New results: the 2020–2022 drought led to ~3 km³/yr water loss around Lake Mead, incl. groundwater depletion. Remote sensing data show up to 8 mm/yr uplift as the crust rebounds. Drought impacts reach far below the surface. doi.org/10.1016/j.ej... #Drought #Groundwater #InSAR #WaterManagement

We wish you well, fellow Sentinel! With a gentle push, #Ariane6 has released the Copernicus Sentinel-1D satellite to orbit where it will begin its amazing life of scientific discoveries. Keep in touch! 📡🛰️

Imagine your city slowly sinking. In India’s megacities, 80M+ people face this reality. New satellite radar research by @nitheshnirmal.bsky.social reveals where the ground is shifting most unevenly. 🌍🏠 #LandSubsidence www.nature.com/articles/s41... @shirzaei.bsky.social @vtgeosciences.bsky.social

Please join me to welcome Ola to the HIRS & EOI labs. He started his PhD studies this semester at the Dept. of Geosciences at Virginia Tech and will be investigating groundwater-induced land subsidence in Virginia's near-coastal areas #InSAR #science @shirzaei.bsky.social @vtgeosciences.bsky.social

Welcome Sushrita to the HIRS lab, where she started his PhD studies this semester at the Dept. of Geosciences at Virginia Tech. Her focus will be terrestrial water storage changes in cold regions. #GRACE #DynamicPlanet #science @vtgeosciences.bsky.social

I’m thrilled to share the launch episode of PEAS Talk — where we spill the science on #Planetary, #Earth, and #Atmospheric #Sciences. You can listen on any of your favorite platforms #PEASTalkMoment #SciencePodcast #SciComm #PlanetaryScience #EarthScience #AtmosphericScience

On September 12th, I successfully passed my preliminary exams and officially advanced to #PhD candidacy. As part of the process, I proposed my dissertation: "Integration of Remote Sensing Data and #Models for Prediction of #Groundwater Response to Anthropogenic #Drought".

Not just warming but also changes in precipitation may contribute to glacial melting in the Himalayas. See more at attheu.utah.edu/facultystaff... @utah.edu #GraceFO

High Mountain Asia’s shrinking glaciers linked to monsoon changes - @theU

Shifting precipitation patterns, driven by climate change, could reshape water security and environmental hazards for one of world’s most populated regions, research shows.

attheu.utah.edu

Congratulations to VT alumni & U. of Utah Prof. Sonam Sherpa on this important work, published last week in IEEE JSTARS, on the influence of changes in precipitation dynamics in the Himalayas on glacier melting. Read the publication at ieeexplore.ieee.org/abstract/doc... @vtgeosciences.bsky.social

**** Media Coverage **** I had the opportunity of being on national TV, @cbsnews.com , yesterday discussing our recent publication on the #US #sinking #cities. Pub: www.nature.com/articles/s44... CBS news piece: youtu.be/hXznyppIwz0

A new Nature Cities study led by Leonard Ohenhen, PhD, reveals how groundwater extraction contributes to land subsidence in several major U.S. cities. At HIRS Lab, we were proud to support this research with our expertise in groundwater analysis. www.nature.com/articles/s44...

Land subsidence risk to infrastructure in US metropolises - Nature Cities

Ohenhen et al. used space geodetic measurements to rigorously quantify land subsidence in the 28 most populous US cities. They find that over 20% of the area in each city is sinking, affecting approxi...

nature.com

Congratulations, Nitheshnirmal Sadhadivam, for being awarded the William A. Fischer Scholarship of the American Society of Photogrammetry and Remote Sensing (ASPRS) Foundation! @shirzaei.bsky.social

Thanks for an excellent session at #AGU2024 about innovative technologies for satellite gravimetry, led by KGF, AP and others.

*** AGU24-Day1 *** Welcome all to #AGU24 of @theAGU! Members of @EOI_lab and @HIRSlab of @vtgeosciences and friends kick off meeting with 6 exciting presentations on some of the most pressing issues of our time. Please consider attending them.

We are looking for a PhD students to join the HIRS lab at Virginia Tech! Are you excited about improving monitoring of (ground) water resources with innovative remote sensing technologies in extreme environments? If yes, consider applying ! @shirzaei.bsky.social sites.google.com/vt.edu/hirs/...

I was interviewed on this study by NASA's press office and provided some comments. The study is very thorough and interesting, recommend reading. Global decline of TWS happens even since many decades (see Fig. 5 of the study), in addition to the abrupt decline of ~2015.

NASA Satellites Reveal Abrupt Drop in Global Freshwater Levels - NASA Science

Earth’s total amount of freshwater dropped abruptly starting in May 2014 and has remained low ever since.

science.nasa.gov