The National Severe Storms Laboratory (NSSL) needs your help with our research As a, the Precipitation Identification Near the Ground project (W-PING) needs you, the Citizen Scientist, to watch and report on precipitation. PING is looking for volunteers of all ages and backgrounds to make observations - teachers, classes, families, everyone and anyone This app and associated web pages are your portal to providing observations to the research meteorologists at NSSL that will help us develop and refine algorithms that use the newly upgraded dual-polarization NEXRAD radars to detect and report on the type of precipitation that you see falling. NSSL scientists will compare your report with what the radar has detected and what our models think the atmosphere is doing, and use it to develop new technologies and techniques to determine what kind of precipitation such as snow, ice, rain or hail and its size is falling where.

mPing alternatives

Ham Tech

Ham Radio Exam Preparation for Technician Class License. Full functionality. Choose Study By Weakness to have Ham Tech present questions you are the weakest on.

  • rating 4.73529
  • size 3.3 MB

Ham Radio Exam - General

Ham Radio Exam - General will help the user pass his/her examination for a General Class FCC Amateur Radio License. Ham Radio Exam allows the user to review the correct answers to the official pool of questions that will appear on their General license exam. The question pool is valid until 01 July 2019.

  • rating 4.4
  • size 9.0 MB

Amateur Radio Exam Prep Free: Technician

Includes the NEW Technician Question Pool NOTE: This FREE version contains only 2 of the 10 subelements in the question pool. Click the Buy Now link in the app to get the FULL version. This app has these additional features: Portrait and Landscape support on iPad Swipe gestures to navigate between questions Tap on answer to select it Double-tap to zoom Figures on iPhone/iPod touch Buttons to skip to next/previous wrong answer in test results ARRL question number displayed on practice tests Configurable Test Settings Optional randomizing of test answers Optional auto-advance during test

  • size 17.6 MB

Ham Radio Exam Extra

Ham Radio Exam - Extra will help the user pass his/her examination for a Extra Class FCC Amateur Radio License. Ham Radio Exam allows the user to review the correct answers to the official pool of questions that will appear on their Extra license exam. Ham Radio Exam even allows the user to find an examination session near them and to follow ham radio news.

  • size 9.2 MB

GLOBE Observer

GLOBE Observer invites you to make observations about the Earth around you. Observations you collect and submit with this app are used by scientists to validate, interpret, and understand satellite data collected by NASA from space. The Global Learning and Observations to Benefit the Environment (GLOBE) Program is an international science and education program that provides students and the public worldwide with the opportunity to participate in data collection and the scientific process, and contribute meaningfully to our understanding of the Earth system and global environment.

  • rating 3.4
  • size 15.4 MB