{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:18.118392", "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-Sep-27_to_2020-Oct-01_58.0_36.5"}, "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": 2020090000721}, "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": "September 27 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 298915.2217432647}, "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": ["Iran, Islamic Republic of", "Turkmenistan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 36.5}, "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": 58.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "58.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 54.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 64.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[57.75, 35.854], [57.5, 35.75], [57.25, 35.854], [57.0, 35.75], [56.75, 35.854], [56.5, 35.75], [56.25, 35.854], [56.177, 35.823], [56.03, 35.47], [55.5, 35.25], [54.97, 35.47], [54.823, 35.823], [54.75, 35.854], [54.5, 35.75], [53.97, 35.97], [53.75, 36.5], [53.97, 37.03], [54.5, 37.25], [54.75, 37.146], [55.0, 37.25], [55.302, 37.125], [55.47, 37.53], [55.875, 37.698], [55.75, 38.0], [55.854, 38.25], [55.823, 38.323], [55.47, 38.47], [55.25, 39.0], [55.47, 39.53], [56.0, 39.75], [56.25, 39.646], [56.323, 39.677], [56.47, 40.03], [57.0, 40.25], [57.25, 40.146], [57.323, 40.177], [57.47, 40.53], [58.0, 40.75], [58.25, 40.646], [58.323, 40.677], [58.47, 41.03], [59.0, 41.25], [59.5, 41.043], [60.0, 41.25], [60.25, 41.146], [60.323, 41.177], [60.47, 41.53], [61.0, 41.75], [61.25, 41.646], [61.5, 41.75], [62.03, 41.53], [62.25, 41.0], [62.146, 40.75], [62.177, 40.677], [62.53, 40.53], [62.677, 40.177], [63.03, 40.03], [63.25, 39.5], [63.146, 39.25], [63.177, 39.177], [63.25, 39.146], [63.5, 39.25], [64.03, 39.03], [64.177, 38.677], [64.25, 38.646], [64.5, 38.75], [65.03, 38.53], [65.25, 38.0], [65.146, 37.75], [65.25, 37.5], [65.146, 37.25], [65.25, 37.0], [65.03, 36.47], [64.5, 36.25], [64.0, 36.457], [63.677, 36.323], [63.53, 35.97], [63.0, 35.75], [62.75, 35.854], [62.677, 35.823], [62.53, 35.47], [62.0, 35.25], [61.75, 35.354], [61.5, 35.25], [61.25, 35.354], [61.0, 35.25], [60.75, 35.354], [60.5, 35.25], [59.97, 35.47], [59.823, 35.823], [59.47, 35.97], [59.323, 36.323], [59.25, 36.354], [59.177, 36.323], [59.03, 35.97], [58.5, 35.75], [58.25, 35.854], [58.0, 35.75], [57.75, 35.854]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[59.82322330470336, 39.82322330470336], [59.46966991411009, 39.96966991411009], [59.25, 40.5], [59.46966991411009, 41.03033008588991], [60.0, 41.25], [60.25, 41.14644660940672], [60.32322330470336, 41.17677669529664], [60.46966991411009, 41.53033008588991], [61.0, 41.75], [61.25, 41.64644660940672], [61.5, 41.75], [62.03033008588991, 41.53033008588991], [62.25, 41.0], [62.14644660940672, 40.75], [62.17677669529664, 40.67677669529664], [62.53033008588991, 40.53033008588991], [62.75, 40.0], [62.53033008588991, 39.46966991411009], [62.17677669529664, 39.32322330470336], [62.03033008588991, 38.96966991411009], [61.5, 38.75], [61.25, 38.85355339059328], [61.0, 38.75], [60.46966991411009, 38.96966991411009], [60.32322330470336, 39.32322330470336], [59.96966991411009, 39.46966991411009], [59.82322330470336, 39.82322330470336]]]}, "2020-09-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[54.75, 35.85355339059328], [54.5, 35.75], [53.96966991411009, 35.96966991411009], [53.75, 36.5], [53.96966991411009, 37.03033008588991], [54.5, 37.25], [54.75, 37.14644660940672], [55.0, 37.25], [55.30177669529664, 37.125], [55.46966991411009, 37.53033008588991], [55.875, 37.69822330470336], [55.75, 38.0], [55.85355339059328, 38.25], [55.82322330470336, 38.32322330470336], [55.46966991411009, 38.46966991411009], [55.25, 39.0], [55.46966991411009, 39.53033008588991], [56.0, 39.75], [56.25, 39.64644660940672], [56.32322330470336, 39.67677669529664], [56.46966991411009, 40.03033008588991], [57.0, 40.25], [57.25, 40.14644660940672], [57.32322330470336, 40.17677669529664], [57.46966991411009, 40.53033008588991], [58.0, 40.75], [58.25, 40.64644660940672], [58.32322330470336, 40.67677669529664], [58.46966991411009, 41.03033008588991], [59.0, 41.25], [59.5, 41.04289321881345], [60.0, 41.25], [60.25, 41.14644660940672], [60.32322330470336, 41.17677669529664], [60.46966991411009, 41.53033008588991], [61.0, 41.75], [61.25, 41.64644660940672], [61.5, 41.75], [62.03033008588991, 41.53033008588991], [62.25, 41.0], [62.14644660940672, 40.75], [62.17677669529664, 40.67677669529664], [62.53033008588991, 40.53033008588991], [62.67677669529664, 40.17677669529664], [63.03033008588991, 40.03033008588991], [63.25, 39.5], [63.14644660940672, 39.25], [63.17677669529664, 39.17677669529664], [63.25, 39.14644660940672], [63.5, 39.25], [64.03033008588991, 39.03033008588991], [64.17677669529664, 38.67677669529664], [64.25, 38.64644660940672], [64.5, 38.75], [65.03033008588991, 38.53033008588991], [65.25, 38.0], [65.14644660940672, 37.75], [65.25, 37.5], [65.14644660940672, 37.25], [65.25, 37.0], [65.03033008588991, 36.46966991411009], [64.5, 36.25], [64.0, 36.45710678118655], [63.67677669529664, 36.32322330470336], [63.53033008588991, 35.96966991411009], [63.0, 35.75], [62.75, 35.85355339059328], [62.67677669529664, 35.82322330470336], [62.53033008588991, 35.46966991411009], [62.0, 35.25], [61.75, 35.35355339059328], [61.5, 35.25], [61.25, 35.35355339059328], [61.0, 35.25], [60.75, 35.35355339059328], [60.5, 35.25], [59.96966991411009, 35.46966991411009], [59.82322330470336, 35.82322330470336], [59.46966991411009, 35.96966991411009], [59.32322330470336, 36.32322330470336], [59.25, 36.35355339059328], [59.17677669529664, 36.32322330470336], [59.03033008588991, 35.96966991411009], [58.5, 35.75], [58.25, 35.85355339059328], [58.0, 35.75], [57.75, 35.85355339059328], [57.5, 35.75], [57.25, 35.85355339059328], [57.0, 35.75], [56.75, 35.85355339059328], [56.5, 35.75], [56.25, 35.85355339059328], [56.17677669529664, 35.82322330470336], [56.03033008588991, 35.46966991411009], [55.5, 35.25], [54.96966991411009, 35.46966991411009], [54.82322330470336, 35.82322330470336], [54.75, 35.85355339059328]]]}, "2020-09-29T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[54.75, 35.85355339059328], [54.5, 35.75], [53.96966991411009, 35.96966991411009], [53.75, 36.5], [53.96966991411009, 37.03033008588991], [54.5, 37.25], [54.75, 37.14644660940672], [55.0, 37.25], [55.30177669529664, 37.125], [55.46966991411009, 37.53033008588991], [55.875, 37.69822330470336], [55.75, 38.0], [55.85355339059328, 38.25], [55.82322330470336, 38.32322330470336], [55.46966991411009, 38.46966991411009], [55.25, 39.0], [55.46966991411009, 39.53033008588991], [56.0, 39.75], [56.25, 39.64644660940672], [56.32322330470336, 39.67677669529664], [56.46966991411009, 40.03033008588991], [57.0, 40.25], [57.25, 40.14644660940672], [57.32322330470336, 40.17677669529664], [57.46966991411009, 40.53033008588991], [58.0, 40.75], [58.25, 40.64644660940672], [58.32322330470336, 40.67677669529664], [58.46966991411009, 41.03033008588991], [59.0, 41.25], [59.5, 41.04289321881345], [60.0, 41.25], [60.25, 41.14644660940672], [60.32322330470336, 41.17677669529664], [60.46966991411009, 41.53033008588991], [61.0, 41.75], [61.25, 41.64644660940672], [61.5, 41.75], [62.03033008588991, 41.53033008588991], [62.25, 41.0], [62.14644660940672, 40.75], [62.17677669529664, 40.67677669529664], [62.53033008588991, 40.53033008588991], [62.67677669529664, 40.17677669529664], [63.03033008588991, 40.03033008588991], [63.25, 39.5], [63.14644660940672, 39.25], [63.17677669529664, 39.17677669529664], [63.25, 39.14644660940672], [63.5, 39.25], [64.03033008588991, 39.03033008588991], [64.17677669529664, 38.67677669529664], [64.25, 38.64644660940672], [64.5, 38.75], [65.03033008588991, 38.53033008588991], [65.25, 38.0], [65.14644660940672, 37.75], [65.25, 37.5], [65.14644660940672, 37.25], [65.25, 37.0], [65.03033008588991, 36.46966991411009], [64.5, 36.25], [64.0, 36.45710678118655], [63.67677669529664, 36.32322330470336], [63.53033008588991, 35.96966991411009], [63.0, 35.75], [62.75, 35.85355339059328], [62.67677669529664, 35.82322330470336], [62.53033008588991, 35.46966991411009], [62.0, 35.25], [61.75, 35.35355339059328], [61.5, 35.25], [61.25, 35.35355339059328], [61.0, 35.25], [60.75, 35.35355339059328], [60.5, 35.25], [59.96966991411009, 35.46966991411009], [59.82322330470336, 35.82322330470336], [59.46966991411009, 35.96966991411009], [59.32322330470336, 36.32322330470336], [59.25, 36.35355339059328], [59.17677669529664, 36.32322330470336], [59.03033008588991, 35.96966991411009], [58.5, 35.75], [58.25, 35.85355339059328], [58.0, 35.75], [57.75, 35.85355339059328], [57.5, 35.75], [57.25, 35.85355339059328], [57.0, 35.75], [56.75, 35.85355339059328], [56.5, 35.75], [56.25, 35.85355339059328], [56.17677669529664, 35.82322330470336], [56.03033008588991, 35.46966991411009], [55.5, 35.25], [54.96966991411009, 35.46966991411009], [54.82322330470336, 35.82322330470336], [54.75, 35.85355339059328]]]}, "2020-09-30T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[54.75, 35.85355339059328], [54.5, 35.75], [53.96966991411009, 35.96966991411009], [53.75, 36.5], [53.96966991411009, 37.03033008588991], [54.5, 37.25], [54.75, 37.14644660940672], [55.0, 37.25], [55.30177669529664, 37.125], [55.46966991411009, 37.53033008588991], [55.875, 37.69822330470336], [55.75, 38.0], [55.85355339059328, 38.25], [55.82322330470336, 38.32322330470336], [55.46966991411009, 38.46966991411009], [55.25, 39.0], [55.46966991411009, 39.53033008588991], [56.0, 39.75], [56.25, 39.64644660940672], [56.32322330470336, 39.67677669529664], [56.46966991411009, 40.03033008588991], [57.0, 40.25], [57.25, 40.14644660940672], [57.32322330470336, 40.17677669529664], [57.46966991411009, 40.53033008588991], [58.0, 40.75], [58.25, 40.64644660940672], [58.32322330470336, 40.67677669529664], [58.46966991411009, 41.03033008588991], [59.0, 41.25], [59.53033008588991, 41.03033008588991], [59.67677669529664, 40.67677669529664], [59.75, 40.64644660940672], [60.0, 40.75], [60.53033008588991, 40.53033008588991], [60.67677669529664, 40.17677669529664], [61.03033008588991, 40.03033008588991], [61.17677669529664, 39.67677669529664], [61.25, 39.64644660940672], [61.5, 39.75], [61.75, 39.64644660940672], [61.82322330470336, 39.67677669529664], [61.96966991411009, 40.03033008588991], [62.5, 40.25], [63.03033008588991, 40.03033008588991], [63.25, 39.5], [63.14644660940672, 39.25], [63.17677669529664, 39.17677669529664], [63.25, 39.14644660940672], [63.5, 39.25], [64.03033008588991, 39.03033008588991], [64.17677669529664, 38.67677669529664], [64.25, 38.64644660940672], [64.5, 38.75], [65.03033008588991, 38.53033008588991], [65.25, 38.0], [65.14644660940672, 37.75], [65.25, 37.5], [65.14644660940672, 37.25], [65.25, 37.0], [65.03033008588991, 36.46966991411009], [64.5, 36.25], [64.0, 36.45710678118655], [63.67677669529664, 36.32322330470336], [63.53033008588991, 35.96966991411009], [63.0, 35.75], [62.75, 35.85355339059328], [62.67677669529664, 35.82322330470336], [62.53033008588991, 35.46966991411009], [62.0, 35.25], [61.75, 35.35355339059328], [61.5, 35.25], [61.25, 35.35355339059328], [61.0, 35.25], [60.75, 35.35355339059328], [60.5, 35.25], [59.96966991411009, 35.46966991411009], [59.82322330470336, 35.82322330470336], [59.46966991411009, 35.96966991411009], [59.32322330470336, 36.32322330470336], [59.25, 36.35355339059328], [59.17677669529664, 36.32322330470336], [59.03033008588991, 35.96966991411009], [58.5, 35.75], [58.25, 35.85355339059328], [58.0, 35.75], [57.75, 35.85355339059328], [57.5, 35.75], [57.25, 35.85355339059328], [57.0, 35.75], [56.75, 35.85355339059328], [56.5, 35.75], [56.25, 35.85355339059328], [56.17677669529664, 35.82322330470336], [56.03033008588991, 35.46966991411009], [55.5, 35.25], [54.96966991411009, 35.46966991411009], [54.82322330470336, 35.82322330470336], [54.75, 35.85355339059328]]]}, "2020-10-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[57.25, 36.5], [57.46966991411009, 37.03033008588991], [58.0, 37.25], [58.53033008588991, 37.03033008588991], [58.75, 36.5], [58.53033008588991, 35.96966991411009], [58.0, 35.75], [57.46966991411009, 35.96966991411009], [57.25, 36.5]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.4088660658633785}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.756165020631786}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.139314653490544, 14.596582434757636, 13.68884622044709, 13.677032472860333, 15.399437361660148]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.509920483493033, 7.732197475865576, 6.224096777397449, 7.462094658950491, 15.399437361660148]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.391938282373924, -5.449498442367251, -6.025219330496207, -5.96042951067941, -4.0798364976553785]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.549653319263086, -7.129185607254897, -7.4088660658633785, -7.19964445640926, -4.0798364976553785]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.329534587084232, -1.6833871650070702, -1.7806490821750158, -1.6863626050611251, -1.4071930852347816]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3626310133499155, -2.206354611231257, -2.517188644963627, -2.2848409473655438, -1.4071930852347816]}}