{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:56.076007", "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": "2018-Aug-27_to_2018-Sep-03_98.5_38.5"}, "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": 2018080003058}, "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": "August 27 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 03 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 94938.97905506816}, "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"]}, "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": 38.5}, "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": 98.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 96.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 102.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 40.03], [96.5, 40.25], [97.0, 40.04], [97.5, 40.25], [98.03, 40.03], [98.18, 39.68], [98.25, 39.65], [98.5, 39.75], [98.75, 39.65], [99.0, 39.75], [99.53, 39.53], [99.68, 39.18], [100.03, 39.03], [100.18, 38.68], [100.25, 38.65], [100.5, 38.75], [100.75, 38.65], [101.0, 38.75], [101.25, 38.65], [101.5, 38.75], [102.03, 38.53], [102.18, 38.18], [102.53, 38.03], [102.75, 37.5], [102.65, 37.25], [102.75, 37.0], [102.53, 36.47], [102.0, 36.25], [101.75, 36.35], [101.5, 36.25], [101.25, 36.35], [101.0, 36.25], [100.75, 36.35], [100.5, 36.25], [100.0, 36.46], [99.5, 36.25], [99.0, 36.46], [98.5, 36.25], [97.97, 36.47], [97.82, 36.82], [97.47, 36.97], [97.32, 37.32], [96.97, 37.47], [96.82, 37.82], [96.47, 37.97], [96.32, 38.32], [95.97, 38.47], [95.75, 39.0], [95.85, 39.25], [95.75, 39.5], [95.97, 40.03]]]]}, "2018-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 40.03], [96.5, 40.25], [97.0, 40.04], [97.5, 40.25], [98.03, 40.03], [98.18, 39.68], [98.25, 39.65], [98.5, 39.75], [98.75, 39.65], [99.0, 39.75], [99.53, 39.53], [99.68, 39.18], [100.03, 39.03], [100.18, 38.68], [100.25, 38.65], [100.5, 38.75], [100.75, 38.65], [101.0, 38.75], [101.25, 38.65], [101.5, 38.75], [102.03, 38.53], [102.18, 38.18], [102.53, 38.03], [102.75, 37.5], [102.65, 37.25], [102.75, 37.0], [102.53, 36.47], [102.0, 36.25], [101.75, 36.35], [101.5, 36.25], [101.25, 36.35], [101.0, 36.25], [100.75, 36.35], [100.5, 36.25], [100.0, 36.46], [99.5, 36.25], [99.0, 36.46], [98.5, 36.25], [97.97, 36.47], [97.82, 36.82], [97.47, 36.97], [97.32, 37.32], [97.25, 37.35], [97.0, 37.25], [96.47, 37.47], [96.25, 38.0], [96.35, 38.25], [96.32, 38.32], [95.97, 38.47], [95.75, 39.0], [95.85, 39.25], [95.75, 39.5], [95.97, 40.03]]]]}, "2018-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.97, 40.03], [96.5, 40.25], [97.0, 40.04], [97.5, 40.25], [98.03, 40.03], [98.18, 39.68], [98.25, 39.65], [98.5, 39.75], [98.75, 39.65], [99.0, 39.75], [99.53, 39.53], [99.68, 39.18], [100.03, 39.03], [100.18, 38.68], [100.25, 38.65], [100.5, 38.75], [100.75, 38.65], [101.0, 38.75], [101.25, 38.65], [101.5, 38.75], [102.03, 38.53], [102.18, 38.18], [102.53, 38.03], [102.75, 37.5], [102.65, 37.25], [102.75, 37.0], [102.53, 36.47], [102.0, 36.25], [101.75, 36.35], [101.5, 36.25], [101.25, 36.35], [101.0, 36.25], [100.75, 36.35], [100.5, 36.25], [100.0, 36.46], [99.5, 36.25], [99.0, 36.46], [98.5, 36.25], [97.97, 36.47], [97.82, 36.82], [97.47, 36.97], [97.32, 37.32], [97.25, 37.35], [97.0, 37.25], [96.47, 37.47], [96.25, 38.0], [96.35, 38.25], [96.32, 38.32], [95.97, 38.47], [95.75, 39.0], [95.85, 39.25], [95.75, 39.5], [95.97, 40.03]]]]}, "2018-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.47, 39.03], [97.0, 39.25], [97.25, 39.15], [97.5, 39.25], [97.75, 39.15], [98.0, 39.25], [98.25, 39.15], [98.5, 39.25], [98.75, 39.15], [99.0, 39.25], [99.25, 39.15], [99.5, 39.25], [100.03, 39.03], [100.18, 38.68], [100.25, 38.65], [100.5, 38.75], [100.75, 38.65], [101.0, 38.75], [101.53, 38.53], [101.68, 38.18], [102.03, 38.03], [102.25, 37.5], [102.03, 36.97], [101.5, 36.75], [101.25, 36.85], [101.18, 36.82], [101.03, 36.47], [100.5, 36.25], [99.97, 36.47], [99.75, 37.0], [99.85, 37.25], [99.82, 37.32], [99.75, 37.35], [99.68, 37.32], [99.53, 36.97], [99.0, 36.75], [98.47, 36.97], [98.32, 37.32], [98.25, 37.35], [98.0, 37.25], [97.75, 37.35], [97.5, 37.25], [97.25, 37.35], [97.0, 37.25], [96.47, 37.47], [96.25, 38.0], [96.35, 38.25], [96.25, 38.5], [96.47, 39.03]]]]}, "2018-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.0, 39.25], [98.25, 39.15], [98.5, 39.25], [98.75, 39.15], [99.0, 39.25], [99.25, 39.15], [99.5, 39.25], [100.03, 39.03], [100.18, 38.68], [100.25, 38.65], [100.5, 38.75], [101.03, 38.53], [101.18, 38.18], [101.25, 38.15], [101.5, 38.25], [102.03, 38.03], [102.25, 37.5], [102.03, 36.97], [101.5, 36.75], [101.25, 36.85], [101.0, 36.75], [100.75, 36.85], [100.5, 36.75], [100.25, 36.85], [100.0, 36.75], [99.75, 36.85], [99.5, 36.75], [98.97, 36.97], [98.82, 37.32], [98.75, 37.35], [98.5, 37.25], [98.25, 37.35], [98.0, 37.25], [97.75, 37.35], [97.5, 37.25], [96.97, 37.47], [96.75, 38.0], [96.97, 38.53], [97.32, 38.68], [97.47, 39.03], [98.0, 39.25]]]]}, "2018-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.75, 38.5], [96.97, 39.03], [97.5, 39.25], [97.75, 39.15], [98.0, 39.25], [98.25, 39.15], [98.5, 39.25], [99.03, 39.03], [99.18, 38.68], [99.53, 38.53], [99.68, 38.18], [99.75, 38.15], [100.0, 38.25], [100.25, 38.15], [100.5, 38.25], [101.03, 38.03], [101.25, 37.5], [101.03, 36.97], [100.5, 36.75], [100.25, 36.85], [100.0, 36.75], [99.75, 36.85], [99.5, 36.75], [98.97, 36.97], [98.82, 37.32], [98.75, 37.35], [98.5, 37.25], [98.25, 37.35], [98.0, 37.25], [97.47, 37.47], [97.32, 37.82], [96.97, 37.97], [96.75, 38.5]]]]}, "2018-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.75, 38.5], [96.97, 39.03], [97.5, 39.25], [97.75, 39.15], [98.0, 39.25], [98.25, 39.15], [98.5, 39.25], [99.03, 39.03], [99.18, 38.68], [99.53, 38.53], [99.68, 38.18], [99.75, 38.15], [100.0, 38.25], [100.25, 38.15], [100.5, 38.25], [101.03, 38.03], [101.25, 37.5], [101.03, 36.97], [100.5, 36.75], [100.25, 36.85], [100.0, 36.75], [99.75, 36.85], [99.5, 36.75], [98.97, 36.97], [98.82, 37.32], [98.75, 37.35], [98.5, 37.25], [98.25, 37.35], [98.0, 37.25], [97.47, 37.47], [97.32, 37.82], [96.97, 37.97], [96.75, 38.5]]]]}, "2018-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.75, 38.5], [96.97, 39.03], [97.5, 39.25], [97.75, 39.15], [98.0, 39.25], [98.25, 39.15], [98.5, 39.25], [99.03, 39.03], [99.18, 38.68], [99.53, 38.53], [99.68, 38.18], [99.75, 38.15], [100.0, 38.25], [100.25, 38.15], [100.5, 38.25], [101.03, 38.03], [101.25, 37.5], [101.03, 36.97], [100.5, 36.75], [100.25, 36.85], [100.0, 36.75], [99.75, 36.85], [99.5, 36.75], [98.97, 36.97], [98.82, 37.32], [98.75, 37.35], [98.5, 37.25], [98.25, 37.35], [98.0, 37.25], [97.47, 37.47], [97.32, 37.82], [96.97, 37.97], [96.75, 38.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.458365652260284}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.185842958059254}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.061073032313345, 10.233178343899056, 9.796055640367172, 8.60240449562184, 8.517403588735931, 7.602136880139085, 8.450368488348772, 9.265579593922553]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.900782863085738, 15.047132492242042, 15.264876224586033, 14.001399375248809, 10.680331220235814, 9.801471645428592, 10.057081132154906, 10.464159905720521]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.042364066947062, 4.439314825863282, 4.0810737217219755, 3.7598514757675856, 3.954629284956642, 3.6201603386856442, 4.6072474584666265, 5.601904651274777]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.468157147280692, 5.74583226186337, 4.987615026364949, 4.190860248706599, 4.465555959439598, 3.830894311015129, 5.757439998547454, 7.458365652260284]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.592764063013006, 1.7370877260273043, 1.5791540674646762, 1.3516832947493236, 1.3954742679137473, 1.2884303703851074, 1.5901075496340389, 1.8743585690256066]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0279685124920324, 2.1169849980657203, 1.9141378762591397, 1.4415784384840238, 1.533492409589689, 1.329568292874984, 1.800412069558671, 2.389530062256483]}}