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About JPSS Satellites
There are three satellites and one experimental payload in the JPSS program

Suomi NPPSuomi National Polar-orbiting Partnership
JPSS-1Joint Polar Satellite System -1
JPSS-2Joint Polar Satellite System -2
TCTETSI Calibration Transfer Experiment

Suomi NPP Satellite
Suomi NPP

The NPOESS Preparatory Project (NPP) was renamed to Suomi National Polar-orbiting Partnership (Suomi NPP) in honor of Verner E. Suomi, University of Wisconsin meteorologist, widely recognized as the "Father of Satellite Meteorology."

Suomi NPP is the first next generation polar-orbiting satellite in the JPSS series, and is considered the bridge between NOAA's legacy polar satellite fleet, NASA's Earth observing missions and JPSS constellation. Launched in October 2011, Suomi NPP boasts five state-of-the-art instruments: (1) VIIRS, (2) CrIS, (3) ATMS, (4) OMPS, and (5) CERES FM5— which will be the similar instruments carried on JPSS-1. It has design life of five years and was launched with a Delta-II Mission Launch Vehicle from Vandenberg Air Force Base, California.

JPSS-1Satellite

JPSS-1 is the second spacecraft within NOAA's next generation of polar-orbiting satellites. It is scheduled to launch in early 2017. Capitalizing on the success of Suomi NPP, the JPSS-1 spacecraft boasts five similar instruments: (1) VIIRS, (2) CrIS, (3) ATMS, (4) OMPS-N, and (5) CERES-FM6. Instruments can also be called sensors or payloads. JPSS-1 will take advantage of the successful technologies developed through the Suomi NPP satellite. JPSS-1's design life is seven years, and it is scheduled to launch aboard a Delta-II Mission Launch Vehicle.

JPSS-2 will provide operational continuity of satellite-based observations and products for NOAA Polar-Orbiting Environmental Satellites (POES) and Suomi NPP satellite and ground systems. The baseline plan for JPSS Ground System will be sustained to support JPSS-2, similar to JPSS-1. The JPSS-2 spacecraft will host the following instruments: (1) VIIRS, (2) CrIS, (3) ATMS, and (4) OMPS.

The Total Solar Irradiance (TSI) Calibration Transfer Experiment (TCTE) is the experimental payload under the JPSS system. It is an instrument that measures the sun's energy output and was hosted aboard a U.S. Air Force Space Test Program Satellite-3 (STPSat-3) and launched on November 19, 2013 from NASA Wallops Flight Facility, Wallops Island, Va. JPSS was able to take advantage of this ride-share opportunity to provide a low-cost means of maintaining the continuity of TSI observations.