Or it could simply be an artifact of
sea level records from tide gauges (pictured), which are particularly spotty in the early part of the 20th century.
Not exact matches
From disease to weather patterns, the meltdown of Arctic
sea ice — close to
record levels again this year — is changing the globe
The new
sea -
level record was then used in combination with existing deep -
sea oxygen isotope
records from the open ocean, to work out deep -
sea temperature changes.
Similarly heavy rain fell on Australia in 1973 - 74, but
sea -
level records from then are not detailed enough to draw conclusions, and the three climate systems might not align again for decades.
The biggest marine landslide ever
recorded happened 7,200 years ago off the coast of Norway, and there was a tsunami, but it was a far cry
from leaving deposits 200 meters above
sea level,» Bryant says.
At a monitoring point in the
sea 330 metres south of the main water outlet
from the plant,
levels of iodine - 131 were 3355 times the limit;
levels 1263 times the limit were
recorded 30 metres to the north.
The Tokyo Electric Power Company (Tepco), which owns the plant,
recorded high
levels of radioactivity in a drainage ditch that runs to the
sea from the tank, but could not detect anything in the seawater itself.
Complementary analyses of the surface mass balance of Greenland (Tedesco et al, 2011) also show that 2010 was a
record year for melt area extent... Extrapolating these melt rates forward to 2050, «the cumulative loss could raise
sea level by 15 cm by 2050 ″ for a total of 32 cm (adding in 8 cm
from glacial ice caps and 9 cm
from thermal expansion)- a number very close to the best estimate of Vermeer & Rahmstorf (2009), derived by linking the observed rate of
sea level rise to the observed warming.
See Page 4 - 22, Figure 9: Geomagnetic field intensity
level derived
from composite volcanic
records, not
sea floor sediments, for the past 45 kyr.
A new paper by Levermann et al. in PNAS uses the
record of past rates of
sea level rise
from palaeo archives and numerical computer models to understand how much
sea level rise we can expect per degree of warming in the future.
Background shading in the
seas indicate the observed
sea level change
from 1993 to 2016
recorded by satellites.
They compared existing National Oceanic and Atmospheric Administration (NOAA)
records of upper - ocean temperatures in coastal waters for each U.S. ocean coastline with
records of actual
sea level changes
from 1955 to 2012, and data
from U.S. / European satellite altimeter missions since 1992.
Abstract: Mid - to late - Holocene
sea -
level records from low - latitude regions serve as an important baseline of natural variability in
sea level and global ice volume prior to the Anthropocene.
Mitrovica, J. X. & Davis, J. L. Present - day post-glacial
sea level change far
from the Late Pleistocene ice sheets: implications for recent analyses of tide gauge
records.
Carling Hay et al. provide a statistical reassessment of the tide gauge
record which is subject to bias due to sparse and non-uniform geographic coverage and other uncertainties and conclude that
sea -
level rose by about 1.2 millimetres per year
from 1901 to 1990.
Ocean heating accounts for about 40 percent of global
sea level rise, because water expands as it warms up; global average
sea level from January through November was also a
record high, the WMO said.
Throughout the
record, they found that a combination of two naturally - occurring climate patterns — the El Niño Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO)-- were associated with «hot spots» of
sea level rise along the Eastern seaboard, including the southeastern hot spot
from 2011 to 2015.
reconstructing
sea -
level and ice - sheet changes on timescales ranging
from the 20th century, to the late Holocene, to the last 150 thousand years, through statistical and geophysical modeling of geological and observational
records;
Skoda has released a video of a Skoda Karoq that was driven up to 5,350 metres above
sea level in the Himalayas to support cyclists attempting to break a
record on the route
from Leh to Khardung La -
Drawing
from actual
recordings of Larsen C — the fourth largest ice shelf in Antarctica, which is rapidly melting — the artists created a haunting, contemplative soundtrack and immersive installation that reminds viewers of the threat of
sea level rise and climate change.
In a second step, we apply the method to reconstructing 2 - D
sea level data over 1950 — 2003, combining sparse tide gauge
records available since 1950, with EOF spatial patterns
from different sources: (1) thermosteric
sea level grids over 1955 — 2003, (2)
sea level grids
from Topex / Poseidon satellite altimetry over 1993 — 2003, and (3) dynamic height grids
from the SODA reanalysis over 1958 — 2001.
Shown is the past history of
sea level since the year 1700
from proxy data (sediments, purple) and multiple
records from tide gauge measurements.
This is the first
sea -
level record from the southern hemisphere showing a significantly higher rate of
sea -
level rise during the 20th century as compared with preceding centuries.
«This study investigates past
sea level reconstruction (over 1950 — 2003) based on tide gauge
records and EOF spatial patterns
from different 2 - D fields.
Mike's work, like that of previous award winners, is diverse, and includes pioneering and highly cited work in time series analysis (an elegant use of Thomson's multitaper spectral analysis approach to detect spatiotemporal oscillations in the climate
record and methods for smoothing temporal data), decadal climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing
from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global
sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measurements).
Constraints on the amplitude of Mid-Pliocene (3.6 - 2.4 Ma) eustatic
sea -
level fluctuations
from the New Zealand shallow - marine sediment
record.
The issues relating to
sea level rise and the global water budget can only be addressed when the
record of satellite gravity measurement
from GRACE achieves adequate duration.
I certainly don't think we'll melt all of Antarctica or even Greenland, but we know
from the paleo
record very significant melting and
sea level rise are possible once the warming epoch gets under way.
Last year, Arctic
sea ice fell to the lowest
level ever
recorded by satellite, 39 percent lower than the long - term average
from 1979 to 2000.
Looking at global data (rather than tide gauge
records just
from the U.S.) show that
sea level rise has been increasing since 1880.
(09/12/2011) Arctic
sea ice cover fell to its lowest
level on
record, report researchers
from the University of Bremen.
A paper by Houston & Dean studies 57 tide gauge
records from the U.S. (including Hawaii and oceanic territories) and concludes that
sea level rise has not accelerated.
Why use individual tide gauge
records when we have perfectly good combinations,
from much larger samples, which give a global picture of
sea level change and show vastly less noise?
if you google «colorado
sea level records» there's some great info there, puzzlingly they recently removed (or moved) a lot of data
from their site on the older readings - howoever i stored it locally somewhere so if you need it i'll try dig it out.
There are degrees of everyone's positions here
from those who think the IPCC is wrong because it is much too conservative through those who think the IPCC got it perfectly right to those who think the arctic
sea ice has recovered because the
record low
level is now three years old through those who believe the GHE violates the laws of thermodynamics.
Scientific information with fact sheets about everything
from sea level rise to global temperature
records.
Individual model parameterizations were constrained by paleontological data, and the overall modeled relationship between global temperature and
sea level matched well against
records from four previous warm periods: preindustrial, the last interglacial, marine isotope stage 11, and the mid-Pliocene.
I always take comfort
from the fact that if people like Eli don't believe in the temperature satellite
record, then it surely follows that they obviously won't believe in the
sea level and
sea ice satellites either.
The Arctic's
sea ice pack thawed to its third - lowest summer
level on
record, up slightly
from the seasonal melt of the past two years but continuing an overall decline symptomatic of climate change, U.S. scientists said on Thursday.
Local
sea level change, which is what really matters, is more directly and more effectively estimated
from tide gauge
records than
from satellites.
«Carbon choices determine US cities committed to futures below
sea level» «Economic impacts of climate change in Europe:
sea -
level rise» «Future flood losses in major coastal cities» «Forecasting the effects of accelerated
sea -
level rise on tidal marsh ecosystem services» «Coral islands defy
sea -
level rise over the past century:
Records from a central Pacific atoll»
This especially applies to interpretation of acceleration in GMSL using only the 20 - year
record of
from satellite altimetry and to evaluations of short
records of mean
sea level from individual gauges.»
The latest studies on Arctic
sea ice indicate that
sea ice cover during the 20th century did not depart significantly
from the
record sea ice
levels during the Little Ice Age (1600 — 1700 AD).
«A high - resolution
record of Greenland mass balance» «Antarctica, Greenland and Gulf of Alaska land - ice evolution
from an iterated GRACE global mascon solution» «Greenland and Antarctica ice sheet mass changes and effects on global
sea level»
Combine the satellite trend with the surface observations and the umpteen non-temperature based
records that reflect temperature change (
from glaciers to phenology to lake freeze dates to snow - cover extent in spring & fall to
sea level rise to stratospheric temps) and the evidence for recent gradual warming is, well, unequivocal.
Here, we present a comparable
record of
sea -
level change using a modern dataset of foraminifera collected
from two micro-tidal (< 0.4 m) salt - marsh sites along the central Croatian coastline.
Lastly, even the
record low Arctic ice
levels may have influence over these types of storms by messing with the Jet Stream and blocking the storms
from heading out to
sea, instead shoving into the east coast.
C: increase in atmospheric CO2
from pre-industrial to present is anthropogenic (D / A) S: best guess for likely climate sensitivity (NUM) s: 2 - sigma range of S (NUM) a: ocean acidification will be a problem (D / A) L: expected
sea level rise by 2100 in cm (all contributions)(NUM) B: climate change will be beneficial (D / A) R: CO2 emissions need to be reduced drastically by 2050 (D / A) T: technical advances will take care of any problems (D / A) r: the 20th century global temperature
record is reliable (D / A) H: over the last 1000 years global temperature was hockey stick shaped (D / A) D: data has been intentionally distorted by scientist to support the idea of anthropogenic climate change (D / A) g: the CRU - mails are important for the science (D / A) G: the CRU - mails are important otherwise (D / A)
In an email exchange
from April of 2014 obtained by a
records request, a communications official working for the Department of Environmental Protection (DEP) in Florida instructed a scientist to «make no claims as to cause» of Florida's
sea level rise.
An evaluation of the status of late Holocene
sea level rise constructions is provided in a recent proposal by an international group of
sea level experts (including Kopp), entitled: Towards a unified
sea level record: assessing the performance of global mean
sea level reconstructions
from satellite altimetry, tide gauges, paleo ‐ proxies and geophysical models.