{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:52.545155", "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-Jul-21_to_2013-Jul-24_80.0_42.5"}, "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": 2013070001166}, "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": "July 21 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 24 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": 50624.663749529034}, "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": ["China", "Kazakhstan", "Kyrgyzstan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.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": 42.5}, "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": 80.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "80.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 75.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.5, 43.25], [77.03, 43.03], [77.25, 42.5], [77.03, 41.97], [76.5, 41.75], [75.97, 41.97], [75.75, 42.5], [75.97, 43.03], [76.5, 43.25]]]]}, "2013-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.25, 41.5], [75.47, 42.03], [75.82, 42.18], [75.85, 42.25], [75.75, 42.5], [75.97, 43.03], [76.5, 43.25], [76.75, 43.15], [77.0, 43.25], [77.5, 43.04], [78.0, 43.25], [78.53, 43.03], [78.68, 42.68], [78.75, 42.65], [78.82, 42.68], [78.97, 43.03], [79.5, 43.25], [79.75, 43.15], [80.0, 43.25], [80.25, 43.15], [80.5, 43.25], [80.75, 43.15], [81.0, 43.25], [81.53, 43.03], [81.75, 42.5], [81.53, 41.97], [81.0, 41.75], [80.75, 41.85], [80.5, 41.75], [80.25, 41.85], [80.0, 41.75], [79.75, 41.85], [79.68, 41.82], [79.53, 41.47], [79.18, 41.32], [79.03, 40.97], [78.5, 40.75], [78.25, 40.85], [78.18, 40.82], [78.03, 40.47], [77.5, 40.25], [77.25, 40.35], [77.0, 40.25], [76.75, 40.35], [76.5, 40.25], [75.97, 40.47], [75.82, 40.82], [75.47, 40.97], [75.25, 41.5]]]]}, "2013-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.25, 41.5], [75.47, 42.03], [75.82, 42.18], [75.85, 42.25], [75.75, 42.5], [75.97, 43.03], [76.5, 43.25], [76.75, 43.15], [77.0, 43.25], [77.5, 43.04], [78.0, 43.25], [78.53, 43.03], [78.68, 42.68], [78.75, 42.65], [78.82, 42.68], [78.97, 43.03], [79.5, 43.25], [79.75, 43.15], [80.0, 43.25], [80.25, 43.15], [80.5, 43.25], [80.75, 43.15], [81.0, 43.25], [81.53, 43.03], [81.75, 42.5], [81.53, 41.97], [81.0, 41.75], [80.75, 41.85], [80.5, 41.75], [80.25, 41.85], [80.0, 41.75], [79.75, 41.85], [79.68, 41.82], [79.53, 41.47], [79.18, 41.32], [79.03, 40.97], [78.5, 40.75], [78.25, 40.85], [78.18, 40.82], [78.03, 40.47], [77.5, 40.25], [77.25, 40.35], [77.0, 40.25], [76.75, 40.35], [76.5, 40.25], [75.97, 40.47], [75.82, 40.82], [75.47, 40.97], [75.25, 41.5]]]]}, "2013-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.25, 41.5], [75.47, 42.03], [75.82, 42.18], [75.97, 42.53], [76.32, 42.68], [76.47, 43.03], [77.0, 43.25], [77.5, 43.04], [78.0, 43.25], [78.53, 43.03], [78.68, 42.68], [78.75, 42.65], [78.82, 42.68], [78.97, 43.03], [79.5, 43.25], [79.75, 43.15], [80.0, 43.25], [80.25, 43.15], [80.5, 43.25], [80.75, 43.15], [81.0, 43.25], [81.53, 43.03], [81.75, 42.5], [81.53, 41.97], [81.0, 41.75], [80.75, 41.85], [80.5, 41.75], [80.25, 41.85], [80.0, 41.75], [79.75, 41.85], [79.68, 41.82], [79.53, 41.47], [79.18, 41.32], [79.03, 40.97], [78.5, 40.75], [78.25, 40.85], [78.18, 40.82], [78.03, 40.47], [77.5, 40.25], [77.25, 40.35], [77.0, 40.25], [76.75, 40.35], [76.5, 40.25], [75.97, 40.47], [75.82, 40.82], [75.47, 40.97], [75.25, 41.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.145267523710288}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9390551340960163}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.65053706838529, 5.132199227241642, 5.6879347897125285, 5.7255695126459045]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.65053706838529, -0.07918442257783909, 0.519460883982731, 1.1309504945544404]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7870917221017635, -3.399378829343458, -2.8850794186002755, -2.5205936034987233]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7870917221017635, -4.145267523710288, -3.7219748767498686, -3.3404915539497324]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5577225103657597, -1.7123571120960224, -1.519338597973509, -1.350791295556159]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5577225103657597, -2.1461768044100102, -1.7677613107694867, -1.689183072944513]}}