McGregor, S., Sen Gupta, A. & England, M. H. Constraining wind stress products
with sea surface height observations and implications for Pacific Ocean sea - level trend attribution.
Not exact matches
In the early 1990s the TOPEX (Topography Experiment for Ocean Circulation) / Poseidon satellite, a joint American - French mission, shot into orbit armed
with radar altimeters to measure the
height of the
sea surface.
This visualization shows side by side comparisons of Pacific Ocean
sea surface height anomalies of what is presently happening in 2015
with the Pacific Ocean signal during the famous 1997 El Niño.
Many NASA satellites observe environmental factors that are associated
with El Niño evolution and its impacts, including
sea surface temperature,
sea surface height,
surface currents, atmospheric winds and ocean color.
The
sea surface height map is consistent
with active deep convection in the winters of 2015 and 2016.
where Vp is the potential maximum wind speed, Ts is the
surface temperature, Tt is the tropopause temperature, hs * is the saturation moist static energy of the
sea surface, and h * is the saturation moist static energy of the free troposphere, which is nearly uniform
with height if the lapse rate is moist adiabatic.
Several studies have shown that observations of
sea surface height (SSH) are strongly correlated
with the thermal structure of the upper ocean (e.g. Goni et al. 1996; Gilson et al. 1998; Mayer et al. 2001; Willis et al. 2004).
The second is what is termed as «steric change» — a scientific phrase that both identifies ocean thermal expansion due to warming combined
with changes in ocean salinity, which also impacts
sea surface height.
Together
with overall global temperatures,
sea surface heights stayed at about the same levels until the late 1800s.
The altimeter satellite multi-mission gridded
sea surface heights and derived variables are computed
with respect to a twenty - year mean reference period (1993 - 2012).
Trends in near
surface winds and geopotential
heights over the high - latitude South Pacific are consistent
with a role for atmospheric forcing of the
sea ice and air temperature anomalies.
Results show increased
sea surface heights (SSH) in the west equatorial Pacific over the last two decades associated
with increased easterly
surface winds.
Another paper, [7] which they also cite, instead derives an equilibrium air —
sea surface warming differential from a theoretical model based on an assumed relative humidity
height profile,
with thermal inertia playing no role.
They also find that the primary contribution to storm surges in the region are
sea surface height anomalies from the Pacific,
with local wind patterns causing small spatial differences in the
sea surface height.
--- Atmospheric mass and composition: approx. 510 trillion m ^ 2 (
surface area) * 0.1013 MPa (
surface pressure) / 9.81 m / s ^ 2 = 5.266 E18 kg = 5.266 million Gt Hartmann, «Global Physical Climatology», p. 8 gives 5.136 million Gt (the difference could be due to actual average
surface pressure being lower than average
sea level pressure; counteracting that, gravity decreases
with height (not much over most of the mass of the atmosphere) and I think global average g may be less than 9.81 (maybe 9.80?)