{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:40.695623", "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": "2017-Apr-30_to_2017-May-03_319.0_-16.0"}, "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": 2017040000893}, "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": "April 30 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 80263.40400940744}, "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": -16.0}, "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": 319.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "319.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 317.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.75, -16.0], [-41.53, -15.47], [-41.0, -15.25], [-40.47, -15.47], [-40.32, -15.82], [-40.25, -15.85], [-40.0, -15.75], [-39.75, -15.85], [-39.5, -15.75], [-38.97, -15.97], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.97, -17.53], [-39.5, -17.75], [-39.75, -17.65], [-40.0, -17.75], [-40.25, -17.65], [-40.5, -17.75], [-41.03, -17.53], [-41.25, -17.0], [-41.15, -16.75], [-41.18, -16.68], [-41.53, -16.53], [-41.75, -16.0]]]]}, "2017-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.53, -14.97], [-42.18, -14.82], [-42.03, -14.47], [-41.68, -14.32], [-41.53, -13.97], [-41.0, -13.75], [-40.75, -13.85], [-40.5, -13.75], [-39.97, -13.97], [-39.82, -14.32], [-39.47, -14.47], [-39.32, -14.82], [-38.97, -14.97], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.97, -17.53], [-39.5, -17.75], [-39.75, -17.65], [-40.0, -17.75], [-40.25, -17.65], [-40.5, -17.75], [-40.75, -17.65], [-41.0, -17.75], [-41.25, -17.65], [-41.5, -17.75], [-42.03, -17.53], [-42.25, -17.0], [-42.12, -16.7], [-42.53, -16.53], [-42.75, -16.0], [-42.65, -15.75], [-42.75, -15.5], [-42.53, -14.97]]]]}, "2017-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.53, -14.97], [-42.18, -14.82], [-42.03, -14.47], [-41.68, -14.32], [-41.53, -13.97], [-41.0, -13.75], [-40.75, -13.85], [-40.5, -13.75], [-39.97, -13.97], [-39.82, -14.32], [-39.47, -14.47], [-39.32, -14.82], [-38.97, -14.97], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.97, -17.53], [-39.5, -17.75], [-39.75, -17.65], [-40.0, -17.75], [-40.25, -17.65], [-40.5, -17.75], [-40.75, -17.65], [-41.0, -17.75], [-41.25, -17.65], [-41.5, -17.75], [-42.03, -17.53], [-42.25, -17.0], [-42.12, -16.7], [-42.53, -16.53], [-42.75, -16.0], [-42.65, -15.75], [-42.75, -15.5], [-42.53, -14.97]]]]}, "2017-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.53, -14.97], [-42.18, -14.82], [-42.03, -14.47], [-41.68, -14.32], [-41.53, -13.97], [-41.0, -13.75], [-40.75, -13.85], [-40.5, -13.75], [-39.97, -13.97], [-39.82, -14.32], [-39.47, -14.47], [-39.32, -14.82], [-38.97, -14.97], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.97, -17.53], [-39.5, -17.75], [-39.75, -17.65], [-40.0, -17.75], [-40.25, -17.65], [-40.5, -17.75], [-40.75, -17.65], [-41.0, -17.75], [-41.25, -17.65], [-41.5, -17.75], [-42.03, -17.53], [-42.25, -17.0], [-42.12, -16.7], [-42.53, -16.53], [-42.75, -16.0], [-42.65, -15.75], [-42.75, -15.5], [-42.53, -14.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.235748758696559}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2966563292450575}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.442240267909085, 20.26595507931711, 20.372229968794784, 20.880057653712754]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.7490289069151, 18.26206691426387, 18.246304876970783, 18.92066008075193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8561170593142637, -2.6049403286010917, -2.4587144078890564, -1.940528136041897]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.443752634402813, -3.235748758696559, -3.1036060123879565, -2.5619617166397006]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.355302584012907, -1.8737063346046512, -1.7828374259501498, -1.4685120357849817]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4867679150758233, -2.45975042347582, -2.3333849263127684, -1.7987777913707053]}}