{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:59.795020", "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": "2020-Dec-09_to_2020-Dec-11_140.0_-69.5"}, "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": 2020120001933}, "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": "December 09 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 11 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 83045.4836520415}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -69.5}, "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": 140.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "140.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 136.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -70.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -67.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[135.47, -68.97], [135.823, -68.823], [135.97, -68.47], [136.5, -68.25], [136.75, -68.354], [136.823, -68.323], [136.854, -68.25], [136.75, -68.0], [136.97, -67.47], [137.323, -67.323], [137.47, -66.97], [138.0, -66.75], [138.25, -66.854], [138.5, -66.75], [138.75, -66.854], [139.0, -66.75], [139.25, -66.854], [139.5, -66.75], [139.75, -66.854], [140.0, -66.75], [140.25, -66.854], [140.5, -66.75], [140.75, -66.854], [141.0, -66.75], [141.53, -66.97], [141.677, -67.323], [141.75, -67.354], [142.0, -67.25], [142.25, -67.354], [142.5, -67.25], [143.03, -67.47], [143.177, -67.823], [143.53, -67.97], [143.75, -68.5], [143.646, -68.75], [143.75, -69.0], [143.53, -69.53], [143.0, -69.75], [142.75, -69.646], [142.677, -69.677], [142.53, -70.03], [142.0, -70.25], [141.75, -70.146], [141.677, -70.177], [141.53, -70.53], [141.0, -70.75], [140.75, -70.646], [140.5, -70.75], [140.25, -70.646], [140.177, -70.677], [140.03, -71.03], [139.5, -71.25], [139.25, -71.146], [139.0, -71.25], [138.75, -71.146], [138.5, -71.25], [138.25, -71.146], [138.0, -71.25], [137.75, -71.146], [137.5, -71.25], [137.25, -71.146], [137.0, -71.25], [136.75, -71.146], [136.5, -71.25], [135.97, -71.03], [135.823, -70.677], [135.47, -70.53], [135.25, -70.0], [135.354, -69.75], [135.25, -69.5], [135.47, -68.97]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[135.35355339059328, -69.75], [135.25, -69.5], [135.46966991411009, -68.96966991411009], [135.82322330470336, -68.82322330470336], [135.96966991411009, -68.46966991411009], [136.5, -68.25], [136.75, -68.35355339059328], [136.82322330470336, -68.32322330470336], [136.85355339059328, -68.25], [136.75, -68.0], [136.96966991411009, -67.46966991411009], [137.32322330470336, -67.32322330470336], [137.46966991411009, -66.96966991411009], [138.0, -66.75], [138.25, -66.85355339059328], [138.5, -66.75], [138.75, -66.85355339059328], [139.0, -66.75], [139.25, -66.85355339059328], [139.5, -66.75], [139.75, -66.85355339059328], [140.0, -66.75], [140.25, -66.85355339059328], [140.5, -66.75], [140.75, -66.85355339059328], [141.0, -66.75], [141.53033008588991, -66.96966991411009], [141.67677669529664, -67.32322330470336], [141.75, -67.35355339059328], [142.0, -67.25], [142.25, -67.35355339059328], [142.5, -67.25], [143.03033008588991, -67.46966991411009], [143.17677669529664, -67.82322330470336], [143.53033008588991, -67.96966991411009], [143.75, -68.5], [143.64644660940672, -68.75], [143.75, -69.0], [143.53033008588991, -69.53033008588991], [143.0, -69.75], [142.75, -69.64644660940672], [142.67677669529664, -69.67677669529664], [142.53033008588991, -70.03033008588991], [142.0, -70.25], [141.75, -70.14644660940672], [141.67677669529664, -70.17677669529664], [141.53033008588991, -70.53033008588991], [141.0, -70.75], [140.75, -70.64644660940672], [140.5, -70.75], [140.25, -70.64644660940672], [140.17677669529664, -70.67677669529664], [140.03033008588991, -71.03033008588991], [139.5, -71.25], [139.25, -71.14644660940672], [139.0, -71.25], [138.75, -71.14644660940672], [138.5, -71.25], [138.25, -71.14644660940672], [138.0, -71.25], [137.75, -71.14644660940672], [137.5, -71.25], [137.25, -71.14644660940672], [137.0, -71.25], [136.75, -71.14644660940672], [136.5, -71.25], [135.96966991411009, -71.03033008588991], [135.82322330470336, -70.67677669529664], [135.46966991411009, -70.53033008588991], [135.25, -70.0], [135.35355339059328, -69.75]]]}, "2020-12-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[135.35355339059328, -69.75], [135.25, -69.5], [135.46966991411009, -68.96966991411009], [135.82322330470336, -68.82322330470336], [135.96966991411009, -68.46966991411009], [136.5, -68.25], [136.75, -68.35355339059328], [136.82322330470336, -68.32322330470336], [136.85355339059328, -68.25], [136.75, -68.0], [136.96966991411009, -67.46966991411009], [137.32322330470336, -67.32322330470336], [137.46966991411009, -66.96966991411009], [138.0, -66.75], [138.25, -66.85355339059328], [138.5, -66.75], [138.75, -66.85355339059328], [139.0, -66.75], [139.25, -66.85355339059328], [139.5, -66.75], [139.75, -66.85355339059328], [140.0, -66.75], [140.25, -66.85355339059328], [140.5, -66.75], [140.75, -66.85355339059328], [141.0, -66.75], [141.53033008588991, -66.96966991411009], [141.67677669529664, -67.32322330470336], [141.75, -67.35355339059328], [142.0, -67.25], [142.25, -67.35355339059328], [142.5, -67.25], [143.03033008588991, -67.46966991411009], [143.17677669529664, -67.82322330470336], [143.53033008588991, -67.96966991411009], [143.75, -68.5], [143.64644660940672, -68.75], [143.75, -69.0], [143.53033008588991, -69.53033008588991], [143.0, -69.75], [142.75, -69.64644660940672], [142.67677669529664, -69.67677669529664], [142.53033008588991, -70.03033008588991], [142.0, -70.25], [141.75, -70.14644660940672], [141.67677669529664, -70.17677669529664], [141.53033008588991, -70.53033008588991], [141.0, -70.75], [140.75, -70.64644660940672], [140.5, -70.75], [140.25, -70.64644660940672], [140.17677669529664, -70.67677669529664], [140.03033008588991, -71.03033008588991], [139.5, -71.25], [139.25, -71.14644660940672], [139.0, -71.25], [138.75, -71.14644660940672], [138.5, -71.25], [138.25, -71.14644660940672], [138.0, -71.25], [137.75, -71.14644660940672], [137.5, -71.25], [137.25, -71.14644660940672], [137.0, -71.25], [136.75, -71.14644660940672], [136.5, -71.25], [135.96966991411009, -71.03033008588991], [135.82322330470336, -70.67677669529664], [135.46966991411009, -70.53033008588991], [135.25, -70.0], [135.35355339059328, -69.75]]]}, "2020-12-11T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[135.35355339059328, -69.75], [135.25, -69.5], [135.46966991411009, -68.96966991411009], [135.82322330470336, -68.82322330470336], [135.96966991411009, -68.46966991411009], [136.5, -68.25], [136.75, -68.35355339059328], [136.82322330470336, -68.32322330470336], [136.85355339059328, -68.25], [136.75, -68.0], [136.96966991411009, -67.46966991411009], [137.32322330470336, -67.32322330470336], [137.46966991411009, -66.96966991411009], [138.0, -66.75], [138.25, -66.85355339059328], [138.5, -66.75], [138.75, -66.85355339059328], [139.0, -66.75], [139.25, -66.85355339059328], [139.5, -66.75], [139.75, -66.85355339059328], [140.0, -66.75], [140.25, -66.85355339059328], [140.5, -66.75], [140.75, -66.85355339059328], [141.0, -66.75], [141.53033008588991, -66.96966991411009], [141.67677669529664, -67.32322330470336], [141.75, -67.35355339059328], [142.0, -67.25], [142.25, -67.35355339059328], [142.5, -67.25], [143.03033008588991, -67.46966991411009], [143.17677669529664, -67.82322330470336], [143.53033008588991, -67.96966991411009], [143.75, -68.5], [143.64644660940672, -68.75], [143.75, -69.0], [143.53033008588991, -69.53033008588991], [143.0, -69.75], [142.75, -69.64644660940672], [142.67677669529664, -69.67677669529664], [142.53033008588991, -70.03033008588991], [142.0, -70.25], [141.75, -70.14644660940672], [141.67677669529664, -70.17677669529664], [141.53033008588991, -70.53033008588991], [141.0, -70.75], [140.75, -70.64644660940672], [140.5, -70.75], [140.25, -70.64644660940672], [140.17677669529664, -70.67677669529664], [140.03033008588991, -71.03033008588991], [139.5, -71.25], [139.25, -71.14644660940672], [139.0, -71.25], [138.75, -71.14644660940672], [138.5, -71.25], [138.25, -71.14644660940672], [138.0, -71.25], [137.75, -71.14644660940672], [137.5, -71.25], [137.25, -71.14644660940672], [137.0, -71.25], [136.75, -71.14644660940672], [136.5, -71.25], [135.96966991411009, -71.03033008588991], [135.82322330470336, -70.67677669529664], [135.46966991411009, -70.53033008588991], [135.25, -70.0], [135.35355339059328, -69.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.566283706766654}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.65578297024718}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-15.927501005802469, -14.881754479238055, -15.715856255639153]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-7.412715177995949, -8.093532813926231, -8.465655500283788]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.437370759223998, 6.3087787526249075, 5.2211993988926455]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.923450961419491, 7.566283706766654, 6.702602725288273]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7193607721010555, 1.9603973118262978, 1.6066831492994793]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.211976766219629, 2.2285661007509163, 1.780676423300948]}}