def brier_skill_score_keras(obs, preds):
    climo = K.mean(((obs - K.mean(obs)) ** 2))
    bs = brier_score_keras(obs, preds)
    ratio = (bs / climo)
    return climo
def brier_skill_score_keras(obs, preds):
    climo = K.mean(((obs - K.mean(obs)) ** 2))
    bs = brier_score_keras(obs, preds)
    ratio = (bs / climo)
    return climo