85], [-40.5, -15.75], [-40.25, -15.85], [-40.0, -15.75], [-39.47, -15.97], [-39.25, -16.5], [-39.35, -16.75], [-39.25, -17.0], [-39.37, -17.3], [-38.97, -17.47], [-38.75, -18.0], [-38.97, -18.53], [-39.32, -18.68], [-39.35, -18.75], [-39.25, -19.0], [-39.35, -19.25], [-39.25, -19.5], [-39.47, -20.03], [-39.82, -20.18], [-39.85, -20.25], [-39.75, -20.5], [-39.97, -21.03], [-40.32, -21.18], [-40.47, -21.53], [-40.82, -21.68], [-40.97, -22.03], [-41.5, -22.25], [-41.8, -22.12], [-41.97, -22.53], [-42.5, -22.75], [-43.03, -22.53], [-43.25, -22.0], [-43.03, -21.47], [-42.62, -21.3], [-42.68, -21.18], [-43.03, -21.03], [-43.18, -20.68], [-43.25, -20.65], [-43.32, -20.68], [-43.47, -21.03], [-44.0, -21.25], [-44.25, -21.15], [-44.5, -21.25], [-44.75, -21.15], [-44.82, -21.18], [-44.97, -21.53], [-45.5, -21.75], [-45.75, -21.65], [-46.0, -21.75], [-46.25, -21.65], [-46.5, -21.75], [-47.03, -21.53], [-47.25, -21.0], [-47.15, -20.75], [-47.25, -20.5], [-47.15, -20.25]], [[-42.25, -18.35], [-42.18, -18.32], [-42.15, -18.25], [-42.18, -18.18], [-42.25, -18.15], [-42.5, -18.25], [-42.25, -18.35]], [[-40.18, -17.82], [-40.12, -17.7], [-40.25, -17.65], [-40.32, -17.68], [-40.35, -17.75], [-40.32, -17.82], [-40.25, -17.85], [-40.18, -17.82]]]]}, "2019-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -20.53], [-41.25, -20.0], [-41.03, -19.47], [-40.5, -19.25], [-39.97, -19.47], [-39.75, -20.0], [-39.97, -20.53], [-40.5, -20.75], [-41.03, -20.53]]], [[[-47.25, -19.0], [-47.15, -18.75], [-47.25, -18.5], [-47.03, -17.97], [-46.5, -17.75], [-46.25, -17.85], [-46.0, -17.75], [-45.75, -17.85], [-45.5, -17.75], [-44.97, -17.97], [-44.8, -18.38], [-44.5, -18.25], [-44.0, -18.46], [-43.5, -18.25], [-42.97, -18.47], [-42.75, -19.0], [-42.85, -19.25], [-42.75, -19.5], [-42.93, -19.93], [-42.5, -19.75], [-41.97, -19.97], [-41.75, -20.5], [-41.97, -21.03], [-42.5, -21.25], [-43.03, -21.03], [-43.25, -20.5], [-43.07, -20.07], [-43.5, -20.25], [-43.75, -20.15], [-44.0, -20.25], [-44.25, -20.15], [-44.5, -20.25], [-45.03, -20.03], [-45.2, -19.62], [-45.32, -19.68], [-45.35, -19.75], [-45.25, -20.0], [-45.46, -20.5], [-45.25, -21.0], [-45.47, -21.53], [-46.0, -21.75], [-46.53, -21.53], [-46.75, -21.0], [-46.62, -20.7], [-47.03, -20.53], [-47.25, -20.0], [-47.15, -19.75], [-47.25, -19.5], [-47.15, -19.25], [-47.25, -19.0]]]]}, "2019-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.0, -18.25], [-45.47, -18.47], [-45.25, -19.0], [-45.47, -19.53], [-46.0, -19.75], [-46.53, -19.53], [-46.75, -19.0], [-46.53, -18.47], [-46.0, -18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.699455761275033}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.699703665347269}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.939622078665423, 16.34596819334979, 16.006893131854724, 17.031367112978558, 16.97011203414155, 17.2920172602511]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.226864690864375, 11.227459581570429, 11.513734639557867, 13.945141603392187, 15.059184451310841, 17.2920172602511]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9478162650847413, -2.572781680183479, -3.0017841921424138, -2.5592296403726515, -1.9571197810090806, -1.9405613686574839]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.488095061617116, -3.9877816014702034, -4.699455761275033, -3.468964249024282, -2.46550469007326, -1.9405613686574839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7357069463801893, -1.8185082999480522, -2.1486166704531353, -1.8823822717852328, -1.2870104243136347, -1.2187326872540702]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.400703860120034, -2.617374667186885, -3.28851521582041, -2.6918153759950765, -1.5447339459403504, -1.2187326872540702]}}