CTD rosette plus stellar backdrop
Taken one minute before - early contender for #ctdappreciationday #ironman
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#CTDAppreciationDay
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Pictures of pictures! STEMSEAS students posing in front of the CTD on the R/V Atlantis starboard deck.
STEMSEAS students recovering the CTD over the starboard side of the R/V Atlantis.
Late post for #CTDAppreciationDay 🌊🧪
Our amazing #AT50-37 STEMSEAS students wrangling the CTD on our transit from San Diego, CA to Dutch Harbor, AK.
Joust, hook, + reel 🎣
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Happy #CTDAppreciationDay to all who celebrate (and we do)! Here's how researchers are studying Arctic fjords with crowdsourced science, sailboats, and CTDs. eos.org/articles/stu...
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A device (rosette) being lowered into the sea (greenish waters). It's formed by several Niskin bottles (grey) and a ctd (white) with a metal frame.
It always feels good to celebrate the #CTDAppreciationDay 🌊🧪 (it's the white tube to the left in the rosette, the grey ones are Niskin bottles), here during our 2025 field work with @universitedeliege.bsky.social students, on-board the Simon Stevin, from @vliz.be. Muddy North Sea waters!! 😅
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Apparently it's #CTDAppreciationDay again. Please check out the most important tool in oceanography. 🌊
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Happy Conductivity, Temperature, Depth (CTD) Appreciation Day! Today, #BigelowLab is reflecting on this tool’s role as a pillar of our field. Pictured are Colby College students using a CTD aboard the R/V Bowditch in October 2025. #CTDAppreciationDay #ocean #science
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It’s probably oceanography’s most important tool. Today, warm deep water impinges onto the Amundsen Sea shelf, causing melting of the underside of floating ice shelves, destabilizing the glaciers. Here we deployed a CTD-rosette to precisely sample the inflow of this deep water.
#CTDAppreciationDay
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Credit: #URIGSO Ph.D. candidation, Philip Yang
A bird lands to rest on the CTD cable of the NOAA ship Nancy Foster during the May 2025 NF2503 expedition off the coast of Louisiana and Alabama.
#CTDAppreciationDay 🌊 🚢
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12 Rhode Island educators stepped into the role of shipboard scientists aboard #RVEndeavor for a three-day research cruise, steaming 100 miles out to the shelf break and back. They worked with #URIGSO scientists, crew, & marine techs to conduct CTD profiles! #CTDAppreciationDay 🌊 🚢
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Credit: #URIGSO marine research associate, Heather Stoffel
Members of the MERL lab at #URIGSO documenting the spatial extent of hypoxia in Narragansett Bay near Quonset Point.
#CTDAppreciationDay 🌊 🚢
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Credit: #URIGSO marine research associate, Pierre Marrec
Credit: #URIGSO marine research associate, Pierre Marrec
Summer fieldwork for the Ocean Margins Initiative (OMI) project in Ghana, co-led by #URIGSO's Melissa Omand. The new Seabird SBE 55 ECO CTD was purchased by the University of Ghana, with installation aboard the Ghanaian Navy vessel GNS AFLAO.
#CTDAppreciationDay 🌊 🚢
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Credit: #URIGSO Ph.D. student, Alyssa Tsukada
Credit: #URIGSO Ph.D. student, Alyssa Tsukada
Credit: #URIGSO Ph.D. student, Alyssa Tsukada
On the NES-LTER (@nes-lter.bsky.social) winter cruise aboard the #RVNeilArmstrong, the science team conducted incubation experiments to better understand plankton grazing behavior across the northeast shelf.
#CTDAppreciationDay 🚢 🌊
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📸 #URIGSO student Alyssa Tsukada collecting weekly data for the Narragansett Bay Long-Term Plankton Monitoring program on the Cap’n Bert. ❄️
🌊 🚢 Happy #CTDAppreciationDay! The #CTD measures conductivity, temperature, and depth, and supports countless #URIGSO research efforts! ⬇️ ⬇️ ⬇️
📸 #URIGSO student Alyssa Tsukada collecting weekly data for the Narragansett Bay Long-Term Plankton Monitoring program on the Cap’n Bert, in the snow!
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Happy #CTDAppreciationDay from the #LivingBioreactors cruise on the Falkor too. Our CTD is friends with an ISIIS-DPI shadowgraph camera. @schmidtocean.bsky.social @mbarinews.bsky.social #OBVI
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🌊 Happy #CTDAppreciationday to all you who celebrate!!!
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I can't believe that @clarkgrichards.bsky.social forgot to include an example of an #Argo float for #CTDAppreciationDay, one of the most important CTD-equipped platforms for understanding the global ocean. There are currently 4091 operational floats, profiling every 10 days and sending data back! 🌊
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I forgot to post this yesterday for #CTDAppreciationDay ...it's the "Nansen bottle chant" written and performed by SEA Education Assoc founders and participants in the 80s.
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A CTD rosette is lowered over the side of a Canadian Coast Guard icebreaker (the CCGS Pierre Radisson) in the Canadian Arctic Archipelago during a field program in August 2024. The sky is grey with wildfire smoke from wildfires in the Northwest Territories.
Fisheries and Oceans Canada employee Mandi Newhook samples water from the Niskin bottles attached to the small CTD rosette in the Canadian Arctic. Components of a soon-to-be-deployed mooring (yellow streamlined floatation) rest in the background.
A close-up look at the business end of a Rockland Scientific "microCTD", which contains a small inductive CTD manufactured by JFE in addition to the microstructure shear and temperature probes that allow the instrument to measure centimeter-scale variations in the ocean.
A view of the dual CTDs mounted on a SeaExplorer ocean glider, including a pumped SBE CTD on the nose as well as an inductive RBR CTD attached to the body (red).
I almost forgot about #CTDappreciationDay! There aren't many aspects of my job that don't rely on CTD data. Here are some photos of our trusted SBE CTD and rosette sampling the Canadian Northwest Passage, the cutest little CTD on a turbulence profiler (made by JFE), and a glider CTD made by RBR.
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What should the greeting be from one oceanographer to another on #CTDAppreciationDay be?
A: "May the cast be ever in your favor"
B: "What goes down must always come back up"
C: "This cast is always fresh with no modulo errors yet"
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Happy #CTDAppreciationDay! May the cast be ever in your favor!
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Happy #CTDAppreciationDay! You are a fabulous tool for ocean observation! 🌊 @planktonteuta.bsky.social @rejectedbanana.bsky.social
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Group of students watches a CTD instrument being deployed in Lake Tanganyika from a small boat.
Apparently it’s #CTDappreciationDay so here’s an old pic from 25 years(!) ago on Lake Tanganyika as part of the #NyanzaProject. Fantastic experience that summer. I miss fieldwork more than I can adequately express.
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Image of two seals, one with a CTD on it's head with an antenna sticking up and they look like they are chatting with each other. There is speech bubble on one that says "Look Frank I'm a narwhal", and the entire caption is "Sometimes I feel like I have an uncannily accurate sense of the temperature and salinity around me...."
What seals with CTDs on their heads are really thinking.
#CTDAppreciationDay
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A circuit board and a populated circuit board for the OpenCTD
Happy #CTDAppreciationDay! The next generation of the OpenCTD needs a little bit of polish, but the new board is good and the data is coming in clean! 🌊
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View of the Triton Submarine used by Victor Vescovo in the five deeps expedition from below. On the bottom are two CTDs, circled in pink
One of my favorite CTDs, one of three custom SBE 49s that went to the bottom of the Marianas Trench.
Rated to 12K meters, with super thick titanium casings, it pushed the limits of sensor engineering & performance. I know because I got to hold them and check out the data! #CTDAppreciationDay
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CTD aboard the F.G. Walton Smith during the Deepwater Horizon response with flaring from one of the drill ships in the background
For
#CTDAppreciationDay
my first Bluesky post: We were tracking the oil plumes at depth using the CTD and UV fluorometer from the F.G. Walton Smith during the Deepwater Horizon response. This was the morning after the flaring started from one of the relief drilling ships.
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Happy #CTDAppreciationDay!
Here I show you the latest kids on the team: two SBE45 before assembling in our underway equipments.
The core 💙 of BOGAR! 🚣🏽
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