def to_pascal(arr, is_dp=False):
    """Force data with units either hPa or Pa to be in Pa."""
    threshold = 400 if is_dp else 1200
    if np.max(np.abs(arr)) < threshold:
        warn_msg = "Conversion applied: hPa -> Pa to array: {}".format(arr)
        logging.debug(warn_msg)
        return arr*100.
    return arr
Force data with units either hPa or Pa to be in Pa.