International journal of hydrogen energy journal

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Specific science questions address three oceanographic properties: buoyancy, momentum, and heat. What are the causes and consequences of the changing upper ocean stratification (mixed layer and Pacific Water). Vertical: What is the interplay among wind entrainment, convection, solar heating, and buoyancy input. Lateral: What is the importance of heterogeneity in mesoscale and submesocale processes. What is the fate and impact of the significant increase in upper ocean heat (and the associated sound channel).

What processes control the near surface temperature maximum formation international journal of hydrogen energy journal release. How difficult is it for the mixed layer to entrain and access heat carried in the Pacific Water, and how does it vary with sea ice conditions.

Time series of Northern Hemisphere sea ice extent anomalies in March (the month of maximum ice extent) and September (the month of minimum ice extent).

The black and red dashed lines are least squares linear regression lines. From Perovich et al. A time series of sea ice age in March from 1985 to the present (top) источник статьи maps of sea ice age in March 1985 (lower left) and March 2015 (lower right).

We wrapped up our second module a few days ago, which revolved around what we believe was a warm coastal current that separated possibly around Barrow and headed into the main basin. We first spied this feature in an image from NIC, and then followed that up with a few targeted acquisition high-resolution SAR 'strip chart' images from CSTARS.

I've never been on a cruise with such a productive integration. It's going to be hard to ever come back without them now. We were fascinated by these images and thought they were suggestive of a warm current, which geographically could be the Alaskan Coastal Current or some derivative thereof, that tried to round Pt.

Barrow, brittany johnson too much international journal of hydrogen energy journal, separated, carried forward offshore, and then plowed full speed into this big remnant ice conglomeration that's been hanging around this area all summer.

Per usual adaptive sampling, it took us a little while to put that image together with the story we could figure out by poking holes in the ocean in situ in various ways. Numerous SWIFT and wire-walker drifting assets were deployed and recovered several times in it, and we spent several days alternating microstructure and Fast CTD suveys. Overview SAR images from NIC (outer scale) and CSTARS (inner scale) of the feature we were tracking.

Sub-surface view of temperature data through the warm current, looking from the west towards the east. This includes data from the Fast CTD, Microstructure profiler, and the drifting profiling wire-walker. Same as Figure 2, but now the perspective is from the east.

A high-resolution microstructure cross-section (at the location indicated with the blue box in Figure 1). Panels from top to bottom are Temperature, Salinity, Turbulent dissipation rate, Zonal and Meridional velocity. At points this water extended all the way to the surface, but for most of it there was a fresher surface layer skidding on top, picking up перейти на страницу from below at rates we tried to quantify with microstructure.

At the leading (eastern) side of the mushroom, this warm current appeared to encounter a different water mass flowing modestly to the northwest international journal of hydrogen energy journal the main gyre circulation). The 100-m tall wire-walker, released up-stream, rocketed west with the current and took the northern route, providing us an excellent Lagrangian point to follow. At the confluence point there was evidence of a variety of smaller scale eddying structures that were stirring some of this (dense) warm water up, and swirling it sideways and downward along isopycnals, wrapping up like international journal of hydrogen energy journal made of spice.

There was a strong boundary of loose ice demarcating the water mass confluence spot, just as was visible in the SAR images. A small flotilla of SWIFT drifters and some CTD sampling conducted from the Sikuliaq work boat conducted near this junction helped see the complex very near-surface story of one water mass partly sliding under another. Plan view map of near-surface temperature from the ship and взято отсюда SWIFT drifters (color), with near-surface currents (arrows).

A group on deck prepares PIES instruments for deployment. Bundled up watch-standers profile the Fast CTD framed by a 'fog-bow'. Inter-agency coordination at its international journal of hydrogen energy journal NOAA Twin Otter airplane conducting areal sampling, in support of an ONR-funded cruise, on an NSF-owned ship.

After a hectic few days of loadout, we sailed from Nome on 14 September to calm seas and sunny skies. Great views of Dutch Harbor leaving port, and a tail wind pushing us along, accelerating our international journal of hydrogen energy journal toward the Arctic. Http:// we have an international collection of research teams, supported by the excellent US Coast Guard team aboard the icebreaker Healy.

The first couple of days were international journal of hydrogen energy journal simply loading, sorting, and setting up the diverse collection of instruments we'll be using to study the atmosphere, sea ice, and upper ocean. These include the long, international journal of hydrogen energy journal floats that will sit at the top of our international journal of hydrogen energy journal moorings, carrying instruments to по этой ссылке swaths of ice draft and profiles of water нажмите для продолжения, the small, buoyancy-driven autonomous Seagliders and SGX Ukoniq Tablets)- FDA international journal of hydrogen energy journal will sample around the moorings for the coming year, and the collection of instruments that will be deployed onto the ice, to drift with the floes through the coming winter international journal of hydrogen energy journal spring, collecting measurements of the atmosphere, snow and sea ice, and upper ocean.

There's a second high-bay where we'll build out some of the larger components for the moorings. Sea ice lingers over our northern mooring sites, and a patch of loose, remnant ice surrounds the southern site. Winds and melt will likely clear the southern site before we arrive, but ice may linger to the north. This is good news for the ice-based instruments, as it means it should be easier for us to find large, thick floes to deploy onto.

We're about to anchor offshore of Nome, for a brief stop to pick up some equipment. From there we will continue through the Bering Strait and into the Arctic Ocean. We've spent the last week, the first full one of the SODA process cruise, surveying near the Chukchi shelf break. This area marks an important boundary between warmer, saltier water flowing in from the Pacific through Bering Strait, and the international journal of hydrogen energy journal, fresher продолжить чтение waters of the Arctic.



16.04.2020 in 05:17 getatsia:
Автор по времени это все писать во сколько встает ?