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Getting the Big Picture: Remote Sensing

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A brief animated look at the different types of remote sensing techniques that NASA uses to study the Earth. This video discusses why we need remote sensing to study the Earth, and the differences between active and passive remote sensing from satellites. It also gives examples of different types of data NASA satellites collect about the Earth, and some of the applications of that data.

This video is public domain and can be downloaded in high resolution here.

 

Researchers Gear Up for OLYMPEX

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The Olympic Mountain Experiment, or OLYMPEX, is a NASA-led field campaign, which will take place on the Olympic Peninsula of Washington State from November 2015 through February 2016. The goal of the campaign is to collect detailed atmospheric measurements that will be used to evaluate how well rain-observing satellites measure rainfall and snowfall from space.

Yemen Hit by 2nd Tropical Cyclone in a Week

Yemen Hit by 2nd Tropical Cyclone in a Week
One week ago to the day Cyclone Chapala, the first Category 1 cyclone to strike Yemen in recorded history made landfall on the south-central coast of Yemen, bringing over a year's worth of rain and flooding to that part of the arid country. Today, yet another tropical cyclone, Megh, made landfall in Yemen. Megh, however, made landfall just to the northeast of the coastal city of Aden, which is further west than where Chapala made landfall, and only as a tropical storm. There are, however, several similarities between the two storms. Megh formed in almost the exact same spot in the central

GPM Sees Another Tropical Cyclone Forming

GPM Sees Another Tropical Cyclone Forming
Another tropical cyclone was caught forming by the GPM core Observatory satellite on November 4, 2015 at 1255 UTC. Deadly tropical cyclone Chapala had just dissipated over Yemen when tropical cyclone 05A started forming in the warm waters of the Arabian Sea west of India. GPM measured the rainfall within the forming tropical cyclone using the satellite's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments. GMI and DPR found that 05A had scattered light to moderate rainfall falling at a maximum rate of only 23.3 mm (.92 inches) per hour. The Joint Typhoon Warning

Cyclone Chapala Brings Heavy Rains, Flooding to Yemen

Cyclone Chapala Brings Heavy Rains, Flooding to Yemen
Cyclone Chapala, which formed into a rare but powerful Category 4 cyclone in the Arabian Sea with winds at one time estimated at 155 mph by the Joint Typhoon Warning Center (JTWC) back on the 30th of October, made its initial landfall along the south coast of Yemen this morning west of the port city of Mukulla at around 09:00 UTC as a Category 1 cyclone with maximum sustained winds estimated at 75 mph by JTWC, making it the first Category 1 cyclone on record to strike Yemen. The last cyclone to strike the Arabian peninsula was Cyclone Phet, which hit eastern Oman back in 2010. In addition to
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