Now showing items 1-10 of 170
Role of carbon cycle observations and knowledge in carbon management
(Annual Reviews, 2003-08-14)
Agriculture and industrial development have led to inadvertent changes in the natural carbon cycle. As a consequence, concentrations of carbon dioxide and other greenhouse gases have increased in the atmosphere and may ...
Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009
(Copernicus Publications on behalf of the European Geosciences Union, 2013-06-19)
The Southern Ocean (44–75° S) plays a critical role in the global carbon cycle, yet remains one of the most poorly sampled ocean regions. Different approaches have been used to estimate sea–air CO2 fluxes in this region: ...
Research frontiers in the analysis of coupled biogeochemical cycles
(Ecological Society of America, 2011-02)
The analysis of coupled biogeochemical cycles (CBCs) addresses the scientific basis for some of today's major environmental problems. Drawing from information presented at a series of sessions on CBCs held at the 2009 ...
Atmospheric carbon dioxide variability in the Community Earth System Model : evaluation and transient dynamics during the twentieth and twenty-first centuries
(American Meteorological Society, 2013-07-01)
Changes in atmospheric CO2 variability during the twenty-first century may provide insight about ecosystem responses to climate change and have implications for the design of carbon monitoring programs. This paper describes ...
Climate forcing for dynamics of dissolved inorganic nutrients at Palmer Station, Antarctica : an interdecadal (1993–2013) analysis
(John Wiley & Sons, 2016-09-17)
We analyzed 20 years (1993–2013) of observations of dissolved inorganic macronutrients (nitrate, N; phosphate, P; and silicate, Si) and chlorophyll a (Chl) at Palmer Station, Antarctica (64.8°S, 64.1°W) to elucidate how ...
Oceanography : plankton in a warmer world
Satellite data show that phytoplankton biomass and growth generally decline as the oceans’ surface waters warm up. Is this trend, seen over the past decade, a harbinger of the future for marine ecosystems?
Comment on “Modern-age buildup of CO2 and its effects on seawater acidity and salinity” by Hugo A. Loáiciga
(American Geophysical Union, 2007-09-25)
Moist synoptic transport of CO2 along the mid-latitude storm track
(American Geophysical Union, 2011-05-12)
Atmospheric mixing ratios of CO2 are strongly seasonal in the Arctic due to mid-latitude transport. Here we analyze the seasonal influence of moist synoptic storms by diagnosing CO2 transport from a global model on moist ...
Sea surface temperature and salinity variability at Bermuda during the end of the Little Ice Age
(American Geophysical Union, 2008-07-09)
We use geochemical and isotope measurements on a 225-year old brain coral (Diploria labyrinthiformis) from the south shore of Bermuda (64°W, 32°N) to construct a record of decadal-to-centennial-scale climate variability. ...
The subtropical nutrient spiral
(American Geophysical Union, 2003-12-04)
We present an extended series of observations and more comprehensive analysis of a tracer-based measure of new production in the Sargasso Sea near Bermuda using the 3He flux gauge technique. The estimated annually averaged ...