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Your search for "reflectivity" gave back 3 results.

Active and Passive Remote Sensing Diagram

Diagram which illustrates active and passive remote sensing
Primary Topic: 
Technology
Subtopics: 
Satellites, Remote Sensing
Type: 
Image
Audience: 
Informal, General, 6 - 8, 9 - 12
Keywords: 
passive, active, radar, radiometer, frequency
Summary: 
This diagram illustrates the differences between active and passive remote sensing.  TRMM and GPM rely on active and passive instruments to measure the properties of precipitation from space.

Ground Validation and OLYMPEX Webquest

Primary Topic: 
Technology
Subtopics: 
Precipitation, Remote Sensing, STEM Careers, Data, Freshwater Resources
Type: 
Interactive
Audience: 
Formal, 9 - 12, 6 - 8
Standards: 
ESS2.C, ESS2.D
Keywords: 
OLYMPEX, ground validation, rain gauge, radar, airborne instruments
Summary: 
You will learn how we measure precipitation from the ground and from space using satellites, and why we need to do ground validation of the satellite data. You will also learn about the OLYMPEX Field Campaign.

First Data from GPM

http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11784
Primary Topic: 
Technology
Subtopics: 
Precipitation, Weather and Climate, Weather, Tropical Cyclones, Satellites, Data
Type: 
Video
Audience: 
Outreach, Informal, 9 - 12, 6 - 8, General
Standards: 
ESS2.D, ESS3.D, ETS2.A
Keywords: 
GPM Core Observatory, JAXA, GMI, DPR
Summary: 
NASA and JAXA released the first images captured by their newest Earth-observing satellite, the Global Precipitation Measurement (GPM) Core Observatory, which launched into space Feb. 27, 2014.