A5000481894- Atmospheric Ozone and Climate
- Ionosphere and magnetosphere dynamics
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Solar and Space Plasma Dynamics
- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Planetary Science and Exploration
- Astro and Planetary Science
- Geophysics and Gravity Measurements
- Climate variability and models
- Spacecraft Design and Technology
- Air Quality Monitoring and Forecasting
- Spectroscopy and Laser Applications
- Calibration and Measurement Techniques
- Earthquake Detection and Analysis
- Aerospace Engineering and Energy Systems
- Spacecraft Dynamics and Control
- Urban Heat Island Mitigation
- Methane Hydrates and Related Phenomena
- Building Energy and Comfort Optimization
- GNSS positioning and interference
- COVID-19 impact on air quality
- Oceanographic and Atmospheric Processes
- Soil Moisture and Remote Sensing
Universidade Federal da Paraíba
2021-2023
Wallops Flight Facility
2001-2012
Goddard Space Flight Center
1997-2010
NOAA National Weather Service
1975
Since 1996, quality assurance experiments of electrochemical concentration cell (ECC) ozonesondes two different model types (SPC‐6A and ENSCI‐Z) have been conducted in the environmental simulation facility at Research Centre Juelich within framework Ozone Sonde Intercomparison Experiment (JOSIE). The shown that performance characteristics ECC‐sonde can be significantly different, even when operated under same conditions. Particularly above 20 km ENSCI‐Z sonde tends to measure 5–10% more...
We present validation studies of MLS version 2.2 upper tropospheric and stratospheric ozone profiles using ozonesonde lidar data as well climatological data. Ozone measurements from over 60 stations worldwide three are compared with coincident The between 150 3 hPa agree measurements, within 8% for the global average. values at 215 biased high to ozonesondes by ∼20% middle latitude, although there is a lot variability in this altitude region. Comparisons ground‐based Mauna Loa, Hawaii, Table...
The Southern Hemisphere Additional Ozonesondes (SHADOZ) project has collected more than 3000 ozone profiles from 14 tropical and subtropical sites using balloon‐borne electrochemical concentration cell (ECC) ozonesondes flown with standard radiosondes. Published analysis of ozonesonde precision SHADOZ measured in 1998–2000 revealed that variations technique might cause small station‐to‐station biases the total measurement. We present further evaluation imprecisions accuracy based on...
Using a set of selected surface ozone (nine stations) and vertical profile measurements (from six stations), we have documented changes in tropospheric at number locations. From two stations high northern hemisphere (NH) latitudes there has been significant decline amounts throughout the troposphere since early 1980s. At midlatitudes NH where data are most abundant, on other hand, important regional differences prevail. The eastern United States show that concentrations 1970s relatively...
The most extensive set of free tropospheric ozone measurements ever compiled across midlatitude North America was measured with daily ozonesondes, commercial aircraft and a lidar at 14 sites during July‐August 2004. model estimated stratospheric subtracted from all profiles, leaving residual ozone. On average the upper troposphere above eastern contained 15 ppbv more than polluted layer between surface 2 km sea level. Lowest values in were found two upwind California. 16 three sites,...
We estimate the tropospheric column ozone using a forward trajectory model to increase horizontal resolution of Aura Microwave Limb Sounder (MLS) derived stratospheric ozone. Subtracting MLS from Ozone Monitoring Instrument total measurements gives enhanced residual (TTOR). Because different tropopause definitions, we validate basic technique by computing 200‐hPa‐to‐surface and comparing it same product ozonesondes Tropospheric Emission Spectrometer measurements. Comparisons show good...
Daily ozone soundings taken from the R/V Ronald H. Brown 7 July through 11 August 2004 as part of Intercontinental Chemical Transport Experiment (INTEX) Ozonesonde Network Study (IONS) are used to investigate vertical structure over Gulf Maine and characterize variability in sources tropospheric ozone: stratosphere, regional convection lightning, advection, local boundary layer pollution. These were a network twelve IONS ( http://croc.gsfc.nasa.gov/intex/ions.html ) stations that launched...
Coordinated ozonesonde launches from the Intercontinental Transport Experiment (INTEX) Ozonesonde Network Study (IONS) (http://croc.gsfc.nasa.gov/intex/ions.html) in July‐August 2004 provided nearly 300 O 3 profiles eleven North American sites and R/V Ronald H. Brown Gulf of Maine. With IONS period dominated by low‐pressure conditions over northeastern America (NENA), free troposphere that region was frequently enriched stratospheric . Stratospheric contributions to NENA tropospheric budget...
We present a regional and seasonal climatology of SHADOZ ozone profiles in the troposphere tropical tropopause layer (TTL) based on measurements taken during first five years Aura, 2005–2009, when new stations joined network at Hanoi, Vietnam; Hilo, Hawaii; Alajuela/Heredia, Costa Rica; Cotonou, Benin. In all, 15 operated that period. A west‐to‐east progression decreasing convective influence increasing pollution leads to distinct tropospheric three regions: (1) western Pacific/eastern...
Retrievals from the Microwave Limb Sounder (MLS) and Ozone Monitoring Instrument (OMI) on EOS‐Aura were included in Goddard Earth Observing System version 4 (GEOS‐4) ozone data assimilation system. The distribution daily to seasonal evolution of stratosphere troposphere during 2005 are investigated. In lower stratosphere, where dynamical processes dominate, comparisons with independent ozonesonde Measurement Water Vapour by Airbus In‐Service Aircraft (MOZAIC) indicate mean agreement within...
Abstract During 9 March–9 April 2004, the North Slope of Alaska Arctic Winter Radiometric Experiment was conducted at Atmospheric Radiation Measurement Program’s (ARM) “Great White” field site near Barrow, Alaska. The major goals experiment were to compare microwave and millimeter wavelength radiometers develop forward models in radiative transfer, all with a focus on cold (temperature from 0° −40°C) dry [precipitable water vapor (PWV) < 0.5 cm] conditions. To supplement remote...
We present measurements of extremely large gradients temperature and zonal wind near the arctic summer mesopause obtained with sodium lidar falling spheres during MaCWAVE/MIDAS rocket ground‐based measurement campaign performed at Andøya Rocket Range (ARR) ALOMAR observatory (69.3°N, 16.0°E) in July 2002. The appear to result from strong gravity wave forcing mesopause, vertical scale compression amplitude increases accompanying increasing stratification decreasing intrinsic phase speeds,...
During July and August, 2004, balloon‐borne ozonesondes were released daily at 12 sites in the eastern USA Canada, producing largest single set of free tropospheric ozone measurements ever compiled for this region. At same time, a number air quality forecast models run as part larger field experiment. In paper, we compare these ozonesonde profiles with predicted from several versions two models, Environment Canada CHRONOS AURAMS models. We find that show considerable skill predicting...
Daily maps of horizontally resolved zonal and meridional geostrophic wind fields in the altitude range 20–90 km were obtained from Cryogenic Infrared Spectrometers Telescopes for Atmosphere (CRISTA) experiment during November 1994 August 1997. Results are compared with mean winds climatological sources assimilated data standard analyses. Correlative ground‐based balloon‐ rocket‐borne measurements used to validate CRISTA winds. The comparisons show that high spatial resolution satellite‐borne...
DROPPS (The D istribution and R ole of P articles in the olar S ummer M esosphere) was a highly coordinated international study conducted July, 1999 from Norwegian rocket range (Andøya, Norway). Two sequences rockets were launched. Each included one NASA payload, containing instruments to measure electrodynamic optical properties dust/aerosol layers, accompanied by European payloads (MIDAS, Mini‐MIDAS, and/or Mini‐DUSTY) same structures complementary manner. Meteorological provided winds...
We report simultaneous measurements of the O 2 (¹Δ) and (¹Σ) airglow volume emission rate profiles in daytime mesosphere. use these to derive ozone concentrations separately from each airglow. The were made as part Mesosphere‐Thermosphere Emissions for Ozone Remote Sensing (METEORS) sounding rocket project launched White Sands Missile Range, New Mexico. These data offer opportunity assess consistency derived oxygen airglows thus provide a fundamental test our understanding dayglow physics...
Abstract. MaCWAVE (Mountain and Convective Waves Ascending VErtically) was a highly coordinated rocket, ground-based, satellite program designed to address gravity wave forcing of the mesosphere lower thermosphere (MLT). The conducted at Norwegian Andøya Rocket Range (ARR, 69.3° N) in July 2002, continued Swedish (Esrange, 67.9° during January 2003. Correlative instrumentation included ALOMAR MF MST radars RMR Na lidars, Esrange meteor lidar, radiosondes, TIMED (Thermosphere Ionosphere...
Abstract. Falling sphere and balloon wind temperature data from the MaCWAVE winter campaign, which was conducted in northern Scandinavia during January 2003, are analyzed to investigate gravity wave characteristics stratosphere mesosphere. There were two stratospheric warming events occurring one having a maximum perturbation at ~45 km 17–19 January, other ~30 24–27 January. The former major event, whereas latter minor one. Both warmings accompanied by upper mesospheric coolings, second...
Wind fields in the mesosphere and lower thermosphere are obtained with High Resolution Doppler Imager (HRDI) on Upper Atmosphere Research Satellite (UARS) by observing shifts of emission lines O 2 Atmospheric band. The validity measured winds depends an accurate knowledge positions detector observed absence a wind induced shift. These have been determined to accuracy approximately 5 ms −1 from comparison HRDI those MF radars. Excellent agreement is found between radars rockets. In addition,...
Falling sphere measurements were part of a study to investigate the relationship between Noctilucent Clouds and Polar Mesospheric Summer Echoes within context interactions ionized neutral atmosphere. During this investigation there was one measurement very low mesopause temperature. This temperature is believed be lowest value ever observed in terrestrial environment. The reasons why cold considered valid are presented.