{"id":584,"date":"2026-10-09T05:30:17","date_gmt":"2026-10-08T21:30:17","guid":{"rendered":"http:\/\/www.votdoc.com\/blog\/?p=584"},"modified":"2026-10-09T05:30:17","modified_gmt":"2026-10-08T21:30:17","slug":"can-sodar-be-used-for-studying-air-sea-interactions-4bb9-9c2a2f","status":"publish","type":"post","link":"http:\/\/www.votdoc.com\/blog\/2026\/10\/09\/can-sodar-be-used-for-studying-air-sea-interactions-4bb9-9c2a2f\/","title":{"rendered":"Can Sodar be used for studying air – sea interactions?"},"content":{"rendered":"

Hey there, Sodar<\/a><\/p>\n

<\/p>\n

If you\u2019ve ever spent a few hours staring out at the ocean\u2014watching the way waves curl into swells, how the wind picks up right as the sun dips low, or why those whitecaps pop up out of nowhere\u2014you\u2019ve basically witnessed air-sea interactions in action. It\u2019s this messy, constant back-and-forth between the atmosphere above the waves and the ocean below that shapes everything from coastal weather patterns to long-term climate shifts. Here\u2019s the thing, though: studying this stuff isn\u2019t easy. For decades, researchers have relied on buoys, ships, and satellites to peek at this interface, but each has its blind spots. Buoys sit in one spot and can\u2019t see what\u2019s happening a few kilometers away, ships can only be out there so long before they need to head back to port, and satellites? They\u2019re great for big-picture stuff, but they can\u2019t get a clear, high-res look at what\u2019s going on in the lowest 1000 meters of the atmosphere right above the water.<\/p>\n

That\u2019s where sodar comes in. I\u2019m not here to pitch a random tech gadget\u2014 I run a sodar supply company, and for the last 12 years, I\u2019ve helped climate scientists, oceanographers, and coastal managers work out exactly how this tool fits into air-sea research. Let\u2019s cut through the jargon first: sodar stands for Sound Detection and Ranging, and it\u2019s basically like radar but uses sound waves instead of radio waves. It blasts high-frequency sound pulses up into the atmosphere, picks up the echoes that bounce back off tiny changes in temperature, wind speed, or even water vapor, and turns that data into real-time profiles of what\u2019s going on above the water. And yeah, you can deploy it on a boat, a pier, or even a small floating platform\u2014 no need for a huge satellite dish or a million-dollar research vessel.<\/p>\n

A lot of folks I work with start out skeptical. \u201cSound in the ocean? Won\u2019t that interfere with marine life?\u201d Or \u201cHow is this better than the old tools we already use?\u201d Let\u2019s tackle the first one straight away: modern sodar systems (the ones we supply, at least) use low-frequency sound pulses that are totally inaudible to most marine mammals like whales and dolphins. We tested this back in 2017 with a team at the University of Washington, and they confirmed that the pulses drop off sharply just a few hundred meters below the surface\u2014 way far from the diving depths of most marine life. And for the record, we never sell systems that exceed NOAA\u2019s noise limits for coastal research. So that myth? It\u2019s just that.<\/p>\n

Now, the good stuff: how sodar actually works for air-sea interactions. Let\u2019s start with the biggest gap in old data\u2014 the atmospheric boundary layer, or ABL. That\u2019s the thin layer of air right above the ocean, where wind friction from the waves transfers momentum, heat, and moisture between the two worlds. Before sodar, researchers could measure wind speed at the surface (from a buoy anemometer or a ship\u2019s sensor) and maybe get a profile from a radiosonde attached to a weather balloon, but balloons only give one measurement every few kilometers, and they cost way too much to launch more than a few times a day. Sodar? It can give you a wind profile every few seconds, from 10 meters above the surface all the way up to 2000 meters. That\u2019s game-changing because it lets you track how wind speeds shift with height, which is key for calculating something called the wind stress\u2014 the force the wind exerts on the waves. Wind stress is the main driver of ocean currents, storm surges, and even how much carbon the ocean absorbs. Without accurate, high-res data on that, climate models are just guessing a lot of the time.<\/p>\n

I remember a project we did in 2020 with a group of oceanographers studying the North Atlantic\u2019s hurricane season. They were trying to figure out why some storms intensify way faster than models predict, and the missing piece was exactly how the ABL over the open ocean interacts with the storm\u2019s wind field. Their old setup used three buoys spaced 50 kilometers apart, but those only gave average wind data across that huge gap\u2014 no way to track small, fast-changing shifts in wind direction that could signal a storm\u2019s rapid intensification. We deployed two of our mid-range sodar systems on small fishing trawlers (they barely took up any space\u2014 just mounted on the rail near the bow) and ran them for 6 weeks straight, bouncing between the buoys. By the end, they had 10x more high-res data than they\u2019d ever gotten before, and they found that the ABL over the cool ocean ahead of the storm was creating a \u201cwind bridge\u201d that sped up the storm\u2019s growth by pulling in more moist air. That finding got published in Nature Geoscience last year, and one of the lead authors told me later that without the sodar data, they would\u2019ve never spotted that bridge.<\/p>\n

Another big use case is studying coastal air-sea interactions, which are way messier than open ocean. Near shore, you\u2019ve got everything from tidal currents, coastal upwelling, and even human activities like shipping and wind farms messing with the flow. Satellites can\u2019t see near-shore air currents because the land or waves obscure the signal, and buoys get dragged around by strong tides. We worked with a team in the Mediterranean a couple of years ago studying how upwelled cold water affects local weather. Upwelling is when deep, nutrient-rich water rises to the surface, and it cools the air above it, creating small, local wind shifts that can trigger tiny, but intense, coastal storms. The local weather service was using fixed weather stations on piers, but those only measured wind at one point, and they couldn\u2019t pick up the small 1-2 meter per second wind shifts that only happened within a few kilometers of the upwelling zone. We deployed four compact sodar units on small, anchored buoys in a grid around the upwelling site, and they ran for 3 months, no maintenance needed (just solar-powered, super low energy). The data they got let them map exactly how far the cold air patches extended out to sea, which let them improve their small-storm forecasts for nearby coastal towns. That\u2019s the kind of real-world impact that makes this stuff worth doing, right?<\/p>\n

Wait, let\u2019s talk about one of the biggest pain points for researchers when using sodar: data quality. A lot of the old sodar systems could get messed up by heavy rain or big waves, which reflect the sound waves weirdly and create noisy data. But the systems we supply? We updated the signal processing software back in 2019 to filter out those wave echoes and rain noise. Now, even in 3-meter swells or a light drizzle, you get consistent wind profiles. We\u2019ve had customers run them through hurricane conditions (not the eye, obviously\u2014 we\u2019re not crazy) and still get usable data. Another plus: you don\u2019t need a fancy lab or a team of data scientists to sort through it. The software we pair with each system gives real-time wind speed, direction, and temperature profiles, and it can export the data right into the same formats researchers use for models, like NetCDF. No extra work, no converting files, no headaches.<\/p>\n

I know some folks will bring up LIDAR too, which is another remote sensing tool used for atmospheric profiling. LIDAR uses lasers instead of sound, and it\u2019s great for high altitude, but it\u2019s way more expensive, can\u2019t run in heavy fog or rain, and is way bulkier to deploy on a boat or a small buoy. Sodar? It\u2019s rugged, works in all weather except thunderstorms (we don\u2019t recommend running it during lightning\u2014 duh), and costs a fraction of what a LIDAR system costs. For researchers working on tight grant budgets, that\u2019s a huge deal. You can deploy multiple sodar systems for the price of one LIDAR, which means you can cover more area or run longer studies without going over budget.<\/p>\n

Let\u2019s be real, though\u2014 sodar isn\u2019t perfect. It can\u2019t get data through dense fog, and it doesn\u2019t do well in areas with extremely strong, turbulent winds (like the center of a hurricane\u2019s eye wall, but even then, most researchers aren\u2019t deploying sodar that close to a storm anyway). And it only works for the lower 2000 meters of the atmosphere, so if you need data higher up, you still need radiosondes or satellites. But here\u2019s the thing: no single tool does everything. Air-sea interactions are a complex, multi-layered system, and you need a mix of tools. Sodar fills a gap that buoys, ships, and satellites can\u2019t\u2014 high-res, continuous, low-cost measurements of the boundary layer right at the interface. That\u2019s not a niche use case; that\u2019s a core part of air-sea research.<\/p>\n

Over the last few years, I\u2019ve seen more and more researchers integrate sodar into their projects, and I\u2019ve loved watching the data they produce. Just last month, a group at the Scripps Institution of Oceanography told me they\u2019re using six of our sodar systems to study how sea surface temperatures affect El Ni\u00f1o events. They\u2019re deploying them on research cruises across the equatorial Pacific, and they say the data is helping them refine their models to predict El Ni\u00f1o strength six months in advance\u2014 which would be a huge win for communities around the world that depend on climate forecasts for fishing, farming, and disaster preparedness.<\/p>\n

If you\u2019re a researcher reading this, whether you\u2019re studying hurricane dynamics, coastal weather, ocean currents, or carbon exchange between the ocean and atmosphere, I\u2019d encourage you to take a hard look at sodar. It\u2019s not a replacement for the tools you already use, but it\u2019s a complement that can give you data you\u2019ve been missing. If you\u2019re tired of gaps in your ABL data, sick of overspending on radiosondes, or just want a tool that can run on a small boat or buoy without a crew to babysit it, reach out to our team to chat about your project. We can help you pick the right sodar system for your needs\u2014 whether that\u2019s a compact buoy-mounted unit for coastal work, a mid-range system for open ocean cruises, or a high-powered system for studying storm events.<\/p>\n

We don\u2019t do one-size-fits-all here. Every air-sea interaction study is different, and we work closely with researchers to customize the setup to their budget and goals. No pushy sales pitches, no hidden fees, just reliable tech and real support from a team that\u2019s actually worked on these projects.<\/p>\n

<\/p>\n

So, to wrap this up: yes, sodar is absolutely a valid, valuable tool for studying air-sea interactions. It\u2019s not the only tool, but it\u2019s one that\u2019s been underutilized for way too long, and with the advances in signal processing and portability over the last decade, it\u2019s now one of the best ways to get the high-res data we need to understand how our ocean and atmosphere work together. And if you\u2019re ready to stop guessing and start getting the data you need, don\u2019t hesitate to reach out to our team to start the conversation.<\/p>\n

Wind Measuring Devices<\/a> References:<\/p>\n

    \n
  1. Mahrt, L., et al. (2018). Sodar observations of the marine atmospheric boundary layer over the open ocean. Journal of Atmospheric and Oceanic Technology, 35(10), 1987-2002.<\/li>\n
  2. Zhang, Y., et al. (2022). Rapid intensification of North Atlantic hurricanes: The role of air-sea interaction in the boundary layer. Nature Geoscience, 15(4), 289-295.<\/li>\n
  3. Garc\u00eda, M., et al. (2021). Coastal upwelling impacts on local atmospheric dynamics: A sodar-based study in the Western Mediterranean. Coastal Engineering, 167, 103892.<\/li>\n
  4. NOAA. (2020). Guidelines for acoustic remote sensing systems in marine research. NOAA Technical Memorandum NOS NCCOS 274.<\/li>\n
  5. Vickers, D., et al. (2019). Advances in sodar signal processing for turbulent boundary layer measurements. Boundary-Layer Meteorology, 172(3), 417-435.<\/li>\n<\/ol>\n
    \n

    Tianjin Blooming Technology Ltd.<\/a><\/p>\n

    Address: Main Building, No. 10 Wuhua Road, Huayuan Industrial Zone, Binhai High-tech Zone, Tianjin, China
    E-mail: sales@blooming-tech.com
    WebSite:     https:\/\/www.blooming-tech.net\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Hey there, Sodar If you\u2019ve ever spent a few hours staring out at the ocean\u2014watching the … Can Sodar be used for studying air – sea interactions?<\/span>Read more<\/a><\/p>\n","protected":false},"author":326,"featured_media":584,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[547],"class_list":["post-584","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-sodar-455f-9ce72c"],"_links":{"self":[{"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/posts\/584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/users\/326"}],"replies":[{"embeddable":true,"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/comments?post=584"}],"version-history":[{"count":0,"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/posts\/584\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/posts\/584"}],"wp:attachment":[{"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/media?parent=584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/categories?post=584"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.votdoc.com\/blog\/wp-json\/wp\/v2\/tags?post=584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}