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Author Bashmachnikov, I.L. ; Fedorov, A.M. ; Vesman, A.V. ; Belonenko, T.V. ; Dukhovskoy, D.S.
Title Thermohaline convection in the subpolar seas of the North Atlantic from satellite and in situ observations. Part 2: indices of intensity of deep convection Type $loc['typeJournal Article']
Year 2019 Publication Abbreviated Journal
Volume 16
Issue 1
Pages 191-201
Keywords deep convection, assimilation of satellite data, altimetry, water density, the Greenland Sea, the Labrador Sea, the Irminger Sea
Abstract Variation in locations of the maximum development of deep convection in the subpolar seas, taking into account their small dimensions, represent difficulty in identifying its interannual variability from usually sparse in situ data. In this work, the interannual variability of the maximum convection depth, is obtained using one of the most complete datasets ARMOR, which combines in situ and satellite data. The convection depths, derived from ARMOR, are used for testing the efficiency of two indices of convection intensity: (1) sea-level anomalies from satellite altimetry and (2) the integral water density in the areas of the most frequent development of deep convection. The first index, capturing some details, shows low correlations with the interannual variability of the deep convection intensity. The second index shows high correlation with the deep convection intensity in the Greenland, Irminger and Labrador seas. Asynchronous variations in the deep convection intensity in the Labrador-Irminger seas and in the Greenland Sea are obtained. In the Labrador and in the Irminger seas, the quasi-seven-year variations in the convection intensity are identified.
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Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 1089
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Author Bhardwaj, A. ; Misra, V.
Title Monitoring the Indian Summer Monsoon Evolution at the Granularity of the Indian Meteorological Sub-divisions using Remotely Sensed Rainfall Products Type $loc['typeJournal Article']
Year 2019 Publication Remote Sensing Abbreviated Journal Remote Sensing
Volume 11
Issue 9
Pages 1080
Keywords Indian Summer Monsoon ; GPM ; TRMM satellite precipitation ; meteorological sub-divisions
Abstract We make use of satellite-based rainfall products from the Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) to objectively define local onset and demise of the Indian Summer Monsoon (ISM) at the spatial resolution of the meteorological subdivisions defined by the Indian Meteorological Department (IMD). These meteorological sub-divisions are the operational spatial scales for official forecasts issued by the IMD. Therefore, there is a direct practical utility to target these spatial scales for monitoring the evolution of the ISM. We find that the diagnosis of the climatological onset and demise dates and its variations from the TMPA product is quite similar to the rain gauge based analysis of the IMD, despite the differences in the duration of the two datasets. This study shows that the onset date variations of the ISM have a significant impact on the variations of the seasonal length and seasonal rainfall anomalies in many of the meteorological sub-divisions: for example, the early or later onset of the ISM is associated with longer and wetter or shorter and drier ISM seasons, respectively. It is shown that TMPA dataset (and therefore its follow up Global Precipitation Measurement (GPM) Integrated Multi-satellite Retrievals for GPM (IMERG)) could be usefully adopted for monitoring the onset of the ISM and therefore extend its use to anticipate the potential anomalies of the seasonal length and seasonal rainfall anomalies of the ISM in many of the Indian meteorological sub-divisions. View Full-Text
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2072-4292
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 1026
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Author Zou, M. ; Xiong, X. ; Wu, Z. ; Li, S. ; Zhang, Y. ; Chen, L.
Title Increase of Atmospheric Methane Observed from Space-Borne and Ground-Based Measurements Type $loc['typeJournal Article']
Year 2019 Publication Remote Sensing Abbreviated Journal Remote Sensing
Volume 11
Issue 8
Pages
Keywords Methane increase trend ; Boundary layer ; Mid-upper troposphere ; Satellite ; AIRS
Abstract It has been found that the concentration of atmospheric methane (CH4) has rapidly increased since 2007 after a decade of nearly constant concentration in the atmosphere. As an important greenhouse gas, such an increase could enhance the threat of global warming. To better quantify this increasing trend, a novel statistic method, i.e. the Ensemble Empirical Mode Decomposition (EEMD) method, was used to analyze the CH4 trends from three different measurements: the mid-upper tropospheric CH4 (MUT) from the space-borne measurements by the Atmospheric Infrared Sounder (AIRS), the CH4 in the marine boundary layer (MBL) from NOAA ground-based in-situ measurements, and the column-averaged CH4 in the atmosphere (X-CH4) from the ground-based up-looking Fourier Transform Spectrometers at Total Carbon Column Observing Network (TCCON) and the Network for the Detection of Atmospheric Composition Change (NDACC). Comparison of the CH4 trends in the mid-upper troposphere, lower troposphere, and the column average from these three data sets shows that, overall, these trends agree well in capturing the abrupt CH4 increase in 2007 (the first peak) and an even faster increase after 2013 (the second peak) over the globe. The increased rates of CH4 in the MUT, as observed by AIRS, are overall smaller than CH4 in MBL and the column-average CH4. During 2009-2011, there was a dip in the increase rate for CH4 in MBL, and the MUT-CH4 increase rate was almost negligible in the mid-high latitude regions. The increase of the column-average CH4 also reached the minimum during 2009-2011 accordingly, suggesting that the trends of CH4 are not only impacted by the surface emission, however that they also may be impacted by other processes like transport and chemical reaction loss associated with [OH]. One advantage of the EEMD analysis is to derive the monthly rate and the results show that the frequency of the variability of CH4 increase rates in the mid-high northern latitude regions is larger than those in the tropics and southern hemisphere.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2072-4292
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 1055
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Author Wentz, F.J. ; Ricciardulli, L. ; Rodriguez, E. ; Stiles, B.W. ; Bourassa, M.A. ; Long, D.G. ; Hoffman, R.N. ; Stoffelen, A. ; Verhoef, A. ; O'Neill, L.W. ; Farrar, J.T. ; Vandemark, D. ; Fore, A.G. ; Hristova-Veleva, S.M. ; Turk, F.J. ; Gaston, R. ; Tyler, D.
Title Evaluating and Extending the Ocean Wind Climate Data Record Type $loc['typeJournal Article']
Year 2017 Publication IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Abbreviated Journal IEEE J Sel Top Appl Earth Obs Remote Sens
Volume 10
Issue 5
Pages 2165-2185
Keywords Radar cross section ; remote sensing ; satellite applications ; sea surface ; wind
Abstract Satellite microwave sensors, both active scatterometers and passive radiometers, have been systematically measuring near-surface ocean winds for nearly 40 years, establishing an important legacy in studying and monitoring weather and climate variability. As an aid to such activities, the various wind datasets are being intercalibrated and merged into consistent climate data records (CDRs). The ocean wind CDRs (OW-CDRs) are evaluated by comparisons with ocean buoys and intercomparisons among the different satellite sensors and among the different data providers. Extending the OW-CDR into the future requires exploiting all available datasets, such as OSCAT-2 scheduled to launch in July 2016. Three planned methods of calibrating the OSCAT-2 sigmao measurements include 1) direct Ku-band sigmao intercalibration to QuikSCAT and RapidScat; 2) multisensor wind speed intercalibration; and 3) calibration to stable rainforest targets. Unfortunately, RapidScat failed in August 2016 and cannot be used to directly calibrate OSCAT-2. A particular future continuity concern is the absence of scheduled new or continuation radiometer missions capable of measuring wind speed. Specialized model assimilations provide 30-year long high temporal/spatial resolution wind vector grids that composite the satellite wind information from OW-CDRs of multiple satellites viewing the Earth at different local times.
Address Jet Propulsion Laboratory, Pasadena, CA 91109 USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English
Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1939-1404
ISBN Medium
Area Expedition Conference
Funding PMID:28824741; PMCID:PMC5562405
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 68
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Author Guimond, S. R.
Title A diagnostic study of the effects of trough interactions on tropical cyclone QPF. Type $loc['typeManuscript']
Year 2007 Publication Abbreviated Journal
Volume Issue Pages
Keywords Satellites, Precipitation, Tropical Cyclones, Troughs
Abstract A composite study is presented analyzing the influence of upper-tropospheric troughs on the evolution of precipitation in twelve Atlantic tropical cyclones (TCs) between the years 2000 � 2005. The TRMM Multi-Satellite Precipitation Analysis (TMPA) is used to examine the enhancement of precipitation within a 24 h window centered on trough interaction (TI) time in a shear-vector relative coordinate system. Eddy angular momentum flux convergence (EFC) computed from European Centre for Medium-Range Weather Forecasts (ECMWF) operational analyses is employed to objectively determine the initiation of a TI while adding insight, along with vertical wind shear, into the intensification of TC vortices. The relative roles of the dynamics (EFC and vertical wind shear) and thermodynamics (moist static energy potential) in TIs are outlined in the context of precipitation enhancement that provides quantitative insight into the “good trough”/“bad trough” paradigm. The largest precipitation rates and enhancements are found in the down-shear left quadrant of the storm, consistent with previous studies of convective asymmetries. Maximum mean enhancement values of 1.4 mm/h are found at the 200 km radius in the down-shear left quadrant. Results indicate that the largest precipitation enhancements occur with “medium” TIs; comprised of EFC values between 17 � 22 (m/s)/day and vertical wind shear Sensitivity tests on the upper vertical wind shear boundary reveal the importance of using the tropopause for wind shear computations when a TC enters mid-latitude regions. Changes in radial mean precipitation ranging from 29 � 40 % across all storm quadrants are found when using the tropopause as the upper boundary on the shear vector. Tests on the lower boundary using QuikSCAT ocean surface wind vectors expose large sensitivities on the precipitation ranging from 42 � 60 % indicating that the standard level of 850 hPa, outside of the boundary layer in most storms, is more physically reliable for computing vertical wind shear. These results should help to improve TC quantitative precipitation forecasting (QPF) as operational forecasters routinely rely on crude statistical methods and rules of thumb for forecasting TC precipitation.
Address Department of Meteorology
Corporate Author Thesis $loc['Master's thesis']
Publisher Florida State University
Place of Publication Tallahassee, FL
Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding NASA, OVWST
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 610
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Author Scott, JP
Title An Intercomparison of Numerically Modeled Flux Data and Satellite-Derived Flux Data for Warm Seclusions Type $loc['typeManuscript']
Year 2011 Publication Abbreviated Journal
Volume Issue Pages
Keywords Satellite ; Reanalysis ; Air Sea Interaction ; Turbulent Heat Fluxes ; Intercomparison ; Warm Seclusion
Abstract
Address
Corporate Author Thesis $loc['Master's thesis']
Publisher Florida State University
Place of Publication Tallahassee, FL
Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 335
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Author Hiester, H.R. ; Morey, S.L. ; Dukhovskoy, D.S. ; Chassignet, E.P. ; Kourafalou, V.H. ; Hu, C.
Title A topological approach for quantitative comparisons of ocean model fields to satellite ocean color data Type $loc['typeJournal Article']
Year 2016 Publication Methods in Oceanography Abbreviated Journal Methods in Oceanography
Volume 17
Issue Pages 232-250
Keywords Satellite data ; Ocean model ; Ocean color ; Sea surface salinity ; Shape comparison ; Hausdorff distance
Abstract
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2211-1220
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 78
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Author Dukhovskoy, D.S. ; Leben, R.R. ; Chassignet, E.P. ; Hall, C.A. ; Morey, S.L. ; Nedbor-Gross, R.
Title Characterization of the uncertainty of loop current metrics using a multidecadal numerical simulation and altimeter observations Type $loc['typeJournal Article']
Year 2015 Publication Deep Sea Research Part I: Oceanographic Research Papers Abbreviated Journal Deep Sea Research Part I: Oceanographic Research Papers
Volume 100
Issue Pages 140-158
Keywords Eddies and mesoscale processes ; Gulf of Mexico ; Loop Current ; Satellite altimetry ; Ocean modeling ; Ocean front detection
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0967-0637
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 100
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Author Bourassa, M.A. ; McBeth Ford, K.
Title Uncertainty in Scatterometer-Derived Vorticity Type $loc['typeJournal Article']
Year 2010 Publication Journal of Atmospheric and Oceanic Technology Abbreviated Journal J. Atmos. Oceanic Technol.
Volume 27
Issue 3
Pages 594-603
Keywords Satellite observations ; Wind ; Instrumentation/sensors
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0739-0572
ISBN Medium
Area Expedition Conference
Funding OVWST
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 365
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Author Perrie, W. ; Zhang, W. ; Bourassa, M. ; Shen, H. ; Vachon, P.W.
Title Impact of Satellite Winds on Marine Wind Simulations Type $loc['typeJournal Article']
Year 2008 Publication Weather and Forecasting Abbreviated Journal Wea. Forecasting
Volume 23
Issue 2
Pages 290-303
Keywords Satellite observations ; Data assimilation ; Hurricanes ; Waves, oceanic ; Ocean modeling ; Numerical analysis
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0882-8156
ISBN Medium
Area Expedition Conference
Funding NASA, OVWST
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 680
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