{'fraction_non_alphanumeric': 0.010067114093959731, 'fraction_numerical': 0.0, 'mean_word_length': 5.784090909090909, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Data Needs For Characterizing Winter Obscuration

The winter environment can produce obscuration effects which can severely degrade the effective operation of visible, infrared, and millimeter wave systems. The phenomena responsible for these effects can be classified into two main categories pertaining to the atmosphere and the terrain. This paper summarizes data needs for characterizing obscuration effects in winter and includes examples of some cold regions equipment for obtaining the data. The impact of various winter optical phenomena on multispectral systems performance is discussed.