scholarly journals Recent near-Earth supernovae probed by global deposition of interstellar radioactive 60Fe

Nature ◽  
2016 ◽  
Vol 532 (7597) ◽  
pp. 69-72 ◽  
Author(s):  
A. Wallner ◽  
J. Feige ◽  
N. Kinoshita ◽  
M. Paul ◽  
L. K. Fifield ◽  
...  
Keyword(s):  
Global Deposition

scholarly journals The Effect of Atmospheric Acid Processing on the Global Deposition of Bioavailable Phosphorus From Dust

2018 ◽  
Vol 32 (9) ◽  
pp. 1367-1385 ◽  
Author(s):  
R. J. Herbert ◽  
M. D. Krom ◽  
K. S. Carslaw ◽  
A. Stockdale ◽  
R. J. G. Mortimer ◽  
...  
Keyword(s):  
Bioavailable Phosphorus ◽  
Acid Processing ◽  
Global Deposition

scholarly journals Global deposition of total reactive nitrogen oxides from 1996 to 2014 constrained with satellite observations of NO<sub>2</sub> columns

2017 ◽  
Vol 17 (16) ◽  
pp. 10071-10091 ◽  
Author(s):  
Jeffrey A. Geddes ◽  
Randall V. Martin
Keyword(s):  
North America ◽  
Nitrogen Oxides ◽  
East Asia ◽  
Major Constituent ◽  
Reactive Nitrogen ◽  
Nox Emissions ◽  
The World ◽  
Reactive Nitrogen Oxides ◽  
Global Deposition

Abstract. Reactive nitrogen oxides (NOy) are a major constituent of the nitrogen deposited from the atmosphere, but observational constraints on their deposition are limited by poor or nonexistent measurement coverage in many parts of the world. Here we apply NO2 observations from multiple satellite instruments (GOME, SCIAMACHY, and GOME-2) to constrain the global deposition of NOy over the last 2 decades. We accomplish this by producing top-down estimates of NOx emissions from inverse modeling of satellite NO2 columns over 1996–2014, and including these emissions in the GEOS-Chem chemical transport model to simulate chemistry, transport, and deposition of NOy. Our estimates of long-term mean wet nitrate (NO3−) deposition are highly consistent with available measurements in North America, Europe, and East Asia combined (r =  0.83, normalized mean bias  = −7 %, N =  136). Likewise, our calculated trends in wet NO3− deposition are largely consistent with the measurements, with 129 of the 136 gridded model–data pairs sharing overlapping 95 % confidence intervals. We find that global mean NOy deposition over 1996–2014 is 56.0 Tg N yr−1, with a minimum in 2006 of 50.5 Tg N and a maximum in 2012 of 60.8 Tg N. Regional trends are large, with opposing signs in different parts of the world. Over 1996 to 2014, NOy deposition decreased by up to 60 % in eastern North America, doubled in regions of East Asia, and declined by 20 % in parts of western Europe. About 40 % of the global NOy deposition occurs over oceans, with deposition to the North Atlantic Ocean declining and deposition to the northwestern Pacific Ocean increasing. Using the residual between NOx emissions and NOy deposition over specific land regions, we investigate how NOx export via atmospheric transport has changed over the last 2 decades. Net export from the continental United States decreased substantially, from 2.9 Tg N yr−1 in 1996 to 1.5 Tg N yr−1 in 2014. Export from China more than tripled between 1996 and 2011 (from 1.0 to 3.5 Tg N yr−1), before a striking decline to 2.5 Tg N yr−1 by 2014. We find that declines in NOx export from some western European countries have counteracted increases in emissions from neighboring countries to the east. A sensitivity study indicates that simulated NOy deposition is robust to uncertainties in NH3 emissions with a few exceptions. Our novel long-term study provides timely context on the rapid redistribution of atmospheric nitrogen transport and subsequent deposition to ecosystems around the world.

scholarly journals Impacts of the Minamata Convention on Mercury Emissions and Global Deposition from Coal-Fired Power Generation in Asia

2015 ◽  
Vol 49 (9) ◽  
pp. 5326-5335 ◽  
Author(s):  
Amanda Giang ◽  
Leah C. Stokes ◽  
David G. Streets ◽  
Elizabeth S. Corbitt ◽  
Noelle E. Selin
Keyword(s):  
Power Generation ◽  
Mercury Emissions ◽  
Minamata Convention On Mercury ◽  
Global Deposition

scholarly journals CWC22-dependent pre-mRNA splicing and eIF4A3 binding enables global deposition of exon junction complexes

2015 ◽  
Vol 43 (9) ◽  
pp. 4687-4700 ◽  
Author(s):  
Anna-Lena Steckelberg ◽  
Janine Altmueller ◽  
Christoph Dieterich ◽  
Niels H. Gehring
Keyword(s):  
Mrna Splicing ◽  
Exon Junction ◽  
Global Deposition

Superrotation of the thermosphere by global deposition of meteoroids?

1975 ◽  
Vol 23 (5) ◽  
pp. 892-896 ◽  
Author(s):  
Peter W. Blum ◽  
David W. Hughes ◽  
Klaus G.H. Schuchardt
Keyword(s):  
Global Deposition
Sign in / Sign up

Export Citation Format

Share Document