Background simulations for the ATHENA X-IFU instrument: impact on the instrumental design

2014 ◽  
Author(s):  
S. Lotti ◽  
C. Macculi ◽  
D. Cea ◽  
T. Mineo ◽  
E. Perinati ◽  
...  
Keyword(s):  
Instrument Impact

General budget support as an aid instrument-impact on economic growth

2018 ◽  
Vol 23 (1) ◽  
pp. 231-255 ◽  
Author(s):  
Kaisa Alavuotunki ◽  
Susanna Sandström
Keyword(s):  
Economic Growth ◽  
Budget Support ◽  
Instrument Impact

scholarly journals Full-azimuthal imaging-DOAS observations of NO<sub>2</sub> and O<sub>4</sub> during CINDI-2

2019 ◽  
Author(s):  
Enno Peters ◽  
Mareike Ostendorf ◽  
Tim Bösch ◽  
André Seyler ◽  
Anja Schönhardt ◽  
...  
Keyword(s):  
Temporal Variability ◽  
Trace Gas ◽  
Vertical Profiles ◽  
Azimuthal Distribution ◽  
Future Studies ◽  
Measurement Site ◽  
Short Time ◽  
Relative Differences ◽  
Instrument Impact

Abstract. A novel imaging-DOAS instrument (IMPACT) is presented combining full-azimuthal pointing (360°) with a large vertical coverage (~ 40°). Complete panoramic scans are acquired at a temporal resolution of ~ 15 minutes enabling the retrieval of NO2 vertical profiles over the entire panorama around the measurement site. IMPACT showed excellent agreement (correlation > 99 %) with coinciding MAX-DOAS measurements during the CINDI-2 campaign. The temporal variability of NO2 slant columns within a typical MAX-DOAS vertical scanning sequence could be resolved and was as large as 20 % in a case study under good viewing conditions. The variation of corresponding profiles and surface concentrations were even larger (40 %). This variability is missed when retrieving trace gas profiles based on standard MAX-DOAS measurements. The azimuthal distribution of NO2 around the measurement site showed inhomogeneities (relative differences) up to 120 % (on average 35 %) on short time scales (individual panoramic scans). This is more than expected taking into account the semi-rural location. One reason for this are transport events. Exploiting the instrument's advantages, the plume's trajectory during a prominent transport event could be reconstructed. Furthermore, the potential of retrieving information about the aerosol phase function from O4 slant columns along multiple almucantar scans of IMPACT is demonstrated, with promising results for future studies.

scholarly journals Full-azimuthal imaging-DOAS observations of NO<sub>2</sub> and O<sub>4</sub> during CINDI-2

2019 ◽  
Vol 12 (8) ◽  
pp. 4171-4190 ◽  
Author(s):  
Enno Peters ◽  
Mareike Ostendorf ◽  
Tim Bösch ◽  
André Seyler ◽  
Anja Schönhardt ◽  
...  
Keyword(s):  
Trace Gas ◽  
Optical Absorption Spectroscopy ◽  
Measuring Instruments ◽  
Azimuthal Distribution ◽  
Future Studies ◽  
Measurement Site ◽  
Atmospheric Observations ◽  
Relative Differences ◽  
Instrument Impact

Abstract. A novel imaging-DOAS (differential optical absorption spectroscopy) instrument IMPACT (Imaging MaPper for AtmospheriC observaTions) is presented combining full-azimuthal pointing (360∘) with a large vertical coverage (∼41∘). Complete panoramic scans are acquired at a temporal resolution of ∼15 min, enabling the retrieval of NO2 vertical profiles over the entire panorama around the measurement site. IMPACT showed excellent agreement (correlation >99 %) with coincident multiaxis DOAS (MAX-DOAS) measurements during the Second Cabauw Intercomparison of Nitrogen Dioxide measuring Instruments (CINDI-2) campaign. The temporal variability of NO2 slant columns within a typical MAX-DOAS vertical scanning sequence could be resolved and was as large as 20 % in a case study under good viewing conditions. The variation of corresponding profiles and surface concentrations was even larger (40 %). This variability is missed when retrieving trace gas profiles based on standard MAX-DOAS measurements. The azimuthal distribution of NO2 around the measurement site showed inhomogeneities (relative differences) up to 120 % (on average 35 %) on short timescales (individual panoramic scans). This is more than expected for the semirural location. We explain this behavior by the transport of pollution. Exploiting the instrument's advantages, the plume's trajectory during a prominent transport event could be reconstructed. Finally, the potential for retrieving information about the aerosol phase function from O4 slant columns along multiple almucantar scans of IMPACT is demonstrated, with promising results for future studies.

How Does A Structured Review Instrument Impact Learning at Resident Journal Club?

2019 ◽  
Vol 58 (5) ◽  
pp. 920-929
Author(s):  
Eric So ◽  
Christopher F. Hyer ◽  
Marcus Richardson ◽  
Melissa Younger ◽  
Donald S. Malay
Keyword(s):  
Journal Club ◽  
Instrument Impact
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