EucFACE is looking for a new technical engineer! Please share with skilled engineers interested in working at our flagship forest free-air CO2 enrichment experiment in Western Sydney @westsyduhie.bsky.social jobs.smartrecruiters.com/WesternSydne...
Joshua B. Fisher
@jbfisher.bsky.social
Associate Professor of Environmental Science & Policy at Chapman University Science Lead at Hydrosat, Inc. Former ECOSTRESS Science Lead at NASA JPL Opinions mine
Our group @ecologicalsociety.bsky.social #ESA2026: LB11-129-Diurnal hysteresis of GPP in a tropical forest PS26-105-C and N cycling in tropical forests w/ elevated CO2 COS179-04-LiDAR vegetation structure in tropical forests w/ elevated CO2 LB20-201-A preliminary inventory of ET for Portugal
Evapotranspiration Everywhere, All the Time: Towards a Unified View From Earth Observation onlinelibrary.wiley.com/doi/10.1111/... @youngryel.bsky.social
Evapotranspiration Everywhere, All the Time: Towards a Unified View From Earth Observation
This paper discusses the evolution and revolution of Earth observation for evapotranspiration (ET), as we advanced from the first Landsat satellite and development of ET models through the progressio...
onlinelibrary.wiley.com
Our work made the front page of the OC Register Sunday paper. (I might add that my student, Ashley, and our work were above Sabrina Carpenter and Coachella...) www.ocregister.com/2026/04/12/p...
Climate change has increased global evaporative demand, except in S. Asia... Find out why/how inside! www.nature.com/articles/s43...
Climate change has increased global evaporative demand except in South Asia - Communications Earth & Environment
Irrigation in South Asia has increased soil and air moisture, leading to more cloud cover and reduced solar radiation, which has regionally counteracted the global rise in evaporative demand, accordin...
doi.org
I was named to the 2025 world’s “most influential” (top 1% by citations) scientists list (Clarivate Highly Cited Researchers 2025)!
Evapotranspiration data from OpenET were used in a US Supreme Court agreement between New Mexico, Texas, and Colorado over shared/disputed water. This is the first time that satellite remote sensing has been used in the US Supreme Court. nmdoj.gov/wp-content/u...
nmdoj.gov
news.chapman.edu/2025/09/23/c...
Chapman University Rises Nearly 10% in U.S. News & World Report Rankings
Chapman University has once again advanced in the annual U.S. News & World Report rankings of America’s Best Colleges, climbing 11 spots nationally. The new ranking continues Chapman’s upward trajecto...
news.chapman.edu
Featured on the cover of @globalchangebio.bsky.social is a thermal image of Elaeocarpus Grandis taken at @jcuofficial.bsky.social Daintree Rainforest Observatory. In this species we find that populations originating from warmer climates have narrower leaves with higher rates of water loss.
New PhD position in Plant Ecophysiology🌳 Study how atmospheric & soil drought shape tree carbon & water relations at the VPDrought experiment in Switzerland. Start Jan 2026. Apply here: m.refline.ch/273855/1759/... @wslresearch.bsky.social
The Gifford Fire is the largest fire thus far this year in California. Captured by ECOSTRESS. Data visualized by high-school student Krishiv Jaini
Phoenix just hit the hottest Aug day in recorded history. ECOSTRESS saw it a couple days before with temps of 124F/51C at 9.20AM. Data visualized by high-school student Kaitlin Cho.
Happening now! Largest fire in France in nearly a hundred years. Captured by ECOSTRESS. Data visualized by high school student Bill Chen.
Compilation of fires burning in Portugal as captured by ECOSTRESS. This image was a collaboration from multiple high school students piecing together the individual fires. Bill Chen Kaitlin Cho Krishiv Jaini Taara Reddy Ray Schaffer Lucas Zaninovich
Sending ❤️ to Portugal, half of which is on fire right now. This fire, outside of Serabigões, captured by ECOSTRESS a few days ago.
Interesting volcanic activity happening at Hawai’i, captured by ECOSTRESS. Volcanic activity here seems to have accelerated anomalously since Dec. Image captured by 16-year-old Shreyas Chatterjee working with me this summer.
Progression of Evaporative Stress from ECOSTRESS leading up to the Palisades fire in LA earlier this year. Things start off generally alright, then those winds smacked into LA and fast-dried the veg, which fueled the uncontrollable fires.
One of my students, Bill Chen, was looking at the Airport Fire in SoCal from last year using ECOSTRESS. Interesting to see the topographic variability in the temperatures.
Hydrosat picked up this scorching heatwave sweeping Europe yesterday. Surface temperatures exceeding 67C/150F! It’s great that we can now capture these temps at high resolution globally and with increasing frequency towards daily as we continue to get our constellation online. Stay safe out there!
Another new paper published today using ECOSTRESS again to predict wildfire—this time burn severity—one week before occurrence across New Mexico. This paper also outlines a framework for using machine learning with these data and applications. www.nature.com/articles/s41... @drwkid.bsky.social
Assessment of spatial autocorrelation and scalability in fine-scale wildfire random forest prediction models - Scientific Reports
Scientific Reports - Assessment of spatial autocorrelation and scalability in fine-scale wildfire random forest prediction models
nature.com
New paper using ECOSTRESS and machine learning that predicted Australia’s black summer fires a week ahead of occurrence, mostly using high resolution water use efficiency and evaporative stress data. zslpublications.onlinelibrary.wiley.com/doi/full/10....
Hydrosat poised to launch second thermal-infrared satellite SAN FRANCISCO -- Hydrosat announced plans June 5 to gather thermal-infrared imagery with a second satellite launching later this month on the SpaceX Transporter-14 rideshare. VanZyl-2 has four times the imaging capacity of VanZyl-1,…
Hydrosat poised to launch second thermal-infrared satellite
SAN FRANCISCO -- Hydrosat announced plans June 5 to gather thermal-infrared imagery with a second satellite launching later this month on the SpaceX Transporter-14 rideshare. VanZyl-2 has four times the imaging capacity of VanZyl-1, Hydrosat's first spacecraft launched in August. VanZyl-1 observes 2 million square kilometers daily. “On our VanZyl-2 satellite we are able to image 8 million square kilometers per day,” Pieter Fossel, CEO of Washington-based Hydrosat, told…
spacenews.com
Inspired by @jtuttlekeane.bsky.social and @ohdearz.bsky.social, here's what the White House proposed budget cuts to NASA would do to the entirety of the agency's Science Mission Directorate. Bloodbath is right.
"The Great Wave" of carbon dioxide (CO₂) #ClimateChange #ScienceArt Graphic produced by robbieandrew.github.io
My student, Holland Hatch, graduated today, won the top award for our major, and was selected to give the commencement speech. She’s traveled with me to Costa Rica & New Mexico serving key leadership roles. In short, she’s been amazing. I will miss her and wish her the best. youtu.be/ErEM0vdYk-4
Holland Hatch graduation commencement speech at Chapman University 2025
YouTube video by Josh Fisher
youtu.be
Currently in Costa Rica with a NASA team flying drones over my elevated CO2 sites. NASA/Milan Loiacono
