{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:37.011772", "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": "2013-Jun-23_to_2013-Jun-26_104.5_19.0"}, "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": 2013060000969}, "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": "June 23 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 26 2013"}, "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": 78591.56400415601}, "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": ["Laos", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 19.0}, "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": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 101.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.25, 19.5], [101.47, 20.03], [102.0, 20.25], [102.25, 20.15], [102.5, 20.25], [102.8, 20.13], [102.97, 20.53], [103.5, 20.75], [104.03, 20.53], [104.18, 20.18], [104.25, 20.15], [104.32, 20.18], [104.35, 20.25], [104.25, 20.5], [104.47, 21.03], [105.0, 21.25], [105.25, 21.15], [105.5, 21.25], [105.75, 21.15], [105.82, 21.18], [105.97, 21.53], [106.32, 21.68], [106.47, 22.03], [107.0, 22.25], [107.25, 22.15], [107.5, 22.25], [108.03, 22.03], [108.25, 21.5], [108.03, 20.97], [107.5, 20.75], [107.25, 20.85], [107.18, 20.82], [107.03, 20.47], [106.68, 20.32], [106.65, 20.25], [106.75, 20.0], [106.53, 19.47], [106.18, 19.32], [106.15, 19.25], [106.25, 19.0], [106.03, 18.47], [105.68, 18.32], [105.53, 17.97], [105.0, 17.75], [104.75, 17.85], [104.5, 17.75], [104.25, 17.85], [104.0, 17.75], [103.47, 17.97], [103.32, 18.32], [103.25, 18.35], [103.0, 18.25], [102.75, 18.35], [102.5, 18.25], [101.97, 18.47], [101.82, 18.82], [101.47, 18.97], [101.25, 19.5]]]]}, "2013-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.25, 19.5], [101.47, 20.03], [102.0, 20.25], [102.25, 20.15], [102.5, 20.25], [102.8, 20.13], [102.97, 20.53], [103.5, 20.75], [104.03, 20.53], [104.18, 20.18], [104.25, 20.15], [104.32, 20.18], [104.35, 20.25], [104.25, 20.5], [104.47, 21.03], [105.0, 21.25], [105.25, 21.15], [105.5, 21.25], [105.75, 21.15], [105.82, 21.18], [105.97, 21.53], [106.32, 21.68], [106.47, 22.03], [107.0, 22.25], [107.25, 22.15], [107.5, 22.25], [108.03, 22.03], [108.25, 21.5], [108.03, 20.97], [107.5, 20.75], [107.25, 20.85], [107.18, 20.82], [107.03, 20.47], [106.68, 20.32], [106.65, 20.25], [106.75, 20.0], [106.53, 19.47], [106.18, 19.32], [106.15, 19.25], [106.25, 19.0], [106.03, 18.47], [105.68, 18.32], [105.53, 17.97], [105.0, 17.75], [104.75, 17.85], [104.5, 17.75], [104.25, 17.85], [104.0, 17.75], [103.47, 17.97], [103.32, 18.32], [103.25, 18.35], [103.0, 18.25], [102.75, 18.35], [102.5, 18.25], [101.97, 18.47], [101.82, 18.82], [101.47, 18.97], [101.25, 19.5]]]]}, "2013-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.25, 19.5], [101.47, 20.03], [102.0, 20.25], [102.25, 20.15], [102.5, 20.25], [102.8, 20.13], [102.97, 20.53], [103.5, 20.75], [104.03, 20.53], [104.18, 20.18], [104.25, 20.15], [104.32, 20.18], [104.35, 20.25], [104.25, 20.5], [104.47, 21.03], [105.0, 21.25], [105.25, 21.15], [105.5, 21.25], [105.75, 21.15], [105.82, 21.18], [105.97, 21.53], [106.32, 21.68], [106.47, 22.03], [107.0, 22.25], [107.25, 22.15], [107.5, 22.25], [108.03, 22.03], [108.25, 21.5], [108.03, 20.97], [107.5, 20.75], [107.25, 20.85], [107.18, 20.82], [107.03, 20.47], [106.68, 20.32], [106.65, 20.25], [106.75, 20.0], [106.53, 19.47], [106.18, 19.32], [106.15, 19.25], [106.25, 19.0], [106.03, 18.47], [105.68, 18.32], [105.53, 17.97], [105.0, 17.75], [104.75, 17.85], [104.5, 17.75], [104.25, 17.85], [104.0, 17.75], [103.47, 17.97], [103.32, 18.32], [103.25, 18.35], [103.0, 18.25], [102.75, 18.35], [102.5, 18.25], [101.97, 18.47], [101.82, 18.82], [101.47, 18.97], [101.25, 19.5]]]]}, "2013-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.32, 19.68], [104.47, 20.03], [105.0, 20.25], [105.53, 20.03], [105.75, 19.5], [105.54, 19.0], [105.75, 18.5], [105.53, 17.97], [105.0, 17.75], [104.75, 17.85], [104.5, 17.75], [104.25, 17.85], [104.0, 17.75], [103.47, 17.97], [103.25, 18.5], [103.47, 19.03], [103.82, 19.18], [103.97, 19.53], [104.32, 19.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.860177364278172}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.387460447830785}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.8499387832951, 23.97817848328458, 24.138680205219714, 23.34959377250999]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.873281491224418, 20.564694883864206, 20.830342871218704, 21.833169976156057]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.640518447013809, -2.4336874805444157, -2.1575049384659377, -2.0130810261590226]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.860177364278172, -3.623472969428235, -3.5343608065952026, -2.150514517334841]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8548374487602417, -1.7181589573259595, -1.507878997316611, -1.4678329051272625]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.278926411435367, -2.052061133091113, -1.8061763528148258, -1.5828478514949589]}}