Dear Aviral, thank you for your brief and correct answers. Since the first correct answers were submitted already 1.5 years ago, we probably need more questions to keep the interest of readers. Thanks, Vitaliy.

]]>long and touches the coast ]]>

Dear Janet, thank you for your helpful encouragement! Vitaliy.

]]>Q2: No narrow filament, so not atmospheric river

Q3 is definitely an atmospheric river, as it satisfies all conditions

– Long, narrow filament

– Carries water from mid-latitude to the coast ]]>

Dear Naheed, you are absolutely right. In the definition of a simplex the sum of the coordianates x_i should be exactly 1. Thank you for correcting this typo! Kind regards, Vitaliy.

]]>