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Observations of daily precipitation have been a part of GLOBE from the beginning. At the start, GLOBE’s participation model was that schools would take measurement following all of the original 17 protocols. Atmosphere temperature, precipitation, cloud, and soil moisture measurements were to be collected daily at a site easily accessible to the school. A permanent installation of an instrument shelter containing a max/min thermometer mounted to a post along with a rain gauge was the expected norm with other measurements taken nearby. Daily temperature and precipitation measurements were ...

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Posted in: Field Campaigns: EL NIÑO   GPM   GLOBE Science Topics: GLOBE PROTOCOLS   GLOBE Working Groups: SCIENCE WORKING GROUP   EDUCATION WORKING GROUP   Investigation Areas: ATMOSPHERE   Primary Audience: TRAINERS   TEACHERS   STUDENTS   PARTNERS   COUNTRY COORDINATORS   Teacher's Guide: DOCUMENT TYPES  
By Dixon Matlock Butler, posted Apr 14, 2017 1:37:20 PM

Consider the rain gauge used in GLOBE, CoCoRaHS, and other citizen science programs. Just four pieces plus 2 mounting screws – an inner graduated cylinder, an outer cylinder, a cap/funnel, and a mounting bracket. The area of the outer tube is exactly 10 times the areas of the inner tube and the cap/funnel, so the graduations on the inner cylinder can be spaced ten times further apart. Thus, 0.2 mm of rain fills the inner tube to a depth of 2.0 mm, which one can read. In addition, if heavy rainfall fills the inner cylinder, the rest of the rainfall overflows into the outer cylinder, ...

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Posted in: Curriculum: STEM   Field Campaigns: EL NIÑO   GPM   GLOBE Science Topics: BACKYARD SCIENCE   GLOBE PROTOCOLS   Investigation Areas: ATMOSPHERE   Primary Audience: TEACHERS   STUDENTS   ALUMNI