Dr. Eric J. Fielding, PhD

@EricFielding
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Geophysicist at lab in Pasadena, California. Statements and opinions posted by me are my own and not those of my employer. he/him. Header image is interferometric synthetic aperture radar (InSAR) map of surface displacements caused by the 2015 magnitude 7.8 Gorkha earthquake in Nepal.
Pronounshe/him
Researchhttps://orcid.org/0000-0002-6648-8067
Work websitehttps://science.jpl.nasa.gov/people/fielding/
Dr. Eric J. Fielding, PhDOct 17
The Vantor company (formerly Maxar) used one of their Worldview satellites to capture a picture of the NASA-ISRO SAR (NISAR) satellite in orbit. The large radar reflector (12 meters or 38 feet wide) has a mesh surface that appears gold and the solar panels on the main satellite built by ISRO appear red.
Dr. Eric J. Fielding, PhDJul 18, 2025

NASA will stream a news briefing on Monday, July 21, at 12 noon EDT with a preview of the NASA-ISRO SAR (NISAR) mission.

The Earth-observing satellite, a collaboration between NASA and ISRO (Indian Space Research Organisation), carries an advanced radar system that will view Earth in unprecedented detail and detect the movement of land and ice surfaces down to the centimeter.

Launch is targeted for no earlier than late July.

#NASA #ISRO #SAR #satellite #NASAJPL

https://www.jpl.nasa.gov/news/nasa-to-preview-advanced-us-india-radar-mission-ahead-of-launch/

Show threadDr. Eric J. Fielding, PhDJul 5, 2025
The bad air has moved inland since last night and the air quality in Pasadena is worse this morning. New map at 10 AM PDT July 5, 2025 from PurpleAir.
Dr. Eric J. Fielding, PhDJul 5, 2025
There is little breeze in the LA area, except near the coast, so most of the LA basin has horrible air quality at 11 PM on the Fourth of July due to all the fireworks, as usual. Pasadena and adjacent cities decided to use drone light shows instead of fireworks, and we have some hills between us and the rest of the basin, so the air here is better . Map from the PurpleAir website at 11 PM PDT. Pasadena also has strict bans on amateur fireworks, so it was quiet here all evening.
Dr. Eric J. Fielding, PhDJul 3, 2025
NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) telescope in Chile first detected interstellar comet on July 1, 2025 that has now been named 3I/ATLAS. The object was then found in images from other telescopes going back to June 14 that confirm it is coming from outside the Solar System and passing through at a high velocity.
https://science.nasa.gov/blogs/planetary-defense/2025/07/02/nasa-discovers-interstellar-comet-moving-through-solar-system/
Dr. Eric J. Fielding, PhDMay 30, 2025

Multiple fires in central and northern Saskatchewan. #fires #saskatchewan #canada

https://gisappl.saskatchewan.ca/Html5Ext/?viewer=wfmpublic

Show threadDr. Eric J. Fielding, PhDMay 21, 2025
Here is a photo of one of the NISAR banners now flying around JPL, a sign that the launch is approaching. #NISAR #NASA #ISRO #SAR
Dr. Eric J. Fielding, PhDApr 1, 2025
NASA JPL ARIA project analysis of data from Copernicus Sentinel-2 optical and Sentinel-1 radar images measured the slip on the Sagaing Fault in Myanmar. Quick preliminary map. More details later. Fault ruptured about 500 km (300 miles) in the magnitude 7.7 earthquake on 28 March 2025. Red is northward movement and blue is southward movement. This is pixel offset tracking or optical image correlation measurements of horizontal displacements.
Dr. Eric J. Fielding, PhDMar 16, 2025
NASA-ISRO Mission Will Map Farmland From Planting to Harvest. The NASA-ISRO SAR (synthetic aperture radar) satellite will be launched soon and acquire radar over the entire land area of the Earth (except a few places near the poles). One objective is mapping agriculture. #NASA #ISRO #radar #satellite #SAR #agriculture
Image from Copernicus Sentinel-1 SAR. Credit: ESA; processing and visualization by Earth Big Data LLC. See alt text for more info.
https://www.jpl.nasa.gov/news/nasa-isro-mission-will-map-farmland-from-planting-to-harvest/
NASA-ISRO Mission Will Map Farmland From Planting to Harvest

Data from the NISAR satellite will be used to map crop growth, track plant health, and monitor soil moisture — offering detailed, timely information for decision making.

NASA Jet Propulsion Laboratory (JPL)
Dr. Eric J. Fielding, PhDMar 14, 2025
Firefly Aerospace photo of Lunar Eclipse taken by their Blue Ghost 1 lander on the Moon.
"Firefly’s Blue Ghost lunar lander captured the diamond ring effect during a total solar eclipse captured around 3:30 am CST on March 14 from the Moon’s Mare Crisium. Credit: Firefly Aerospace"