{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:17.820648", "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": "2014-Sep-17_to_2014-Sep-25_314.5_-5.5"}, "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": 2014090000633}, "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": "September 17 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 55433.215210171285}, "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": -5.5}, "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": 314.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "314.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.53, -2.47], [-47.0, -2.25], [-46.47, -2.47], [-46.32, -2.82], [-45.97, -2.97], [-45.75, -3.5], [-45.85, -3.75], [-45.75, -4.0], [-45.97, -4.53], [-46.5, -4.75], [-47.03, -4.53], [-47.18, -4.18], [-47.53, -4.03], [-47.75, -3.5], [-47.65, -3.25], [-47.75, -3.0], [-47.53, -2.47]]]]}, "2014-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.25, -5.0], [-48.03, -4.47], [-47.68, -4.32], [-47.54, -4.0], [-47.75, -3.5], [-47.65, -3.25], [-47.75, -3.0], [-47.53, -2.47], [-47.0, -2.25], [-46.47, -2.47], [-46.32, -2.82], [-45.97, -2.97], [-45.75, -3.5], [-45.85, -3.75], [-45.75, -4.0], [-45.85, -4.25], [-45.82, -4.32], [-45.47, -4.47], [-45.25, -5.0], [-45.47, -5.53], [-45.82, -5.68], [-45.97, -6.03], [-46.5, -6.25], [-46.75, -6.15], [-47.0, -6.25], [-47.53, -6.03], [-47.68, -5.68], [-48.03, -5.53], [-48.25, -5.0]]]]}, "2014-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.25, -5.0], [-48.03, -4.47], [-47.68, -4.32], [-47.54, -4.0], [-47.75, -3.5], [-47.65, -3.25], [-47.75, -3.0], [-47.53, -2.47], [-47.0, -2.25], [-46.47, -2.47], [-46.32, -2.82], [-45.97, -2.97], [-45.75, -3.5], [-45.85, -3.75], [-45.75, -4.0], [-45.85, -4.25], [-45.82, -4.32], [-45.75, -4.35], [-45.5, -4.25], [-44.97, -4.47], [-44.82, -4.82], [-44.47, -4.97], [-44.25, -5.5], [-44.47, -6.03], [-45.0, -6.25], [-45.25, -6.15], [-45.5, -6.25], [-45.75, -6.15], [-46.0, -6.25], [-46.25, -6.15], [-46.5, -6.25], [-46.75, -6.15], [-47.0, -6.25], [-47.53, -6.03], [-47.68, -5.68], [-48.03, -5.53], [-48.25, -5.0]]]]}, "2014-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.25, -5.0], [-48.03, -4.47], [-47.68, -4.32], [-47.53, -3.97], [-47.0, -3.75], [-46.75, -3.85], [-46.5, -3.75], [-45.97, -3.97], [-45.82, -4.32], [-45.75, -4.35], [-45.5, -4.25], [-44.97, -4.47], [-44.82, -4.82], [-44.47, -4.97], [-44.25, -5.5], [-44.47, -6.03], [-45.0, -6.25], [-45.25, -6.15], [-45.5, -6.25], [-45.75, -6.15], [-46.0, -6.25], [-46.25, -6.15], [-46.5, -6.25], [-46.75, -6.15], [-47.0, -6.25], [-47.53, -6.03], [-47.68, -5.68], [-48.03, -5.53], [-48.25, -5.0]]]]}, "2014-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.5, -4.25], [-44.97, -4.47], [-44.82, -4.82], [-44.47, -4.97], [-44.25, -5.5], [-44.47, -6.03], [-45.0, -6.25], [-45.25, -6.15], [-45.5, -6.25], [-45.75, -6.15], [-46.0, -6.25], [-46.53, -6.03], [-46.75, -5.5], [-46.53, -4.97], [-46.18, -4.82], [-46.03, -4.47], [-45.5, -4.25]]]]}, "2014-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.03, -4.47], [-46.5, -4.25], [-46.25, -4.35], [-46.0, -4.25], [-45.75, -4.35], [-45.5, -4.25], [-44.97, -4.47], [-44.82, -4.82], [-44.47, -4.97], [-44.25, -5.5], [-44.47, -6.03], [-44.82, -6.18], [-44.97, -6.53], [-45.5, -6.75], [-45.75, -6.65], [-46.0, -6.75], [-46.53, -6.53], [-46.68, -6.18], [-47.03, -6.03], [-47.25, -5.5], [-47.15, -5.25], [-47.25, -5.0], [-47.03, -4.47]]]]}, "2014-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.03, -4.47], [-46.5, -4.25], [-46.25, -4.35], [-46.0, -4.25], [-45.75, -4.35], [-45.5, -4.25], [-44.97, -4.47], [-44.82, -4.82], [-44.47, -4.97], [-44.25, -5.5], [-44.47, -6.03], [-44.82, -6.18], [-44.97, -6.53], [-45.5, -6.75], [-45.75, -6.65], [-46.0, -6.75], [-46.53, -6.53], [-46.68, -6.18], [-47.03, -6.03], [-47.25, -5.5], [-47.15, -5.25], [-47.25, -5.0], [-47.03, -4.47]]]]}, "2014-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.03, -4.47], [-46.5, -4.25], [-46.25, -4.35], [-46.0, -4.25], [-45.75, -4.35], [-45.5, -4.25], [-44.97, -4.47], [-44.82, -4.82], [-44.47, -4.97], [-44.25, -5.5], [-44.47, -6.03], [-44.82, -6.18], [-44.97, -6.53], [-45.5, -6.75], [-45.75, -6.65], [-46.0, -6.75], [-46.53, -6.53], [-46.68, -6.18], [-47.03, -6.03], [-47.25, -5.5], [-47.15, -5.25], [-47.25, -5.0], [-47.03, -4.47]]]]}, "2014-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.5, -4.75], [-44.97, -4.97], [-44.75, -5.5], [-44.97, -6.03], [-45.5, -6.25], [-46.03, -6.03], [-46.25, -5.5], [-46.03, -4.97], [-45.5, -4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.386019925102403}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8823334129505567}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.644446745317964, 26.429347306623868, 25.44455878462793, 26.40256958274142, 27.079336933445518, 26.599030058714334, 26.163548458151865, 26.188046823788227, 27.30887651703921]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.442543591206288, 25.700394648707288, 24.60228697911674, 25.894891467022262, 26.935566885625974, 25.981494452349068, 25.19509691542231, 25.774117050039763, 27.30887651703921]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.145009523644248, -1.4313268313523035, -2.5985064359568852, -1.717369463166449, -1.510250597007726, -1.6483777819221612, -2.076393479917739, -2.025467872400542, -1.3236881839352463]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1696863084190454, -1.7862313281860338, -3.386019925102403, -2.223277449105865, -1.715583056175376, -1.943373956556968, -2.409437794021642, -2.292179531463887, -1.3236881839352463]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3962273302772945, -1.6123873355269636, -2.7867831184153267, -1.8102229049543836, -1.521689407239491, -1.6274300406239026, -2.074160303601932, -2.0583672369607, -1.3361741291936375]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4198690704257533, -1.9454485414658136, -3.515691102954703, -2.2327575402923414, -1.693441033293791, -1.8599053969975612, -2.499909737270638, -2.2908197871762352, -1.3361741291936375]}}