A Climatology of Mesoscale Convective Systems in Northwest Mexico during the North American Monsoon

نویسندگان

چکیده

Mesoscale Convective Systems (MCS) may vary greatly with respect to their morphology, propagation mechanism, intensity, and under which synoptic-scale conditions as a function of topographic complexity. In this study, we develop long-term climatology MCS during the North American Monsoon focusing on lifecycle, intensity well possible mechanisms. We employ an tracking classification technique based 23 years (1995 2017) GOES IR satellite data. is also gauged 7 (2011 Vaisala GLD360 lightning data and, finally, monthly interannual variability in synoptic are examined ERA5 reanalysis Our results 1594 identified reveal that 98% morphologically classified Persistent Elongated Systems. During summers (June through September) observed, number varied considerably, averaging 70 minimum 41 maximum 94. typically have average duration around 8 h ± 2 standard deviation. Propagation speeds, estimated Hovmöller diagrams addition centroid initial final position, slightly depending trajectory. A notable result suggests speeds more consistent density currents or cold pools not gravity waves nor steering-level winds. The study could provide dataset for examining larger-scale controls frequency assesing convective parameterization convective-resolving models regions complex topography.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Convective Systems of the North Australian Monsoon

The climatology of convection over northern Australia and the surrounding oceans, based on six wet seasons (September–April), is derived from the Japanese Meteorological Agency Geostationary Meteorological Satellite-5 (GMS-5) IR1 channel for the years from 1995/96 to 2000/01. This is the first multiyear study of this kind. Clouds are identified at two cloud-top temperature thresholds: 235 and 2...

متن کامل

Polarimetric Radar Observations of Convection in Northwestern Mexico during the North American Monsoon Experiment

The spatial and temporal variability of convection during the North American Monsoon Experiment (NAME) was examined via analysis of three-dimensional polarimetric radar data. Terrain bands were defined as the Gulf of California (over water) and elevations of 0–500 m above mean sea level (MSL; coastal plain), 500–1500 m MSL, and .1500 m MSL. Convective rainfall over the Gulf typically featured t...

متن کامل

Analysis of the Mesoscale Convective Systems Characteristics in West of Iran Case Study: April 23, 2004

In Iran the issue of occurring natural disasters, particularly mesoscale convective systems. They are important on one hand, because of their increasing intimidations and causing damages and on the other hand, because of their increasing abundance, time of duration, and happening. Therefore life cycle, constituton condition and mesoscale convective systems features in west of Iran using satelli...

متن کامل

Sensitivity of the Modeled North American Monsoon Regional Climate to Convective Parameterization

This paper documents the sensitivity of the modeled evolution of the North American monsoon system (NAMS) to convective parameterization in terms of thermodynamic and circulation characteristics, stability profiles, and precipitation. The convective parameterization schemes (CPSs) of Betts–Miller–Janjic, Kain–Fritsch, and Grell were tested using version 3.4 of the PSU–NCAR fifth-generation Meso...

متن کامل

A Climatology of Midlatitude Mesoscale Convective Vortices in the Rapid Update Cycle

Climatological characteristics of mesoscale convective vortices (MCVs) occurring in the state of Oklahoma during the late spring and summer of four years are investigated. The MCV cases are selected based on vortex detection by an objective algorithm operating on analyses from the Rapid Update Cycle (RUC) model. Consistent with a previous study, true MCVs represent only about 20% of the mesosca...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Atmosphere

سال: 2022

ISSN: ['2073-4433']

DOI: https://doi.org/10.3390/atmos13050665