{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:07.138454", "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": "2024-Jan-25_to_2024-Jan-29_317.5_-12.5"}, "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": 2024010000735}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 50952.86540873011}, "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": -12.5}, "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": 317.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 316.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 317.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-44.18, -13.82], [-44.15, -13.75], [-44.25, -13.5], [-44.03, -12.97], [-43.68, -12.82], [-43.65, -12.75], [-43.75, -12.5], [-43.53, -11.97], [-43.0, -11.75], [-42.75, -11.85], [-42.5, -11.75], [-41.97, -11.97], [-41.75, -12.5], [-41.85, -12.75], [-41.75, -13.0], [-41.85, -13.25], [-41.75, -13.5], [-41.97, -14.03], [-42.32, -14.18], [-42.35, -14.25], [-42.25, -14.5], [-42.35, -14.75], [-42.25, -15.0], [-42.35, -15.25], [-42.25, -15.5], [-42.47, -16.03], [-42.82, -16.18], [-42.97, -16.53], [-43.5, -16.75], [-44.03, -16.53], [-44.25, -16.0], [-44.15, -15.75], [-44.25, -15.5], [-44.15, -15.25], [-44.18, -15.18], [-44.53, -15.03], [-44.75, -14.5], [-44.53, -13.97], [-44.18, -13.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.02999999999997, -11.97], [-42.5, -11.75], [-41.97000000000003, -11.97], [-41.75, -12.5], [-41.97000000000003, -13.03], [-42.5, -13.25], [-43.02999999999997, -13.03], [-43.25, -12.5], [-43.02999999999997, -11.97]]]]}, "2024-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.75, -12.5], [-43.52999999999997, -11.97], [-43.0, -11.75], [-42.75, -11.85], [-42.5, -11.75], [-41.97000000000003, -11.97], [-41.75, -12.5], [-41.85000000000002, -12.75], [-41.75, -13.0], [-41.85000000000002, -13.25], [-41.75, -13.5], [-41.97000000000003, -14.03], [-42.5, -14.25], [-43.02999999999997, -14.03], [-43.18000000000001, -13.68], [-43.52999999999997, -13.53], [-43.75, -13.0], [-43.64999999999998, -12.75], [-43.75, -12.5]]]]}, "2024-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.52999999999997, -15.03], [-44.75, -14.5], [-44.52999999999997, -13.97], [-44.18000000000001, -13.82], [-44.14999999999998, -13.75], [-44.25, -13.5], [-44.02999999999997, -12.97], [-43.68000000000001, -12.82], [-43.64999999999998, -12.75], [-43.75, -12.5], [-43.52999999999997, -11.97], [-43.0, -11.75], [-42.75, -11.85], [-42.5, -11.75], [-41.97000000000003, -11.97], [-41.75, -12.5], [-41.85000000000002, -12.75], [-41.75, -13.0], [-41.85000000000002, -13.25], [-41.75, -13.5], [-41.97000000000003, -14.03], [-42.31999999999999, -14.18], [-42.35000000000002, -14.25], [-42.25, -14.5], [-42.35000000000002, -14.75], [-42.25, -15.0], [-42.35000000000002, -15.25], [-42.25, -15.5], [-42.47000000000003, -16.03], [-42.81999999999999, -16.18], [-42.97000000000003, -16.53], [-43.5, -16.75], [-44.02999999999997, -16.53], [-44.25, -16.0], [-44.14999999999998, -15.75], [-44.25, -15.5], [-44.14999999999998, -15.25], [-44.18000000000001, -15.18], [-44.52999999999997, -15.03]]]]}, "2024-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.52999999999997, -15.03], [-44.75, -14.5], [-44.52999999999997, -13.97], [-44.18000000000001, -13.82], [-44.14999999999998, -13.75], [-44.25, -13.5], [-44.02999999999997, -12.97], [-43.68000000000001, -12.82], [-43.64999999999998, -12.75], [-43.75, -12.5], [-43.52999999999997, -11.97], [-43.0, -11.75], [-42.75, -11.85], [-42.5, -11.75], [-41.97000000000003, -11.97], [-41.75, -12.5], [-41.85000000000002, -12.75], [-41.75, -13.0], [-41.85000000000002, -13.25], [-41.75, -13.5], [-41.97000000000003, -14.03], [-42.31999999999999, -14.18], [-42.35000000000002, -14.25], [-42.25, -14.5], [-42.35000000000002, -14.75], [-42.25, -15.0], [-42.35000000000002, -15.25], [-42.25, -15.5], [-42.47000000000003, -16.03], [-42.81999999999999, -16.18], [-42.97000000000003, -16.53], [-43.5, -16.75], [-44.02999999999997, -16.53], [-44.25, -16.0], [-44.14999999999998, -15.75], [-44.25, -15.5], [-44.14999999999998, -15.25], [-44.18000000000001, -15.18], [-44.52999999999997, -15.03]]]]}, "2024-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.52999999999997, -15.03], [-44.75, -14.5], [-44.52999999999997, -13.97], [-44.18000000000001, -13.82], [-44.14999999999998, -13.75], [-44.25, -13.5], [-44.02999999999997, -12.97], [-43.68000000000001, -12.82], [-43.52999999999997, -12.47], [-43.0, -12.25], [-42.47000000000003, -12.47], [-42.25, -13.0], [-42.35000000000002, -13.25], [-42.25, -13.5], [-42.35000000000002, -13.75], [-42.25, -14.0], [-42.35000000000002, -14.25], [-42.25, -14.5], [-42.35000000000002, -14.75], [-42.25, -15.0], [-42.35000000000002, -15.25], [-42.25, -15.5], [-42.47000000000003, -16.03], [-42.81999999999999, -16.18], [-42.97000000000003, -16.53], [-43.5, -16.75], [-44.02999999999997, -16.53], [-44.25, -16.0], [-44.14999999999998, -15.75], [-44.25, -15.5], [-44.14999999999998, -15.25], [-44.18000000000001, -15.18], [-44.52999999999997, -15.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.8851717416235942}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6233777720935465}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.856748103939765, 23.80976905470584, 24.15757603264916, 23.435908339407263, 24.235241967133106]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.856748103939765, 22.703645315975507, 22.465316233386773, 22.26993116140966, 23.41727572296412]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1426492623703552, -2.3784189799367708, -2.3222007764267922, -3.148133878319112, -2.462199125247952]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1426492623703552, -2.771817380258028, -2.767614974741832, -3.8851717416235942, -3.0252297068971643]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3483921266585182, -1.5347920488009357, -1.4726727870001295, -1.9806799139499163, -1.4862172498669777]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3483921266585182, -1.7981606367564533, -1.7695564337153398, -2.308179322500515, -1.7254354645951018]}}