Query: "Cloud cover in models is poorly treated and inaccurately predicted.

Relevant passages:
Cloud <=SEP=> In meteorology , a cloud is an aerosol comprising a visible mass of minute liquid droplets , frozen crystals , or particles suspended in the atmosphere above the surface of a planetary body . The droplets and crystals may be made of water or various chemicals . On Earth , clouds are formed as a result of saturation of the air when it is cooled to its dew point , or when it gains sufficient moisture ( usually in the form of water vapor ) from an adjacent source to raise the dew point to the ambient temperature . They are seen in the Earth 's homosphere ( which includes the troposphere , stratosphere , and mesosphere ) . Nephology is the science of clouds which is undertaken in the cloud physics branch of meteorology .   There are two systems of naming clouds in their respective layers of the atmosphere ; Latin in the troposphere and mostly alpha-numeric above the troposphere . Cloud types in the troposphere , the atmospheric layer closest to Earth 's surface , have Latin names due to the universal adaptation of Luke Howard 's nomenclature . Formally proposed in 1802 , it became the basis of a modern international system that classifies clouds into five physical forms and three altitude levels ( formerly known as étages ) . These physical types , in approximate ascending order of convective activity , include stratiform sheets , cirriform wisps and patches , stratocumuliform layers ( mainly structured as rolls , ripples , and patches ) , cumuliform heaps , and very large cumulonimbiform heaps that often show complex structure . The physical forms are cross-classified by the altitude levels to produce ten basic genus-types , most of which can be divided into species , and subdivided into varieties .   Two cirriform clouds that form higher up in the stratosphere and mesosphere have common names for their main types , but are sub-classified alpha-numerically . They are relatively uncommon and are mostly seen in the polar regions of Earth . Clouds have been observed in the atmospheres of other planets and moons in the Solar System and beyond . However , due to their different temperature characteristics , they are often composed of other substances such as methane , ammonia , and sulfuric acid as well as water .   Homospheric types determined by cross-classification of forms and levels .   '' Homospheric types include the ten tropospheric genera and two additional major types above the troposphere . The cumulus genus includes three variants as defined by vertical size .

Situation awareness <=SEP=> Situational awareness or situation awareness ( SA ) is the perception of environmental elements and events with respect to time or space , the comprehension of their meaning , and the projection of their status after some variable has changed , such as time , or some other variable , such as a predetermined event . It is also a field of study concerned with understanding of the environment critical to decision-makers in complex , dynamic areas from aviation , air traffic control , ship navigation , power plant operations , military command and control , and emergency services such as fire fighting and policing ; to more ordinary but nevertheless complex tasks such as driving an automobile or riding a bicycle .   Situation awareness involves being aware of what is happening in the vicinity to understand how information , events , and one 's own actions will impact goals and objectives , both immediately and in the near future . One with an adept sense of situation awareness generally has a high degree of knowledge with respect to inputs and outputs of a system , an innate `` feel '' for situations , people , and events that play out because of variables the subject can control . Lacking or inadequate situation awareness has been identified as one of the primary factors in accidents attributed to human error . Thus , situation awareness is especially important in work evironments where the information flow can be quite high and poor decisions may lead to serious consequences ( such as piloting an airplane , functioning as a soldier , or treating critically ill or injured patients ) .   As outlined below , three facets of SA have been in focus in research , namely SA States , SA Systems , and SA processes . SA States refers to the actual awareness of the situation . SA Systems refers to the distribution of SA in teams and between objects in the environment , and to the exchange of SA between system parts . SA Processes refers to the updating of SA States , and what guides the moment-to-moment change of SA .   Having complete , accurate , and up-to-the-minute SA is essential where technological and situational complexity on the human decision-maker are a concern . Situation awareness has been recognized as a critical , yet often elusive , foundation for successful decision-making across a broad range of complex and dynamic systems , including aviation , air traffic control , ship navigation , health care , emergency response , military command and control operations , and offshore oil and nuclear power plant management .

Models of communication <=SEP=> Models of communication are conceptual models used to explain the human communication process . The first major model for communication came in 1948 by Claude Elwood Shannon and published with an introduction by Warren Weaver for Bell Laboratories . Following the basic concept , communication is the process of sending and receiving messages or transferring information from one part ( sender ) to another ( receiver ) .