دورية أكاديمية
Seasonal analysis of the atmosphere during five years by using microwave radiometry over a mid-latitude site
| العنوان: | Seasonal analysis of the atmosphere during five years by using microwave radiometry over a mid-latitude site |
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| المؤلفون: | BEDOYA-VELASQUEZ, ANDRES E., NAVAS-GUZMAN, FRANCISCO, MOREIRA, GREGORI de A., ROMAN, ROBERTO, CAZORLA, ALBERTO, ORTIZ-AMEZCUA, PABLO, BENAVENT-OLTRA, JOSE A., ALADOS-ARBOLEDAS, LUCAS, OLMO-REYES, FRANCISCO J., FOYO-MORENO, INMACULADA, MONTILLA-ROSERO, ELENA, HOYOS, CARLOS D., GUERRERO-RASCADO, JUAN L. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | microwave radiation, atmospheres, seasonal variations, remote sensing, thermodynamic properties, boundary layers, radiometers |
| الوصف: | This work focuses on the analysis of the seasonal cycle of temperature and relative humidity (RH) profiles and integrated water vapor (IWV) obtained from microwave radiometer (MWR) measurements over the mid-latitude city of Granada, southern Spain. For completeness the study, the maximum atmospheric boundary layer height (ABLHmax) is also included. To this end, we have firstly characterized the HATPRO-RPG MWR errors using 55 colocated radiosondes (RS) by means of the mean-bias (bias) profile and the standard deviation (SDbias) profile classified under all-weather conditions and cloud-free conditions. This characterization pointed out that temperature from HATPRO-MWR presents a very low bias respects RS mostly below 2.0 km agl, ranging from positive to negative values under all-weather conditions (from 1.7 to ???0.4 K with SDbias up to 3.0 K). Under cloud-free conditions, the bias was very similar to that found under allweather conditions (1.8 to ???0.4 K) but with smaller SDbias (up to 1.1 K). The same behavior is also seen in this lower part (ground to 2.0 km agl) for RH. Under all-weather conditions, the mean RH bias ranged from 3.0 to ???4.0% with SDbias between 10 and 16.3% while under cloud-free conditions the bias ranged from 2.0 to ???0.4% with SDbias from 0.5 to 13.3%. Above 2.0 km agl, the SDbias error increases considerably up to 4 km agl (up to ???20%), and then decreases slightly above 7.0 km agl (up to???5%). In addition, IWV values from MWR were also compared with the values obtained from the integration of RS profiles, showing a better linear fit under cloudfree conditions (R2=0.96) than under all-weather conditions (R2=0.82). The mean bias under cloud-free conditions was ???0.80 kg/m2 while for all-weather conditions it was ???1.25 kg/m2. Thus, the SDbiasfor all the statistics (temperature, RH and IWV) of the comparison between MWR and RS presented higher values for allweather conditions than for cloud-free conditions ones. It points out that the presence of clouds is a key factor to take into ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 78-89 |
| اللغة: | unknown |
| تدمد: | 0169-8095 |
| العلاقة: | Atmospheric Research; http://repositorio.ipen.br/handle/123456789/30029Test; 218; 86.559; 94.00 |
| DOI: | 10.1016/j.atmosres.2018.11.014 |
| الإتاحة: | https://doi.org/10.1016/j.atmosres.2018.11.014Test http://repositorio.ipen.br/handle/123456789/30029Test |
| حقوق: | openAccess |
| رقم الانضمام: | edsbas.B6EBC3D2 |
| قاعدة البيانات: | BASE |
| تدمد: | 01698095 |
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| DOI: | 10.1016/j.atmosres.2018.11.014 |