{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:40.512509", "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": "2022-Jul-26_to_2022-Jul-31_309.5_-11.5"}, "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": 2022070001124}, "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 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 31 2022"}, "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": 184526.9910949749}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -11.5}, "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": 309.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "309.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 308.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-48.97, -14.03], [-49.32, -14.18], [-49.47, -14.53], [-50.0, -14.75], [-50.25, -14.65], [-50.5, -14.75], [-51.03, -14.53], [-51.18, -14.18], [-51.53, -14.03], [-51.75, -13.5], [-51.65, -13.25], [-51.68, -13.18], [-52.03, -13.03], [-52.25, -12.5], [-52.04, -12.0], [-52.09, -11.89], [-52.18, -11.68], [-52.53, -11.53], [-52.75, -11.0], [-52.53, -10.47], [-52.18, -10.32], [-52.03, -9.97], [-51.5, -9.75], [-51.2, -9.88], [-51.03, -9.47], [-50.5, -9.25], [-50.25, -9.35], [-50.0, -9.25], [-49.47, -9.47], [-49.3, -9.88], [-49.0, -9.75], [-48.47, -9.97], [-48.3, -10.38], [-48.0, -10.25], [-47.75, -10.35], [-47.5, -10.25], [-46.97, -10.47], [-46.82, -10.82], [-46.7, -10.87], [-46.53, -10.47], [-46.0, -10.25], [-45.75, -10.35], [-45.68, -10.32], [-45.53, -9.97], [-45.0, -9.75], [-44.47, -9.97], [-44.25, -10.5], [-44.37, -10.8], [-43.97, -10.97], [-43.75, -11.5], [-43.97, -12.03], [-44.32, -12.18], [-44.47, -12.53], [-44.82, -12.68], [-44.85, -12.75], [-44.75, -13.0], [-44.97, -13.53], [-45.5, -13.75], [-46.03, -13.53], [-46.25, -13.0], [-46.15, -12.75], [-46.2, -12.62], [-46.5, -12.75], [-46.75, -12.65], [-46.82, -12.68], [-46.97, -13.03], [-47.5, -13.25], [-48.0, -13.04], [-48.5, -13.25], [-48.75, -13.15], [-48.87, -13.2], [-48.75, -13.5], [-48.97, -14.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.75, -11.0], [-46.52999999999997, -10.47], [-46.0, -10.25], [-45.75, -10.35], [-45.68000000000001, -10.32], [-45.52999999999997, -9.97], [-45.0, -9.75], [-44.47000000000003, -9.97], [-44.25, -10.5], [-44.370000000000005, -10.8], [-43.97000000000003, -10.97], [-43.75, -11.5], [-43.97000000000003, -12.03], [-44.31999999999999, -12.18], [-44.47000000000003, -12.53], [-45.0, -12.75], [-45.25, -12.65], [-45.5, -12.75], [-46.02999999999997, -12.53], [-46.18000000000001, 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"description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8305330866062945}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9785733502922214}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.21045310882556, 24.079741645562308, 24.116280099859523, 24.31616873853534, 25.077396007114544, 25.835887833453285]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.91073158101989, 20.1121843563393, 20.30011587534267, 20.66530466183957, 24.12327695771694, 25.18487978967704]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.564133000328674, -1.984813793067327, -1.9504163016885505, -2.105528547110103, -1.9136634682805007, -1.75318051101452]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8035456969583947, -2.638624541477327, -2.5455802527027913, -2.8305330866062945, -2.389742224717452, -1.8637306442210502]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2873768942775825, -1.7685678176659552, -1.7200709043323301, -1.8479363433740157, -1.5964182113339718, -1.5175276044780959]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4408965217966803, -2.127652349229755, -2.072433835008647, -2.3784325716460137, -1.8929373791012591, -1.6403674872546268]}}