Making the world's public oceanographic data easily available and sortable is behind Marinexplore's platform, and the current iteration allows users to visualize and combine satellite data with in - situ
ocean measurements from 10 different ocean platforms.
Earth's global average surface temperature has risen as shown in this plot of combined land and
ocean measurements from 1850 to 2012, derived from three independent analyses of the available data sets.
Bigelow Laboratory for Ocean Sciences researchers have developed a statistical method to quantify important
ocean measurements from satellite data, publishing their findings in the journal Global Biogeochemical Cycles.
Not exact matches
The researchers studied temperature
measurements over the last 150 years, ice core data
from Greenland
from the interglacial period 12,000 years ago, for the ice age 120,000 years ago, ice core data
from Antarctica, which goes back 800,000 years, as well as data
from ocean sediment cores going back 5 million years.
Thanks to Swarm's precise
measurements along with those
from Champ — a mission that ended in 2010 after measuring Earth's gravity and magnetic fields for more than 10 years — scientists have not only been able to find the magnetic field generated by
ocean tides but, remarkably, they have used this new information to image the electrical nature of Earth's upper mantle 250 km below the
ocean floor.
Roger Haagmans, ESA's Swarm mission scientist, explained, «It's astonishing that the team has been able to use just two years» worth of
measurements from Swarm to determine the magnetic tidal effect
from the
ocean and to see how conductivity changes in the lithosphere and upper mantle.
Millan, a UCI graduate student researcher in Earth system science, and his colleagues analyzed 20 major outlet glaciers in southeast Greenland using high - resolution airborne gravity
measurements and ice thickness data
from NASA's Operation IceBridge mission; bathymetry information
from NASA's
Oceans Melting Greenland project; and results
from the BedMachine version 3 computer model, developed at UCI.
Any number of background noises can scuttle the delicate
measurement — LIGO can also hear
ocean waves pounding distant coastlines, airplanes flying overhead and even the seismic hum
from washing machines.
But temperature
measurements taken off the continent's coast found warm water brewing up
from the
ocean depths.
Four days after its launch on 17 January, the Jason - 3 high - precision
ocean altimetry satellite is delivering its first sea surface height measurement data in near - real time for evaluation by engineers from the Centre National d'Etudes Spatiales (CNES), EUMETSAT, the US National Aeronautics and Space Administration (NASA) and the National Oceanic and Atmospheric Administration (NOAA) and scientists from the international Ocean Surface Topography Science
ocean altimetry satellite is delivering its first sea surface height
measurement data in near - real time for evaluation by engineers
from the Centre National d'Etudes Spatiales (CNES), EUMETSAT, the US National Aeronautics and Space Administration (NASA) and the National Oceanic and Atmospheric Administration (NOAA) and scientists
from the international
Ocean Surface Topography Science
Ocean Surface Topography Science Team.
They compared isotope
measurements on the silica skeletons of diatoms, which store environmental signals
from the
ocean's surface, with isotope signals
from radiolarians, which live in deeper water layers.
Co-author Nerilie Abram,
from the Australian National University, said: «In order to better understand climate change in Antarctica, we need continued climate
measurements in the Antarctic and Southern
Ocean, and extension of these short observational records with past climate reconstructions and climate modelling.»
Combining the seismic data with
measurements from sediment samples previously retrieved
from this region through
ocean drilling, they found that while the thickness of the incoming sediment is similar offshore of Washington and Oregon, the compaction is very different.
NSCAT will provide regular
measurements of
ocean surface wind velocity
from space.
Last year, Hurricane Matthew rapidly intensified
from a tropical storm to hurricane status as it moved over the Caribbean Sea in the location where a warm
ocean eddy exists, and in close proximity to where these
measurements were taken for this study two years prior.
This is the first time we've been able to quantify it
from direct
measurements in the
oceans.»
«By analyzing the scattering signals that we got
from satellite
measurements of the
ocean's color, we were able to develop techniques to calculate how much of the biomass occurs in very large or very small particles.»
That same year a European probe that had traveled with Cassini plunged into the thick, foggy atmosphere of the moon Titan and — together with the mother ship's
measurements from above — found evidence of an
ocean of ammonia and water hidden beneath a stunning landscape of dunes, mountains, and rivers.
And
measurements of the pH level in the
ocean over the past two decades show precisely the slow reduction that is expected
from such a rise in carbon dioxide.
Ocean surface height
measurements are routinely made
from space by radar altimeters, but this new study is the first that uses the GPS reflections.
Dr Samantha Gibbs,
from Ocean and Earth Science at the University of Southampton, who was Dr O'Dea's PhD supervisor and co-author of the study, says: «A key objective was to record calcification in fossil coccolithophores in a way that enabled direct comparison with
measurements from living specimens.
The past climates that forced these changes in ice volume and sea level were reconstructed mainly
from temperature - sensitive
measurements in
ocean cores
from around the globe, and
from ice cores.
Buoys have increased global coverage of the
oceans by up to 15 percent since the 1970s, but they have a known cold bias compared to
measurements taken
from ships.
Khazendar and his team, analyzing their direct radar
measurements, found stunning rates of ice loss
from the glaciers» undersides on the
ocean sides of their grounding lines.
To do this, they combined
ocean wave data available
from measurements taken by
ocean buoys, with nonlinear analysis of the underlying water wave equations.
It's not clear where the methane is coming
from, but the HIPPO
measurements suggest the amount released by the
ocean is «of sufficient size to be important globally,» he added.
Collaborative products range
from published papers that build realistic radiative transfer models
from within the
ocean to the top of the atmosphere to the assembly of novel databases that contain
ocean and atmospheric
measurements useful to develop novel algorithms.
Scientists announced Thursday that
measurements from NASA's Cassini spacecraft detected hydrogen gas, a key energy source for microbial life, in a plume gushing
from a vast liquid water
ocean buried beneath the icy shell of Saturn's moon Enceladus.
South of Spitzbergen, the
oceans have been ice free the past 2 winters, reason being, the warm waters
from the Gulf Stream are travelling further north, and closer to the
ocean surface, only 25 meters at the last
measurement, The
ocean temperature has been +2 C instead of -2 C.
Furthermore, by knowing the mass of a planet
from radial velocity
measurements and the radius of a planet based on how much starlight it blocked, it is a simple calculation to determine a planet's density, which can tell astronomers whether that planet is rocky or gaseous in nature, or whether it has a small core and a thick atmosphere, or whether it has a large core covered in deep
oceans.
That's the conclusion of a new study that used
measurements of an array of human pressures on the
ocean —
from acidification to overfishing — to make a map of where those factors combined into stressed - out hotspots, as well as how the combinations of stressors had changed over time.
Thus, during an El - Nino, much of the heat content of the Indo - Pacific warm pool moves
from being too deep for surface
measurements to detect, to being spread out on the surface of the
ocean, where surface
measurements can detect it.
The authors point out that Cassini's gravity
measurements suggest Enceladus» rocky core is quite porous, which would allow water
from the
ocean to percolate into the interior.
What we think of as the modern temperature record is made up of many thousands of
measurements from the air above land and the
ocean surface, collected by ships, buoys and sometimes satellites, too.
While
measurements of
ocean heat going down to 700 metres have showed declining heat accumulation, von Schuckmann 2009 shows that
measurements of
ocean heat going down to 2000 metres find the
oceans have been steadily accumulating heat at 0.77 W / m2
from 2003 to 2008.
You've got the radiative physics, the
measurements of
ocean temperature and land temperature, the changes in
ocean heat content (Hint — upwards, whereas if if was just a matter of circulation moving heat around you might expect something more simple) and of course observed predictions such as stratospheric cooling which you don't get when warming occurs
from oceanic circulation.
ATom will gather
measurements of more than 200 different gases, as well as aerosols
from the air near the
ocean surface to approximately seven miles altitude.
Using funding
from the European Space Agency, the researchers,
from Europe, the U.S. and India, concluded that using satellite data in this way may be «the most efficient way to monitor the
ocean surface» — yet the «potential capabilities of space - based
measurements» in
ocean acidification research «remain largely untapped.»
«This point here is that
ocean water is accessing further inland than we'd assume
from those satellite
measurements.»
Anyone who insists otherwise (that it comes
from the
ocean — despite the isotopic evidence, budget and direct
measurements of increasing
ocean carbon) is living in cloud - cuckoo land.
And since we don't have good
ocean heat content data, nor any satellite observations, or any
measurements of stratospheric temperatures to help distinguish potential errors in the forcing
from internal variability, it is inevitable that there will be more uncertainty in the attribution for that period than for more recently.
An apparent inconsistency has been diagnosed between interannual variations in the net radiation imbalance inferred
from satellite
measurements and upper -
ocean heating rate
from in situ
measurements, and this inconsistency has been interpreted as «missing energy» in the system2.
A fresh analysis of thousands of temperature
measurements from deep - diving Argo
ocean probes shows (yet again) that Earth is experiencing «unabated planetary warming» when you factor in the vast amount of greenhouse - trapped heat that ends up in the sea.
Note that this sampling noise in the tide gauge data most likely comes
from the water sloshing around in the
ocean under the influence of winds etc., which looks like sea - level change if you only have a very limited number of
measurement points, although this process can not actually change the true global - mean sea level.
The integrated measures
from large - scale
ocean salinity
measurements are quite good, but it is difficult to work out exactly where that freshwater has come
from.
Satheesh and Ramanathan [2000] infer
from satellite and surface
measurements that aerosol heating in the lower atmosphere over the northern Indian
Ocean at local noon is 1 - 3 K / day, an increase of 50 - 100 % over aerosol - free solar heating.»
There is definitely more to learn about how climate behaves and there are now data sets for
ocean warming and carbon dioxide distribution that could benefit
from better surface temperature
measurements.
This is very encouraging for the future application of
measurements from sea - going spectral radiometers, as instruments not only for the validation of satellite - derived SST but also for studying the physics of the
ocean skin temperature layer.
The model variables that are evaluated against all sorts of observations and
measurements range
from solar radiation and precipitation rates, air and sea surface temperatures, cloud properties and distributions, winds, river runoff,
ocean currents, ice cover, albedos, even the maximum soil depth reached by plant roots (seriously!).
Hatun et al. also used altimeter data (local sea level height
measurements from satellite observations) to diagnose the norther
oceans gyre circulation.