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'Terminators' on the sun trigger plasma tsunamis, start of new solar cycles（图）
'Terminators' on sun trigger plasma tsunamis new solar cycles
2019/10/22
In a pair of new papers, scientists paint a picture of how solar cycles suddenly die, potentially causing tsunamis of plasma to race through the sun's interior and trigger the birth of the next sunspo...
CORRECTION OF THE TEMPERATURE EFFECT IN 1020 NM BAND OF SUN-SKY RADIOMETER
Temperature Correction, 1020 nm Band, Radiometer
2018/5/14
Aerosol is an important part of the earth-atmosphere system. It can directly and indirectly influence solar radiation and then affect the energy balance of earth-atmosphere system. AERONET, as the lar...
Oldest Measurement of Earth's Magnetic Field Reveals Battle Between Sun and Earth for Our Atmosphere（图）
Sun and Earth Our Atmosphere Earth's Magnetic Field
2010/3/23
Scientists at the University of Rochester have discovered that the Earth's magnetic field 3.5 billion years ago was only half as strong as it is today, and that this weakness, coupled with a strong wi...
Aerosol characterization in Northern Africa, Northeastern Atlantic, Mediterranean Basin and Middle East from direct-sun AERONET observations
Aerosol characterization Northern Africa Northeastern Atlantic Mediterranean Basin Middle East direct-sun AERONET observations
2009/11/19
We provide an atmospheric aerosol characterization for North Africa, Northeastern Atlantic, Mediterranean and Middle East based on the analysis of quality-assured direct-sun observations of 39 station...
Divergence of sun-rays by atmospheric refraction at large solar zenith angles
sun-rays atmospheric refraction large solar zenith angles
2009/3/4
For the determination of photolysis rates at large zenith angles it has been demonstrated that refraction by the earth's atmosphere must be taken into account. In fact, due to the modified optical pat...
Retrieval of ozone column content from airborne Sun photometer measurements during SOLVE II: comparison with coincident satellite and aircraft measurements
ozone column content airborne Sun photometer measurement satellite aircraft
2009/2/13
During the 2003 SAGE (Stratospheric Aerosol and Gas Experiment) III Ozone Loss and Validation Experiment (SOLVE) II, the fourteen-channel NASA Ames Airborne Tracking Sunphotometer (AATS-14) was mounte...
Aerosol optical depth measurements by airborne sun photometer in SOLVE II: Comparisons to SAGE III, POAM III and airborne spectrometer measurements
Aerosol optical depth measurements airborne sun photometer SAGE III POAM III
2009/2/10
The 14-channel NASA Ames Airborne Tracking Sunphotometer (AATS-14) measured solar- beam transmission on the NASA DC-8 during the second SAGE III Ozone Loss and Validation Experiment (SOLVE II). This p...
Inter-comparison of stratospheric O3 and NO2 abundances retrieved from balloon borne direct sun observations and Envisat/SCIAMACHY limb measurements
stratospheric O3 NO2 balloon borne Envisat/SCIAMACHY limb measurements
2009/1/6
Stratospheric O3 and NO2 abundances measured by different remote sensing instruments are inter-compared: (1) Line-of-sight absorptions and vertical profiles inferred from solar spectra in the ultra-v...
Technical Note: Improved total atmospheric water vapour amount determination from near-infrared filter measurements with sun photometers
atmospheric water vapour near-infrared filter measurements sun photometer
2008/12/18
In this work we explore the effect of the contribution of the solar spectrum to the recorded signal in wavelengths outside the typical 940-nm filter's bandwidth. We employ gaussian-shaped filters as w...
Classification of aerosol properties derived from AERONET direct sun data
aerosol properties AERONET sun
2008/11/28
Aerosol spectral measurements by sunphotometers can be characterized by three independent pieces of information: 1) the optical thickness (AOT), a measure of the column aerosol concentration, 2) the o...