Retrieving Water Vapor From an E-Band Microwave Link With an Empirical Model Not Requiring In Situ Calibration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00356349" target="_blank" >RIV/68407700:21110/21:00356349 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1029/2021EA001911" target="_blank" >https://doi.org/10.1029/2021EA001911</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2021EA001911" target="_blank" >10.1029/2021EA001911</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Retrieving Water Vapor From an E-Band Microwave Link With an Empirical Model Not Requiring In Situ Calibration

Popis výsledku v původním jazyce

An empirical model estimating water vapor density from the attenuation of electromagnetic waves at E-band frequencies is proposed and tested on seven months of 5-min attenuation observations from a 4.87-km-long full-duplex E-band commercial microwave link (CML) operating at 73.5 and 83.5 GHz. The model does not require in situ calibration. Estimated water vapor density is compared to the observations from two meteorological stations located nearby the CML end nodes. Best performance is achieved for the 83.5 GHz sublink (RMSE = 1.46 g m-3, R2 = 0.85) when the actual temperature is used as a model input, in addition to the attenuation data. Use of temperature averaged over the whole evaluation period resulted in significantly worse performance. The study demonstrates the potential of E-band CMLs for measuring near-surface air humidity and the need for careful quality control when upscaling the water vapor monitoring to the entire network of E-band CMLs.

Název v anglickém jazyce

Retrieving Water Vapor From an E-Band Microwave Link With an Empirical Model Not Requiring In Situ Calibration

Popis výsledku anglicky

An empirical model estimating water vapor density from the attenuation of electromagnetic waves at E-band frequencies is proposed and tested on seven months of 5-min attenuation observations from a 4.87-km-long full-duplex E-band commercial microwave link (CML) operating at 73.5 and 83.5 GHz. The model does not require in situ calibration. Estimated water vapor density is compared to the observations from two meteorological stations located nearby the CML end nodes. Best performance is achieved for the 83.5 GHz sublink (RMSE = 1.46 g m-3, R2 = 0.85) when the actual temperature is used as a model input, in addition to the attenuation data. Use of temperature averaged over the whole evaluation period resulted in significantly worse performance. The study demonstrates the potential of E-band CMLs for measuring near-surface air humidity and the need for careful quality control when upscaling the water vapor monitoring to the entire network of E-band CMLs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/GC20-14151J" target="_blank" >GC20-14151J: Plošné srážkové odhady kombinující pozorování z mikrovlnných spojů a statistickou asimilaci dat (SpraiLINK)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Earth and Space Science

ISSN

2333-5084

e-ISSN

2333-5084

Svazek periodika

8

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000722485800008

EID výsledku v databázi Scopus

2-s2.0-85119869134