Mesoscale Convective Complex

INTRODUCTION From the evening of 27th June until the early morning of June 28th, New York and the area of ​​Pennsylvania suffered from floods due to heavy rain from the storm system. Rain in the past few days makes the ground wet, the river level is above normal ("flood"). This increases the risk of floods due to increased precipitation. Regions with the most 24-hour precipitation are Chenango County in the Northeastern New York State and North Wayne County in the State of Pennsylvania with precipitation of 50 to 5.00 inches and 50% respectively (June rainfall). 50 inches ")

Hydrodynamic physicists and radar experts in HRD participated in the preliminary STORM (pre_STORM) experiment in the spring of 1985. Predictability This experiment was designed to examine winter storms in the east coast of the United States, focusing on explosively developing storms. We also hope that from the value itself, we can provide new insights into hurricanes where knowledge gained from GALE is rapidly increasing.

The resulting satellite photograph clearly shows the active medium sized convection system (MCS) on the flight path. This is rapidly developing around 2300-0100 UTC. Approximately 90% of cloud material seen in close-up images is actually a large number of convective garbage fields and numerous cirrus clouds due to storms and activities that occurred during the day. An area of ​​active thunderstorms is actually defined by small mottled areas of cold clouds, not bright colors or cloud shields. It is compared with the structural map of similar tropical MCS in the same area in 1977. From the turbulent point of view, these cold spots are the most interesting areas because they show the location of an active ascending air stream that creates new cloud materials. Upper troposphere

Convective rain (or cumulonimbus or cumulus cloud) causes convective rain or shower rain. It decreases as intensity changes abruptly. Due to the limited range of convective clouds, convective precipitation falls into specific areas in a relatively short period of time. Although most of precipitation in the tropics seems to be convective, it is suggested that stratified precipitation also occurs.霰 and hail indicate convection. At mid-latitude, convective precipitation is intermittent and is usually associated with slope boundaries such as cold front, diagonal, warm front.