{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:40.517946", "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": "2023-Mar-07_to_2023-Mar-09_310.5_-18.5"}, "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": 2023030000284}, "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": "March 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 09 2023"}, "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": 55918.208426585}, "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": -18.5}, "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": 310.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -18.0], [-50.53, -17.47], [-50.18, -17.32], [-50.03, -16.97], [-49.68, -16.82], [-49.53, -16.47], [-49.18, -16.32], [-49.03, -15.97], [-48.5, -15.75], [-47.97, -15.97], [-47.82, -16.32], [-47.75, -16.35], [-47.5, -16.25], [-46.97, -16.47], [-46.75, -17.0], [-46.85, -17.25], [-46.75, -17.5], [-46.97, -18.03], [-47.32, -18.18], [-47.47, -18.53], [-47.82, -18.68], [-47.97, -19.03], [-48.5, -19.25], [-48.8, -19.12], [-48.97, -19.53], [-49.5, -19.75], [-49.75, -19.65], [-50.0, -19.75], [-50.53, -19.53], [-50.75, -19.0], [-50.65, -18.75], [-50.75, -18.5], [-50.65, -18.25], [-50.75, -18.0]]]]}}, "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": {"2023-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -18.5], [-50.64999999999998, -18.25], [-50.75, -18.0], [-50.52999999999997, -17.47], [-50.18000000000001, -17.32], [-50.02999999999997, -16.97], [-49.68000000000001, -16.82], [-49.52999999999997, -16.47], [-49.18000000000001, -16.32], [-49.02999999999997, -15.97], [-48.5, -15.75], [-47.97000000000003, -15.97], [-47.81999999999999, -16.32], [-47.75, -16.35], [-47.5, -16.25], [-46.97000000000003, -16.47], [-46.75, -17.0], [-46.85000000000002, -17.25], [-46.75, -17.5], [-46.97000000000003, -18.03], [-47.31999999999999, -18.18], [-47.47000000000003, -18.53], [-47.81999999999999, -18.68], [-47.97000000000003, -19.03], [-48.5, -19.25], [-48.80000000000001, -19.12], [-48.97000000000003, -19.53], [-49.5, -19.75], [-49.75, -19.65], [-50.0, -19.75], [-50.52999999999997, -19.53], [-50.75, -19.0], [-50.64999999999998, -18.75], [-50.75, -18.5]]]]}, "2023-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -18.5], [-50.64999999999998, -18.25], [-50.75, -18.0], [-50.52999999999997, -17.47], [-50.18000000000001, -17.32], [-50.02999999999997, -16.97], [-49.68000000000001, -16.82], [-49.52999999999997, -16.47], [-49.18000000000001, -16.32], [-49.02999999999997, -15.97], [-48.5, -15.75], [-47.97000000000003, -15.97], [-47.81999999999999, -16.32], [-47.75, -16.35], [-47.5, -16.25], [-46.97000000000003, -16.47], [-46.75, -17.0], [-46.85000000000002, -17.25], [-46.75, -17.5], [-46.97000000000003, -18.03], [-47.31999999999999, -18.18], [-47.47000000000003, -18.53], [-47.81999999999999, -18.68], [-47.97000000000003, -19.03], [-48.5, -19.25], [-48.80000000000001, -19.12], [-48.97000000000003, -19.53], [-49.5, -19.75], [-49.75, -19.65], [-50.0, -19.75], [-50.52999999999997, -19.53], [-50.75, -19.0], [-50.64999999999998, -18.75], [-50.75, -18.5]]]]}, "2023-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -18.5], [-50.64999999999998, -18.25], [-50.75, -18.0], [-50.52999999999997, -17.47], [-50.18000000000001, -17.32], [-50.02999999999997, -16.97], [-49.68000000000001, -16.82], [-49.52999999999997, -16.47], [-49.18000000000001, -16.32], [-49.02999999999997, -15.97], [-48.5, -15.75], [-47.97000000000003, -15.97], [-47.81999999999999, -16.32], [-47.75, -16.35], [-47.5, -16.25], [-46.97000000000003, -16.47], [-46.75, -17.0], [-46.85000000000002, -17.25], [-46.75, -17.5], [-46.97000000000003, -18.03], [-47.31999999999999, -18.18], [-47.47000000000003, -18.53], [-47.81999999999999, -18.68], [-47.97000000000003, -19.03], [-48.5, -19.25], [-48.80000000000001, -19.12], [-48.97000000000003, -19.53], [-49.5, -19.75], [-49.75, -19.65], [-50.0, -19.75], [-50.52999999999997, -19.53], [-50.75, -19.0], [-50.64999999999998, -18.75], [-50.75, -18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.990760535273864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0199381698051955}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.63102670778767, 22.59253197735427, 22.44538681069747]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.256733852608534, 20.730011024031057, 21.57492573295565]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9079089400165985, -1.9861015389577268, -2.1658040304412616]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1772480304670125, -2.4657182001190563, -2.990760535273864]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5212995392780815, -1.638462114309828, -1.7833862877242597]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7494139753771811, -2.091458226992424, -2.458304026820222]}}