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instruments:tophat:tophat [2014/11/10 16:19] uliinstruments:tophat:tophat [2021/01/22 22:17] (current) – external edit 127.0.0.1
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 ====== HATPRO-TOPHAT ====== ====== HATPRO-TOPHAT ======
-//Mentor: [[http://www.geomet.uni-koeln.de/allgemein/das-institut/mitarbeiter/detailansicht/765f5471654dab859455771a5edcc310/?tx_wtdirectory_pi1[show]=193&tx_rggooglemap_pi1[poi]=193|C. Acquistapace]]//+//Mentor: [[http://www.geomet.uni-koeln.de/en/the-institute/rg-crewell/staff-crewell/acquistapace/|C. Acquistapace]]//
  
 ===== Principle ===== ===== Principle =====
  
-TOPHAT is a passive microwave radiometer installed at the Forschungszentrum Jülich as part of JOYCE. It measures brightness temperatures at 7 channels along the slope of the water vapor absorption line at 22 GHz and at 7 channels along the slope of the oxygen absorption complex at 60 GHz with allow the retreival of integrated water vapor (IWV),  +**TOPHAT** is a [[instruments:hatpro:hatpro|HATPRO]] passive microwave radiometer installed at the Forschungszentrum Jülich as part of [[sites:joyce|JOYCE]]. It measures brightness temperatures at 7 channels along the slope of the water vapor absorption line at 22 GHz and at 7 channels along the slope of the oxygen absorption complex at 60 GHz with allow the retreival of integrated water vapor (IWV),  
-cloud liquid water path (LWP) as well as tropospheric temperature profiles. Zenith measurements alternate with rhi and ppi scans. Scan patterns are partially synchronized with the neighbouring cloud radar MIRA. Additionally, regular elevation scans within provide high-quality temperature profiles in the boundary layer. Attached to the side, it also includes two broadband infrared pyrometers, sensitive to water vapor, low-LWP (< 50 gm<sup>-2</sup>) liquid clouds as well as ice clouds.+cloud liquid water path (LWP) as well as tropospheric temperature profiles. Zenith measurements alternate with rhi and ppi scans. Scan patterns are partially synchronized with the neighbouring cloud radar [[instruments:mira:mira|MIRA]]. Additionally, regular elevation scans within provide high-quality temperature profiles in the boundary layer. Attached to the side, it also includes two broadband infrared pyrometers, sensitive to water vapor, low-LWP (< 50 gm<sup>-2</sup>) liquid clouds as well as ice clouds.
  
 ===== Instrument ===== ===== Instrument =====
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 ===== Data ===== ===== Data =====
   * If you are interested in receiving data please contact: [[http://www.geomet.uni-koeln.de/allgemein/das-institut/mitarbeiter/detailansicht/f93e43fbbe15a16f8a85792ec07ed119/?tx_wtdirectory_pi1[show]=42&tx_rggooglemap_pi1[poi]=42|U. Löhnert]]   * If you are interested in receiving data please contact: [[http://www.geomet.uni-koeln.de/allgemein/das-institut/mitarbeiter/detailansicht/f93e43fbbe15a16f8a85792ec07ed119/?tx_wtdirectory_pi1[show]=42&tx_rggooglemap_pi1[poi]=42|U. Löhnert]]
-  * [[http://gop.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser4.html?site=JOYCE&date=-1&UpperLeft=Tophat_cili&UpperRight=Tophat_TB&LowerRight=Tophat_LWP-Scan&LowerLeft=Tophat_IWV-Scan|quicklook archive]] +  * [[http://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser4.html?site=JOYCE&date=-1&UpperLeft=Tophat_cili&UpperRight=Tophat_TB&LowerRight=Tophat_LWP-Scan&LowerLeft=Tophat_IWV-Scan|quicklook archive]] 
-  * RHUBC-II: [[:instruments:tophat:quicklooks_rhubc2|quicklooks]] or [[http://gop.meteo.uni-koeln.de/~hatpro/rhu/|quicklooks]]+  
-  * Current observations: +<html> 
-{{http://gop.meteo.uni-koeln.de/~hatpro/jue/IWV_LWP/latest_jue_l2a.png?nocache&w=600}}+      <a href="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/jue/tophat/l1/latest_jue_l1.png 
 +" target="_blank"> 
 +      <img src="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/jue/tophat/l1/latest_jue_l1.png 
 +" width=450> 
 +      </a> 
 +      <a href="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/jue/tophat/l2/latest_jue_l2a.png 
 +" target="_blank"> 
 +      <img src="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/jue/tophat/l2/latest_jue_l2a.png 
 +" width=450> 
 +      </a> 
 +</html>  
 + 
 +The left figure shows the 14 channel brightness temperatures plus relative humidity (RH, top row) and temperature (second row) of the environment. On the right figure, the Integrated Water Vapor (IWV, third row) and Liquid Water Path (LWP, last row) derived from TOPHAT brightness temperatures are displayed. 
 + 
 + * RHUBC-II: [[:instruments:tophat:quicklooks_rhubc2|quicklooks]] or [[http://atmos.meteo.uni-koeln.de/~hatpro/rhu/|quicklooks]]. 
  
 ===== History ==== ===== History ====
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 | Frequencies (R1) [GHz]             | 22.24, 23.04, 23.84, 25.44, 26.24, 27.84, 31.40 | | Frequencies (R1) [GHz]             | 22.24, 23.04, 23.84, 25.44, 26.24, 27.84, 31.40 |
 | Channel band-widths (R1)  [MHz]     | 230, 230, 230, 230, 230, 230, 230               | | Channel band-widths (R1)  [MHz]     | 230, 230, 230, 230, 230, 230, 230               |
-| Optical Resolution (R1) (HPBW)     | 3.3°-3.7°                                      +| Optical Resolution (R1) (HPBW)     | 3.3°-3.7°    
 +| Temporal Resolution                    | 1 to 2 seconds  |                                   
 | Receiver 2 (R2)               | oxygen absorption                               |   | Receiver 2 (R2)               | oxygen absorption                               |  
 | Frequencies (R2) [GHz]             | 51.26, 52.28, 53.86, 54.94, 56.66, 57.30, 58.00 | | Frequencies (R2) [GHz]             | 51.26, 52.28, 53.86, 54.94, 56.66, 57.30, 58.00 |
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 | Power Consumption             | <120 W (350 W peak) + dew blower 130 W          | | Power Consumption             | <120 W (350 W peak) + dew blower 130 W          |
 | Weight                        | 60 kg                                           | | Weight                        | 60 kg                                           |
-Manufactorer                         [[http://www.radiometer-physics.de/rpg/html/Home.html|RPG]]                                          |+Manufacturer                         [[http://www.radiometer-physics.de/rpg/html/Home.html|RPG]]                                          |
  
  
  
instruments/tophat/tophat.txt · Last modified: 2021/01/22 22:17 by 127.0.0.1