{"action":"created","issue":{"url":"https://api.github.com/repos/jspaaks/baltrad-node/issues/14","labels_url":"https://api.github.com/repos/jspaaks/baltrad-node/issues/14/labels{/name}","comments_url":"https://api.github.com/repos/jspaaks/baltrad-node/issues/14/comments","events_url":"https://api.github.com/repos/jspaaks/baltrad-node/issues/14/events","html_url":"https://github.com/jspaaks/baltrad-node/issues/14","id":57354553,"number":14,"title":"Calculate bird density from reflectivity","user":{"login":"adokter","id":8268415,"avatar_url":"https://avatars.githubusercontent.com/u/8268415?v=3","gravatar_id":"","url":"https://api.github.com/users/adokter","html_url":"https://github.com/adokter","followers_url":"https://api.github.com/users/adokter/followers","following_url":"https://api.github.com/users/adokter/following{/other_user}","gists_url":"https://api.github.com/users/adokter/gists{/gist_id}","starred_url":"https://api.github.com/users/adokter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/adokter/subscriptions","organizations_url":"https://api.github.com/users/adokter/orgs","repos_url":"https://api.github.com/users/adokter/repos","events_url":"https://api.github.com/users/adokter/events{/privacy}","received_events_url":"https://api.github.com/users/adokter/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2015-02-11T18:16:09Z","updated_at":"2015-02-12T10:27:37Z","closed_at":null,"body":"Adriaan, please elaborate these steps:\r\n1) average logarithmic dBZ values into a linear Z value\r\n2) Calculate the DBZFACTOR from the radar wavelength\r\n3) assume a typical bird radar cross-section\r\n4) calculate bird density"},"comment":{"url":"https://api.github.com/repos/jspaaks/baltrad-node/issues/comments/74048826","html_url":"https://github.com/jspaaks/baltrad-node/issues/14#issuecomment-74048826","issue_url":"https://api.github.com/repos/jspaaks/baltrad-node/issues/14","id":74048826,"user":{"login":"adokter","id":8268415,"avatar_url":"https://avatars.githubusercontent.com/u/8268415?v=3","gravatar_id":"","url":"https://api.github.com/users/adokter","html_url":"https://github.com/adokter","followers_url":"https://api.github.com/users/adokter/followers","following_url":"https://api.github.com/users/adokter/following{/other_user}","gists_url":"https://api.github.com/users/adokter/gists{/gist_id}","starred_url":"https://api.github.com/users/adokter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/adokter/subscriptions","organizations_url":"https://api.github.com/users/adokter/orgs","repos_url":"https://api.github.com/users/adokter/repos","events_url":"https://api.github.com/users/adokter/events{/privacy}","received_events_url":"https://api.github.com/users/adokter/received_events","type":"User","site_admin":false},"created_at":"2015-02-12T10:27:37Z","updated_at":"2015-02-12T10:27:37Z","body":"3) the bird radar cross section is a constant that needs to be assumed. The default value is `SIGMABIRD=11.0` as in \r\nhttps://github.com/NLeSC/enram/blob/master/doc/vol2bird-adriaans-version-20140716/vol2birdprof_h5.c#L88"}}