Various nonatmospheric signals contaminate radar wind profiler data, introducing bias into the moments and wind velocity estimation. This study applies a fuzzy logic-based method to Doppler velocity spectra to identify and eliminate the clutter echoes. This method uses mathematical analyses and a fuzzy inference system applied to each Doppler velocity spectrum to separate the atmospheric signals from the clutter. After eliminating the clutter, an adaptive algorithm is used to estimate mean Doppler velocities accurately. This combination of techniques is applied to the spectral data obtained by the newly developed 53-MHz active phased array radar located at the National Atmospheric Research Laboratory (NARL), Gadanki, India (13.5 degrees N, 79 degrees E). Winds derived using the conventional method and the method developed for this study are compared with those obtained by collocated GPS radiosonde. The comparison shows that the present method derives the winds more accurately compared to the conventional method.
Lundquist, J. D.; Hughes, M.; Henn, B.; Gutmann, E. D.; Livneh, B.; Dozier, J.; Neiman, P.;
Published Date:
2015
Source:
Journal of Hydrometeorology, 16(4), 1773-1792.
Description:
Gridded spatiotemporal maps of precipitation are essential for hydrometeorological and ecological analyses. In the United States, most of these datasets are developed using the Cooperative Observer (COOP) network of ground-based precipitation measure...
Moore, B. J.; Mahoney, K. M.; Sukovich, E. M.; Cifelli, R.; Hamill, T. M.;
Published Date:
2015
Source:
Monthly Weather Review, 143(3), 718-741.
Description:
This paper documents the characteristics of extreme precipitation events (EPEs) in the southeastern United States (SEUS) during 2002-11. The EPEs are identified by applying an object-based method to 24-h precipitation analyses from the NCEP stage-IV ...
Li, Y. N.; Peng, S. Q.; Wang, J.; Yan, J.; Huang, H.;
Published Date:
2018
Source:
Journal of Geophysical Research-Oceans, 123(11), 8247-8263.
Description:
The generation and interannual variations of the upwellings west and southwest off the Hainan Island (hereafter denoted as UWHI and USWHI, respectively) detected from satellite-derived sea surface temperature as well as the mechanism behind them are ...
Lossow, S.; Khosrawi, F.; Nedoluha, G. E.; Azam, F.; Bramstedt, K.; Burrows, J. P.; Dinelli, B. M.; Eriksson, P.; Espy, P. J.; Garcia-Comas, M.; Gille, J. C.; Kiefer, M.; Noel, S.; Raspollini, P.; Read, W. G.; Rosenlof, K. H.; Rozanov, A.; Sioris, C. E.; Stiller, G. P.; Walker, K. A.; Weigel, K.;
In the framework of the second SPARC (Stratosphere-troposphere Processes And their Role in Climate) water vapour assessment (WAVAS-II), the amplitudes and phases of the annual, semi-annual and quasi-biennial variation in stratospheric and lower mesos...
Tkacik, D. S.; Robinson, E. S.; Ahern, A.; Saleh, R.; Stockwell, C.; Veres, P.; Simpson, I. J.; Meinardi, S.; Blake, D. R.; Yokelson, R. J.; Presto, A. A.; Sullivan, R. C.; Donahue, N. M.; Robinson, A. L.;
Published Date:
2017
Source:
Journal of Geophysical Research-Atmospheres, 122(11), 6043-6058.
Description:
Biomass burning (BB) is a major source of atmospheric pollutants. Field and laboratory studies indicate that secondary organic aerosol (SOA) formation from BB emissions is highly variable. We investigated sources of this variability using a novel dua...
Tsuruta, A.; Aalto, T.; Backman, L.; Hakkarainen, J.; van der Laan-Luijkx, I. T.; Krol, M. C.; Spahni, R.; Houweling, S.; Laine, M.; Dlugokencky, E.; Gomez-Pelaez, A. J.; van der Schoot, M.; Langenfelds, R.; Ellul, R.; Arduini, J.; Apadula, F.; Gerbig, C.; Feist, D. G.; Kivi, R.; Yoshida, Y.; Peters, W.;
Published Date:
2017
Source:
Geoscientific Model Development, 10(3), 29.
Description:
We present a global distribution of surface methane (CH4) emission estimates for 2000-2012 derived using the CarbonTracker Europe-CH4 (CTE-CH4) data assimilation system. In CTE-CH4, anthropogenic and biospheric CH4 emissions are simultaneously estima...
We have developed a method to calculate the fractional distribution of CO2 across all of its component isotopologues based on measured delta C-13 and delta O-18 values. The fractional distribution can be used with known total CO2 to calculate the amo...
AbstractTropical cyclone (TC)–trough interactions are a common occurrence in the North Atlantic basin and lead to a variety of TC intensity changes, from rapid intensification (RI) to rapid weakening. To test whether certain TC–trough configurati...
Kuang, S.; Newchurch, M. J.; Thompson, A. M.; Stauffer, R. M.; Johnson, B. J.; Wang, L. H.;
Published Date:
2017
Source:
Journal of Geophysical Research-Atmospheres, 122(20), 11227-11241.
Description:
Tropospheric ozone variability occurs because of multiple forcing factors including surface emission of ozone precursors, stratosphere-to-troposphere transport (STT), and meteorological conditions. Analyses of ozonesonde observations made in Huntsvil...
White, A. B.; Neiman, P. J.; Creamean, J. M.; Coleman, T.; Ralph, F. M.; Prather, K. A.;
Published Date:
2015
Source:
Journal of Hydrometeorology, 16(3), 1048-1069.
Description:
Atmospheric rivers (ARs) are narrow regions of enhanced water vapor transport, usually found on the warm-sector side of the polar cold front in many midlatitude storms formed primarily over the oceans. Nonbrightband (NBB) rain is a shallow orographic...
Tjernstrom, M.; Shupe, M. D.; Brooks, I. M.; Persson, P. O. G.; Prytherch, J.; Salisbury, D. J.; Sedlar, J.; Achtert, P.; Brooks, B. J.; Johnston, P. E.; Sotiropoulou, G.; Wolfe, D.;
Published Date:
2015
Source:
Geophysical Research Letters, 42(13), 5594-5602.
Description:
Direct observations during intense warm-air advection over the East Siberian Sea reveal a period of rapid sea-ice melt. A semistationary, high-pressure system north of the Bering Strait forced northward advection of warm, moist air from the continent...
Meinshausen, M.; Vogel, E.; Nauels, A.; Lorbacher, K.; Meinshausen, N.; Etheridge, D. M.; Fraser, P. J.; Montzka, S. A.; Rayner, P. J.; Trudinger, C. M.; Krummel, P. B.; Beyerle, U.; Canadell, J. G.; Daniel, J. S.; Enting, I. G.; Law, R. M.; Lunder, C. R.; O'Doherty, S.; Prinn, R. G.; Reimann, S.; Rubino, M.; Velders, G. J. M.; Vollmer, M. K.; Wang, R. H. J.; Weiss, R.;
Published Date:
2017
Source:
Geoscientific Model Development, 10(5), 2057-2116.
Description:
Atmospheric greenhouse gas (GHG) concentrations are at unprecedented, record-high levels compared to the last 800 000 years. Those elevated GHG concentrations warm the planet and - partially offset by net cooling effects by aerosols - are largely res...
Saunois, M.; Bousquet, P.; Poulter, B.; Peregon, A.; Ciais, P.; Canadell, J. G.; Dlugokencky, E. J.; Etiope, G.; Bastviken, D.; Houweling, S.; Janssens-Maenhout, G.; Tubiello, F. N.; Castaldi, S.; Jackson, R. B.; Alexe, M.; Arora, V. K.; Beerling, D. J.; Bergamaschi, P.; Blake, D. R.; Brailsford, G.; Bruhwiler, L.; Crevoisier, C.; Crill, P.; Covey, K.; Frankenberg, C.; Gedney, N.; Hoglund-Isaksson, L.; Ishizawa, M.; Ito, A.; Joos, F.; Kim, H. S.; Kleinen, T.; Krummel, P.; Lamarque, J. F.; Langenfelds, R.; Locatelli, R.; Machida, T.; Maksyutov, S.; Melton, J. R.; Morino, I.; Naik, V.; O'Doherty, S.; Parmentier, F. J.; Patra, P. K.; Peng, C. H.; Peng, S. S.; Peters, G. P.; Pison, I.; Prinn, R.; Ramonet, M.; Riley, W. J.; Saito, M.; Santini, M.; Schroeder, R.; Simpson, I. J.; Spahni, R.; Takizawa, A.; Thornton, B. F.; Tian, H. Q.; Tohjima, Y.; Viovy, N.; Voulgarakis, A.; Weiss, R.; Wilton, D. J.; Wiltshire, A.; Worthy, D.; Wunch, D.; Xu, X. Y.; Yoshida, Y.; Zhang, B. W.; Zhang, Z.; Zhu, Q. A.;
Published Date:
2017
Source:
Atmospheric Chemistry and Physics, 17(18), 11135-11161.
Description:
Following the recent Global Carbon Project (GCP) synthesis of the decadal methane (CH4) budget over 2000-2012 (Saunois et al., 2016), we analyse here the same dataset with a focus on quasi-decadal and inter-annual variability in CH4 emissions. The GC...
Huang, G. Y.; Liu, X.; Chance, K.; Yang, K.; Bhartia, P. K.; Cai, Z. N.; Allaart, M.; Ancellet, G.; Calpini, B.; Coetzee, G. J. R.; Cuevas-Agullo, E.; Cupeiro, M.; De Backer, H.; Dubey, M. K.; Fuelberg, H. E.; Fujiwara, M.; Godin-Beekmann, S.; Hall, T. J.; Johnson, B.; Joseph, E.; Kivi, R.; Kois, B.; Komala, N.; Konig-Langlo, G.; Laneve, G.; Leblanc, T.; Marchand, M.; Minschwaner, K. R.; Morris, G.; Newchurch, M. J.; Ogino, S. Y.; Ohkawara, N.; Piters, A. J. M.; Posny, F.; Querel, R.; Scheele, R.; Schmidlin, F. J.; Schnell, R. C.; Schrems, O.; Selkirk, H.; Shiotani, M.; Skrivankova, P.; Sutbi, R.; Taha, G.; Tarasick, D. W.; Thompson, A. M.; Thouret, V.; Tully, M. B.; Van Malderen, R.; Vomel, H.; von der Gathen, P.; Witte, J. C.; Yela, M.;
Published Date:
2017
Source:
Atmospheric Measurement Techniques, 10(7), 21.
Description:
We validate the Ozone Monitoring Instrument (OMI) Ozone Profile (PROFOZ) product from October 2004 through December 2014 retrieved by the Smithsonian Astrophysical Observatory (SAO) algorithm against ozonesonde observations. We also evaluate the effe...
Journal of Advances in Modeling Earth Systems, 7(2), 938-962.
Description:
This paper describes a general method for the treatment of convective momentum transport (CMT) in large-scale dynamical solvers that use a cyclic, two-dimensional (2-D) cloud-resolving model (CRM) as a "superparameterization'' of convective-system-sc...
Hettiyadura, A. P. S.; Jayarathne, T.; Baumann, K.; Goldstein, A. H.; de Gouw, J. A.; Koss, A.; Keutsch, F. N.; Skog, K.; Stone, E. A.;
Published Date:
2017
Source:
Atmospheric Chemistry and Physics, 17(2), 1343-1359.
Description:
Organosulfates are components of secondary organic aerosols (SOA) that form from oxidation of volatile organic compounds (VOCs) in the presence of sulfate. In this study, the composition and abundance of organosulfates were determined in fine particu...
Moreira, D. S.; Longo, K. M.; Freitas, S. R.; Yamasoe, M. A.; Mercado, L. M.; Rosario, N. E.; Gloor, E.; Viana, R. S. M.; Miller, J. B.; Gatti, L. V.; Wiedemann, K. T.; Domingues, L. K. G.; Correia, C. C. S.;
Published Date:
2017
Source:
Atmospheric Chemistry and Physics, 17(23), 14785-14810.
Description:
Every year, a dense smoke haze covers a large portion of South America originating from fires in the Amazon Basin and central parts of Brazil during the dry biomass burning season between August and October. Over a large portion of South America, the...
Wanninkhof, R.; Triñanes, J.; Park, G.-H.; Gledhill, D.; Olsen, A.;
Published Date:
2019
Source:
Journal of Geophysical Research: Oceans, 124(10), 6960-6982.
Description:
Abstract Sixteen years of surface water CO2 data from autonomous systems on cruise ships sailing in the Caribbean Sea and Western North Atlantic show marked changes on interannual timescales. The measured changes in fugacity (≈partial pressure) of ...
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