Ryoko Araki
@rarakihydro.bsky.social
Hydrologist, PhD candidate at the San Diego State University & UC Santa Barbara. Kyoto University alumni. Soil moisture 🌱 https://rarakihydro.com/
Science Magazine's podcast has become my new good company while cooking dinner‼️🍳 highly recommend and is on Spotify
November 25, 2025 at 6:06 AM
Science Magazine's podcast has become my new good company while cooking dinner‼️🍳 highly recommend and is on Spotify
Reposted by Ryoko Araki
Refinding joy in exploring streamflow data 😍 just looking at the stories gages tell about rivers.
Here’s the Allagash River (ME), 1980–2020. Each line: a year of daily flow (Jan–Dec). Colors show each day compared to normal: green ≈ normal, blue = high, red = low. 🌊💧
#Hydrology #DataViz #sciArt
Here’s the Allagash River (ME), 1980–2020. Each line: a year of daily flow (Jan–Dec). Colors show each day compared to normal: green ≈ normal, blue = high, red = low. 🌊💧
#Hydrology #DataViz #sciArt
November 12, 2025 at 6:54 PM
Refinding joy in exploring streamflow data 😍 just looking at the stories gages tell about rivers.
Here’s the Allagash River (ME), 1980–2020. Each line: a year of daily flow (Jan–Dec). Colors show each day compared to normal: green ≈ normal, blue = high, red = low. 🌊💧
#Hydrology #DataViz #sciArt
Here’s the Allagash River (ME), 1980–2020. Each line: a year of daily flow (Jan–Dec). Colors show each day compared to normal: green ≈ normal, blue = high, red = low. 🌊💧
#Hydrology #DataViz #sciArt
Reposted by Ryoko Araki
I’m still figuring out bluesky… but with the goal of more easily finding information I’m interested in, I started a feed and associated starter pack for Hydrological Processes as well as Hydrological Extremes. Please let me know if you want to be added to the starter pack! bsky.app/profile/did:...
November 11, 2025 at 6:15 PM
I’m still figuring out bluesky… but with the goal of more easily finding information I’m interested in, I started a feed and associated starter pack for Hydrological Processes as well as Hydrological Extremes. Please let me know if you want to be added to the starter pack! bsky.app/profile/did:...
EGU26 abstract submission is open! We invite you to submit your work to our large-sample hydrology session HS2.4.2 💻💧🌊
meetingorganizer.copernicus.org/EGU26/sessio...
meetingorganizer.copernicus.org/EGU26/sessio...
October 22, 2025 at 10:52 PM
EGU26 abstract submission is open! We invite you to submit your work to our large-sample hydrology session HS2.4.2 💻💧🌊
meetingorganizer.copernicus.org/EGU26/sessio...
meetingorganizer.copernicus.org/EGU26/sessio...
I had lost my camera which was very important to me. A Good Samaritan picked it up, left a note between my car's windshield, we communicated via phone, and today we met and I received the camera back to me. Thank you so much Philips 🇺🇸
September 20, 2025 at 5:17 PM
I had lost my camera which was very important to me. A Good Samaritan picked it up, left a note between my car's windshield, we communicated via phone, and today we met and I received the camera back to me. Thank you so much Philips 🇺🇸
Reposted by Ryoko Araki
🚨Session proposals are now open for the JpGU-AGU Joint Meeting, taking place 24-29 May 2026 in Chiba, Japan!
⛰️This hybrid conference will bring together researchers from around the world for groundbreaking discussions in the Earth and space sciences.
💻Submit a proposal by 15 Oct➡️ buff.ly/TemHVUx
⛰️This hybrid conference will bring together researchers from around the world for groundbreaking discussions in the Earth and space sciences.
💻Submit a proposal by 15 Oct➡️ buff.ly/TemHVUx
September 18, 2025 at 8:41 PM
🚨Session proposals are now open for the JpGU-AGU Joint Meeting, taking place 24-29 May 2026 in Chiba, Japan!
⛰️This hybrid conference will bring together researchers from around the world for groundbreaking discussions in the Earth and space sciences.
💻Submit a proposal by 15 Oct➡️ buff.ly/TemHVUx
⛰️This hybrid conference will bring together researchers from around the world for groundbreaking discussions in the Earth and space sciences.
💻Submit a proposal by 15 Oct➡️ buff.ly/TemHVUx
Google #AlphaEarth is demonstrating that Japan has similar landscapes to Southern China, EU Alps & Carpathian mountain ranges, and US Pacific Northwest 👀
Article
medium.com/google-earth...
App
earthengine-ai.projects.earthengine.app/view/embeddi...
Article
medium.com/google-earth...
App
earthengine-ai.projects.earthengine.app/view/embeddi...
August 2, 2025 at 4:37 AM
Google #AlphaEarth is demonstrating that Japan has similar landscapes to Southern China, EU Alps & Carpathian mountain ranges, and US Pacific Northwest 👀
Article
medium.com/google-earth...
App
earthengine-ai.projects.earthengine.app/view/embeddi...
Article
medium.com/google-earth...
App
earthengine-ai.projects.earthengine.app/view/embeddi...
Reposted by Ryoko Araki
Hydrology Paper of the Day @rarakihydro.bsky.social on global patterns of water utilization by vegetation: soil, precipitation, and plant processes; leaf area, dry conditions and landscapes; ecological processes and differences between woodlands, savannas and grasslands; and identifying thresholds.
Co-authored paper is now available at Nature Ecology & Evolution! We applied the nonlinear soil moisture loss model, which we published last month in GRL (Araki et al., 2025), to in-situ field sensor data to reveal emergent patterns of water competition.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Ecological and hydroclimatic determinants of vegetation water-use strategies - Nature Ecology & Evolution
Vegetation responses to water limitation are difficult to predict due to large variation across space and time. A new analysis of global soil moisture dynamics reveals that water-use strategies vary s...
www.nature.com
July 30, 2025 at 3:03 AM
Hydrology Paper of the Day @rarakihydro.bsky.social on global patterns of water utilization by vegetation: soil, precipitation, and plant processes; leaf area, dry conditions and landscapes; ecological processes and differences between woodlands, savannas and grasslands; and identifying thresholds.
A new article drop on deepgroundwater explores the impacts of AI on water resources
deepgroundwater.com/blog/doing-a...
deepgroundwater.com/blog/doing-a...
Doing AI Hydrology to assess water resources for AI expansion... to continue doing AI Hydrology - Deep Groundwater
A collection of open-source blog posts and articles
deepgroundwater.com
July 31, 2025 at 11:40 PM
A new article drop on deepgroundwater explores the impacts of AI on water resources
deepgroundwater.com/blog/doing-a...
deepgroundwater.com/blog/doing-a...
Co-authored paper is now available at Nature Ecology & Evolution! We applied the nonlinear soil moisture loss model, which we published last month in GRL (Araki et al., 2025), to in-situ field sensor data to reveal emergent patterns of water competition.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Ecological and hydroclimatic determinants of vegetation water-use strategies - Nature Ecology & Evolution
Vegetation responses to water limitation are difficult to predict due to large variation across space and time. A new analysis of global soil moisture dynamics reveals that water-use strategies vary s...
www.nature.com
July 29, 2025 at 7:38 PM
Co-authored paper is now available at Nature Ecology & Evolution! We applied the nonlinear soil moisture loss model, which we published last month in GRL (Araki et al., 2025), to in-situ field sensor data to reveal emergent patterns of water competition.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Ryoko Araki
Only a few days left until the abstract submission deadline for the Classical Runoff Generation Session!
📅 Submit your abstract now!
link: agu.confex.com/agu/agu25/pr... @rarakihydro.bsky.social @nitinsingh.bsky.social @lytarasova.bsky.social @mcmillanhydro.bsky.social @kevinmcguire.bsky.social
📅 Submit your abstract now!
link: agu.confex.com/agu/agu25/pr... @rarakihydro.bsky.social @nitinsingh.bsky.social @lytarasova.bsky.social @mcmillanhydro.bsky.social @kevinmcguire.bsky.social
July 24, 2025 at 12:46 PM
Only a few days left until the abstract submission deadline for the Classical Runoff Generation Session!
📅 Submit your abstract now!
link: agu.confex.com/agu/agu25/pr... @rarakihydro.bsky.social @nitinsingh.bsky.social @lytarasova.bsky.social @mcmillanhydro.bsky.social @kevinmcguire.bsky.social
📅 Submit your abstract now!
link: agu.confex.com/agu/agu25/pr... @rarakihydro.bsky.social @nitinsingh.bsky.social @lytarasova.bsky.social @mcmillanhydro.bsky.social @kevinmcguire.bsky.social
Reposted by Ryoko Araki
Thank you so much @mcmillanhydro.bsky.social @lytarasova.bsky.social for contributing to our session
July 2, 2025 at 5:18 AM
Thank you so much @mcmillanhydro.bsky.social @lytarasova.bsky.social for contributing to our session
Reposted by Ryoko Araki
The classical runoff generation session is also at #AGU25 a highlight for catchment hydrologists attending the @agu.org conference in December. If you would like to contribute, make sure to submit your abstract by the end of July! Great lineup of invited speakers!
Submit your #AGU25 abstract to the long-running runoff-generation session! It is our great pleasure to have two invited speakers: Hilary McMillan and Larisa Tarasova. lnkd.in/gCy-iBXJ
@nitinsingh.bsky.social @aliva-nanda.bsky.social @kjmcguire.bsky.social
@nitinsingh.bsky.social @aliva-nanda.bsky.social @kjmcguire.bsky.social
July 2, 2025 at 2:53 AM
Submit your #AGU25 abstract to the long-running runoff-generation session! It is our great pleasure to have two invited speakers: Hilary McMillan and Larisa Tarasova. lnkd.in/gCy-iBXJ
@nitinsingh.bsky.social @aliva-nanda.bsky.social @kjmcguire.bsky.social
@nitinsingh.bsky.social @aliva-nanda.bsky.social @kjmcguire.bsky.social
July 2, 2025 at 12:40 AM
Submit your #AGU25 abstract to the long-running runoff-generation session! It is our great pleasure to have two invited speakers: Hilary McMillan and Larisa Tarasova. lnkd.in/gCy-iBXJ
@nitinsingh.bsky.social @aliva-nanda.bsky.social @kjmcguire.bsky.social
@nitinsingh.bsky.social @aliva-nanda.bsky.social @kjmcguire.bsky.social
Reposted by Ryoko Araki
Hydrology Paper of the Day @rarakihydro.bsky.social on a model of soil moisture loss that utilizes a nonlinear function: model fitting to SMAP remote sensing data; an examination of global-scale patterns; how aridity, sand fraction and landcover affects outputs; and the role of evapotranspiration.
My 2nd PhD chapter is out! Soil drying speeds encode the signature of evapotranspiration. Using SMAP data, we demonstrated that, introducing nonlinearity in a traditional soil model help capture aggressive vs conservative vegetation water consumption.
doi.org/10.1029/2024...
doi.org/10.1029/2024...
June 7, 2025 at 5:45 AM
Hydrology Paper of the Day @rarakihydro.bsky.social on a model of soil moisture loss that utilizes a nonlinear function: model fitting to SMAP remote sensing data; an examination of global-scale patterns; how aridity, sand fraction and landcover affects outputs; and the role of evapotranspiration.
Reposted by Ryoko Araki
Ryoko’s favorite paper: onlinelibrary.wiley.com/doi/10.1002/...
Consistency between hydrological models and field observations: linking processes at the hillslope scale to hydrological responses at the watershed scale
The purpose of this paper is to identify simple connections between observations of hydrological processes at the hillslope scale and observations of the response of watersheds following rainfall, wi....
onlinelibrary.wiley.com
June 9, 2025 at 5:34 PM
Ryoko’s favorite paper: onlinelibrary.wiley.com/doi/10.1002/...
Reposted by Ryoko Araki
🌊 Continuing our #AGU Catchment Hydrology TC Early Career Competition 2024 series with @rarakihydro.bsky.social!
Thank you for sharing your favorite #hydrology paper with us! 📖💧
We’ll spotlight #EarlyCareer voices twice a month—stay tuned for more insights from the #HydrologyCommunity! 🔍
Thank you for sharing your favorite #hydrology paper with us! 📖💧
We’ll spotlight #EarlyCareer voices twice a month—stay tuned for more insights from the #HydrologyCommunity! 🔍
June 9, 2025 at 5:34 PM
🌊 Continuing our #AGU Catchment Hydrology TC Early Career Competition 2024 series with @rarakihydro.bsky.social!
Thank you for sharing your favorite #hydrology paper with us! 📖💧
We’ll spotlight #EarlyCareer voices twice a month—stay tuned for more insights from the #HydrologyCommunity! 🔍
Thank you for sharing your favorite #hydrology paper with us! 📖💧
We’ll spotlight #EarlyCareer voices twice a month—stay tuned for more insights from the #HydrologyCommunity! 🔍
Thank you Dr. Kinar for featuring my paper in the Hydrology Paper of the Day! ☺️
Hydrology Paper of the Day @rarakihydro.bsky.social on a model of soil moisture loss that utilizes a nonlinear function: model fitting to SMAP remote sensing data; an examination of global-scale patterns; how aridity, sand fraction and landcover affects outputs; and the role of evapotranspiration.
My 2nd PhD chapter is out! Soil drying speeds encode the signature of evapotranspiration. Using SMAP data, we demonstrated that, introducing nonlinearity in a traditional soil model help capture aggressive vs conservative vegetation water consumption.
doi.org/10.1029/2024...
doi.org/10.1029/2024...
June 9, 2025 at 3:55 AM
Thank you Dr. Kinar for featuring my paper in the Hydrology Paper of the Day! ☺️
Reposted by Ryoko Araki
Ok this version is moving!
June 3, 2025 at 9:54 PM
Ok this version is moving!
My 2nd PhD chapter is out! Soil drying speeds encode the signature of evapotranspiration. Using SMAP data, we demonstrated that, introducing nonlinearity in a traditional soil model help capture aggressive vs conservative vegetation water consumption.
doi.org/10.1029/2024...
doi.org/10.1029/2024...
June 3, 2025 at 2:44 PM
My 2nd PhD chapter is out! Soil drying speeds encode the signature of evapotranspiration. Using SMAP data, we demonstrated that, introducing nonlinearity in a traditional soil model help capture aggressive vs conservative vegetation water consumption.
doi.org/10.1029/2024...
doi.org/10.1029/2024...
Reposted by Ryoko Araki
Our paper in Proceedings of The National Academy of Sciences-Nexus shows the relative and long-lasting memory impact of #drought and crop production on #groundwater levels @sheilasaia.bsky.social @ruchibhattacharya.bsky.social @hooriajami.bsky.social academic.oup.com/pnasnexus/ar...
Unraveling the causal influences of drought and crop production on groundwater levels across the contiguous United States
Abstract. Groundwater depletion in agricultural-dominated regions is attributed to climate and irrigation withdrawals that support crop production. However
academic.oup.com
May 12, 2025 at 12:46 PM
Our paper in Proceedings of The National Academy of Sciences-Nexus shows the relative and long-lasting memory impact of #drought and crop production on #groundwater levels @sheilasaia.bsky.social @ruchibhattacharya.bsky.social @hooriajami.bsky.social academic.oup.com/pnasnexus/ar...
Reposted by Ryoko Araki
Today we were in the Re della Pietra #catchment
danielepenna.wixsite.com/redellapietra.
We installed a new #weather station and showed the site to some private #stakeholders.
And this little paper came out right today.
rdcu.be/efM8w
Congrats @mcmillanhydro.bsky.social and coauthors!
danielepenna.wixsite.com/redellapietra.
We installed a new #weather station and showed the site to some private #stakeholders.
And this little paper came out right today.
rdcu.be/efM8w
Congrats @mcmillanhydro.bsky.social and coauthors!
March 31, 2025 at 9:13 PM
Today we were in the Re della Pietra #catchment
danielepenna.wixsite.com/redellapietra.
We installed a new #weather station and showed the site to some private #stakeholders.
And this little paper came out right today.
rdcu.be/efM8w
Congrats @mcmillanhydro.bsky.social and coauthors!
danielepenna.wixsite.com/redellapietra.
We installed a new #weather station and showed the site to some private #stakeholders.
And this little paper came out right today.
rdcu.be/efM8w
Congrats @mcmillanhydro.bsky.social and coauthors!
Reposted by Ryoko Araki
New paper! After much work by me and my students we created a global database of hundreds of research watersheds, and perceptual models of their hydrologic processes. We use the data to test classic theories on how climate and landscape control dominant processes. www.nature.com/articles/s44...
Global patterns in observed hydrologic processes - Nature Water
This study presents a global, searchable database of 400 research watersheds with published descriptions of dominant hydrologic flow pathways, supporting efficient hypothesis testing to investigate em...
www.nature.com
April 6, 2025 at 4:24 PM
New paper! After much work by me and my students we created a global database of hundreds of research watersheds, and perceptual models of their hydrologic processes. We use the data to test classic theories on how climate and landscape control dominant processes. www.nature.com/articles/s44...
Reposted by Ryoko Araki
This is our 1st publication of the @cuahsi.bsky.social / USGS Powell Center supported Critical Zone network to synthesize preferential flow research. It's a great team and there will be more research to come. @hooriajami.bsky.social @nitinsingh.bsky.social @rarakihydro.bsky.social and many more!
April 11, 2025 at 7:16 PM
This is our 1st publication of the @cuahsi.bsky.social / USGS Powell Center supported Critical Zone network to synthesize preferential flow research. It's a great team and there will be more research to come. @hooriajami.bsky.social @nitinsingh.bsky.social @rarakihydro.bsky.social and many more!
Check out our new paper! ✨️
New publication: "Identifying preferential flow from soil moisture time series: Review of methodologies" in Vadose Zone Journal.
We synthesized the methods to identify preferential flow of soil water based on soil moisture observations. 🧵
onlinelibrary.wiley.com/doi/abs/10.1...
We synthesized the methods to identify preferential flow of soil water based on soil moisture observations. 🧵
onlinelibrary.wiley.com/doi/abs/10.1...
Identifying preferential flow from soil moisture time series: Review of methodologies
Soil moisture data can be used to identify the occurrence of preferential flow (PF) and its initiating conditions. Various data-analysis methods to identify PF differ in susceptibility to error, bia...
onlinelibrary.wiley.com
April 14, 2025 at 4:10 AM
Check out our new paper! ✨️