{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:57.501623", "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-Jan-27_to_2022-Jan-29_312.5_-2.5"}, "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": 2022010000994}, "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 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2022"}, "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": 89545.11796770353}, "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": -2.5}, "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": 312.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -1.47], [-49.5, -1.25], [-49.25, -1.35], [-49.0, -1.25], [-48.75, -1.35], [-48.5, -1.25], [-48.25, -1.35], [-48.0, -1.25], [-47.75, -1.35], [-47.5, -1.25], [-47.25, -1.35], [-47.0, -1.25], [-46.75, -1.35], [-46.5, -1.25], [-46.25, -1.35], [-46.0, -1.25], [-45.75, -1.35], [-45.5, -1.25], [-44.97, -1.47], [-44.75, -2.0], [-44.85, -2.25], [-44.75, -2.5], [-44.85, -2.75], [-44.75, -3.0], [-44.97, -3.53], [-45.32, -3.68], [-45.47, -4.03], [-46.0, -4.25], [-46.53, -4.03], [-46.68, -3.68], [-46.75, -3.65], [-46.82, -3.68], [-46.97, -4.03], [-47.5, -4.25], [-47.75, -4.15], [-48.0, -4.25], [-48.25, -4.15], [-48.5, -4.25], [-49.03, -4.03], [-49.25, -3.5], [-49.15, -3.25], [-49.18, -3.18], [-49.25, -3.15], [-49.5, -3.25], [-50.03, -3.03], [-50.25, -2.5], [-50.15, -2.25], [-50.25, -2.0], [-50.03, -1.47]]]]}, "2022-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -1.47], [-49.5, -1.25], [-49.25, -1.35], [-49.0, -1.25], [-48.75, -1.35], [-48.5, -1.25], [-48.25, -1.35], [-48.0, -1.25], [-47.75, -1.35], [-47.5, -1.25], [-47.25, -1.35], [-47.0, -1.25], [-46.75, -1.35], [-46.5, -1.25], [-46.25, -1.35], [-46.0, -1.25], [-45.75, -1.35], [-45.5, -1.25], [-44.97, -1.47], [-44.75, -2.0], [-44.85, -2.25], [-44.75, -2.5], [-44.85, -2.75], [-44.75, -3.0], [-44.97, -3.53], [-45.32, -3.68], [-45.47, -4.03], [-46.0, -4.25], [-46.53, -4.03], [-46.68, -3.68], [-46.75, -3.65], [-46.82, -3.68], [-46.97, -4.03], [-47.5, -4.25], [-47.75, -4.15], [-48.0, -4.25], [-48.25, -4.15], [-48.5, -4.25], [-49.03, -4.03], [-49.25, -3.5], [-49.15, -3.25], [-49.18, -3.18], [-49.25, -3.15], [-49.5, -3.25], [-50.03, -3.03], [-50.25, -2.5], [-50.15, -2.25], [-50.25, -2.0], [-50.03, -1.47]]]]}, "2022-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.03, -1.47], [-49.5, -1.25], [-49.25, -1.35], [-49.0, -1.25], [-48.75, -1.35], [-48.5, -1.25], [-48.25, -1.35], [-48.0, -1.25], [-47.75, -1.35], [-47.5, -1.25], [-47.25, -1.35], [-47.0, -1.25], [-46.75, -1.35], [-46.5, -1.25], [-46.25, -1.35], [-46.0, -1.25], [-45.75, -1.35], [-45.5, -1.25], [-44.97, -1.47], [-44.75, -2.0], [-44.85, -2.25], [-44.75, -2.5], [-44.85, -2.75], [-44.75, -3.0], [-44.97, -3.53], [-45.32, -3.68], [-45.47, -4.03], [-46.0, -4.25], [-46.53, -4.03], [-46.68, -3.68], [-46.75, -3.65], [-46.82, -3.68], [-46.97, -4.03], [-47.5, -4.25], [-47.75, -4.15], [-48.0, -4.25], [-48.25, -4.15], [-48.5, -4.25], [-49.03, -4.03], [-49.25, -3.5], [-49.15, -3.25], [-49.18, -3.18], [-49.25, -3.15], [-49.5, -3.25], [-50.03, -3.03], [-50.25, -2.5], [-50.15, -2.25], [-50.25, -2.0], [-50.03, -1.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.882289244470769}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0272258470171276}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.516679653564267, 24.110985255874084, 24.109522553109286]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.602595571892664, 23.306412281524217, 23.344765002262818]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7639720030149733, -2.1650003619911016, -2.1527051760453073]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3788119227481275, -2.7405922985292364, -2.882289244470769]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5846156868824843, -1.9570628300628081, -1.944259912727032]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0825255183454288, -2.490624948928862, -2.561798646055479]}}