Launched in 1992, TOPEX/Poseidon was a joint venture between CNES and NASA that measured ocean surface topography to an accuracy of 4.2 cm, enabled scientists to forecast the 1997-1998 El Niño, and improved understanding of ocean circulation and its effect of global climate.
What is the Topex Poseidon project?
An Earth satellite designed to measure ocean surface topography with unprecedented accuracy, Topex/Poseidon spent 13-plus years in orbit improving understanding of ocean circulation and its impact on global climate. Topex/Poseidon was a joint project between NASA and France’s National Center for Space Studies, or CNES.
What 1997 event did Topex help predict that at that time was the largest in the past 100 years?
Launched in 1992 to make precise measurements of the ocean surface, Topex/Poseidon was watching in 1997 when the largest El Niño in 100 years changed weather patterns around the world.
How does Topex Poseidon satellite collect data?
The TOPEX/POSEIDON altimeter bounces radar pulses off the sea surface and measures the time it takes the signals to return to the satellite. A microwave radiometer will correct for any errors in the time delay that is caused by water vapor in the path through the atmosphere.
WHO launched Jason 3?
Launch: The Jason-3 spacecraft was launched on January 17, 2016 (18:42.18 UTC) on a SpaceX Falcon 9 v1. 1 vehicle from VAFB, CA.
Did Topex Poseidon helped meteorologists track El Niño?
Monitored effects of currents on global climate change and produced the first global views of seasonal changes of currents. Monitored large-scale ocean features like Rossby and Kelvin waves and studied such phenomena as El Niño, La Niña, and the Pacific Decadal Oscillation.
What are the two equipped altimeters in the Topex Poseidon?
Simultaneously, the dedicated altimeter satellite TOPEX/Poseidon has been providing the most precise information to date and carries two altimeters: a French solid-state altimeter and a US dual-frequency altimeter, charting the time at a ratio of 1:9.
Is Jason-3 still in orbit?
Yes, Jason-3 continues a transatlantic partnership in space-based altimetry dating back to 1992, when NASA and CNES teamed up to launch the TOPEX/Poseidon mission. NASA and CNES continued this measurement with the launch of Jason-1 in 2001.
How accurate is the Jason satellite?
The primary instrument on Jason-3 is a radar altimeter. The altimeter measures sea-level variations over the global ocean with very high accuracy (1.3 inches or 3.3 centimeters, with a goal of achieving 1 inch or 2.5 centimeters).
What is the primary job of the Jason-3 satellite?
Jason-3 is a satellite mission that supports scientific, commercial and practical applications related to sea level rise, ocean circulation, and climate change. Jason-3 follows the current operational altimeter satellite, Jason-2, in maintaining satellite altimetry observations of global sea surface height.
What was the purpose of Jason-1?
Jason-1 was a satellite altimeter oceanography mission. It sought to monitor global ocean circulation, study the ties between the ocean and the atmosphere, improve global climate forecasts and predictions, and monitor events such as El Niño and ocean eddies.
How long did the TOPEX mission last?
Although originally planned for a three- to five-year mission, Topex/Poseidon continues to operate nine years after its launch. Among other science findings, Topex/Poseidon provided a unique view of the El Niño phenomenon of the late 1990s, an unusual water warming in the eastern Pacific Ocean.
How does TOPEX measure sea level?
From its orbit 1,336 kilometers (830 miles) above Earth’s surface, Topex/Poseidon measures sea level every 10 days using the altimeter instruments developed by NASA and CNES. Using this information, scientists can relate changes in ocean currents to atmospheric and climate patterns.
What happened to the TOPEX/Poseidon satellite?
After over 62,000 orbits, the satellite has ceased operations. TOPEX/Poseidon remains in orbit 830 miles above the Earth, posing no threat to the planet. The mission’s most important achievement was to determine the patterns of ocean circulation – how heat stored in the ocean moves from one place to another.
What does TOPEX/Poseidon study?
Monitored large-scale ocean features like Rossby and Kelvin waves and studied such phenomena as El Niño, La Niña, and the Pacific Decadal Oscillation TOPEX/Poseidon Begins its 14th Year! – This tenacious craft has reached the 10th anniversary of the end of its primary mission!
