scholarly journals Intra‐ and inter‐annual variability of nitrification in the rhizosphere of field‐grown bioenergy sorghum

GCB Bioenergy ◽  
2022 ◽  
Author(s):  
Mark B. Burnham ◽  
Sandra J. Simon ◽  
DoKyoung Lee ◽  
Angela D. Kent ◽  
Evan H. DeLucia ◽  
...  
Keyword(s):  
Annual Variability

scholarly journals Variability of springtime transpacific pollution transport during 2000–2006: the INTEX-B mission in the context of previous years

2010 ◽  
Vol 10 (3) ◽  
pp. 1345-1359 ◽  
Author(s):  
G. G. Pfister ◽  
L. K. Emmons ◽  
D. P. Edwards ◽  
A. Arellano ◽  
T. Campos ◽  
...  
Keyword(s):  
Transport Model ◽  
Pollution Transport ◽  
Chemistry Transport Model ◽  
Pollution Levels ◽  
Annual Variability ◽  
Source Regions ◽  
Time Period ◽  
The Pacific ◽  
The Us ◽  
Transport Experiment

Abstract. We analyze the transport of pollution across the Pacific during the NASA INTEX-B (Intercontinental Chemical Transport Experiment Part B) campaign in spring 2006 and examine how this year compares to the time period for 2000 through 2006. In addition to aircraft measurements of carbon monoxide (CO) collected during INTEX-B, we include in this study multi-year satellite retrievals of CO from the Measurements of Pollution in the Troposphere (MOPITT) instrument and simulations from the chemistry transport model MOZART-4. Model tracers are used to examine the contributions of different source regions and source types to pollution levels over the Pacific. Additional modeling studies are performed to separate the impacts of inter-annual variability in meteorology and dynamics from changes in source strength. Interannual variability in the tropospheric CO burden over the Pacific and the US as estimated from the MOPITT data range up to 7% and a somewhat smaller estimate (5%) is derived from the model. When keeping the emissions in the model constant between years, the year-to-year changes are reduced (2%), but show that in addition to changes in emissions, variable meteorological conditions also impact transpacific pollution transport. We estimate that about 1/3 of the variability in the tropospheric CO loading over the contiguous US is explained by changes in emissions and about 2/3 by changes in meteorology and transport. Biomass burning sources are found to be a larger driver for inter-annual variability in the CO loading compared to fossil and biofuel sources or photochemical CO production even though their absolute contributions are smaller. Source contribution analysis shows that the aircraft sampling during INTEX-B was fairly representative of the larger scale region, but with a slight bias towards higher influence from Asian contributions.

scholarly journals Intra-Annual Variability of the Radiocarbon Content of Corals from the Galapagos Islands

Radiocarbon ◽  
1993 ◽  
Vol 35 (2) ◽  
pp. 245-251 ◽  
Author(s):  
T. A. Brown ◽  
G. W. Farwell ◽  
P. M. Grootes ◽  
F. H. Schmidt ◽  
Minze Stuiver
Keyword(s):  
Southern Oscillation ◽  
Galapagos Islands ◽  
Ocean Current ◽  
Galápagos Islands ◽  
Ocean Water ◽  
Annual Variations ◽  
Surface Ocean ◽  
Annual Variability ◽  
Annual Changes ◽  
Detailed Record

We report AMS 14C measurements on subannual samples of coral from the Galapagos Islands that span the period, 1970–1973. Both the major 1972 El Niño/Southern Oscillation event and intra-annual changes in regional upwelling of 14C-depleted waters associated with alternation of surface-ocean current patterns are evident in the record. Our data show that the corals preserve a detailed record of past intra-annual variations of the 14C content of surface ocean water.

scholarly journals Intra-annual variability of satellite observed surface albedo associated with typical land cover types in China

2014 ◽  
Vol 25 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Zhengjia Liu ◽  
Quanqin Shao ◽  
Jian Tao ◽  
Wenfeng Chi
Keyword(s):  
Land Cover ◽  
Surface Albedo ◽  
Land Cover Types ◽  
Annual Variability

Life cycle of the jellyfish Rhizostoma pulmo (Scyphozoa: Rhizostomeae) and its distribution, seasonality and inter-annual variability along the Catalan coast and the Mar Menor (Spain, NW Mediterranean)

2011 ◽  
Vol 158 (10) ◽  
pp. 2247-2266 ◽  
Author(s):  
Verónica Fuentes ◽  
Ilka Straehler-Pohl ◽  
Dacha Atienza ◽  
Ignacio Franco ◽  
Uxue Tilves ◽  
...  
Keyword(s):  
Life Cycle ◽  
Annual Variability ◽  
Catalan Coast ◽  
Mar Menor ◽  
Nw Mediterranean

scholarly journals Inter-annual Variability of Soil Respiration in Wet Shrublands: Do Plants Modulate Its Sensitivity to Climate?

Ecosystems ◽  
2016 ◽  
Vol 20 (4) ◽  
pp. 796-812 ◽  
Author(s):  
María T. Domínguez ◽  
Andrew R. Smith ◽  
Sabine Reinsch ◽  
Bridget A. Emmett
Keyword(s):  
Soil Respiration ◽  
Annual Variability
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